Classic Mini Engine: Identification Data

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How to Identify Your Classic Mini Engine

If you have the engine tag still attached to the engine - just in front/below the thermostat housing - or perhaps the original engine number in the log book then the following should help you determine which engine you have. For Metro units, see Engine - Metro Identification Data.

Other articles you might be interested in:

Classic Mini Identification: a comprehensive index of the years and models of the Classic Mini - click here
Guide: how to identify your Classic Mini by VIN or Chassis number - click here

Notes:

All engines prefixed with "GSE" or "RKM" were of UNIPART origin when British Leyland split its parts organization
"E" at the end of a part number denotes it is a reconditioned, service unit only (basic engine assembly with no ancillaries)
"N" at the end of a part number denotes a brand new unit

Original Engine Identification Numbers

850cc

8A	Austin up to 25000
8MB	Morris up to 25000
8AM	Austin & Morris 25000-onward
8AH	Austin & Morris Automatic
8AJ	Austin & closed-circuit breathing
8AK	Austin & Morris automatic with closed-circuit breathing
8WR	Wolseley Hornet & Riley Elf
8AC	Moke
85H/101	All variants 1969-onwards

Note: third suffix letter denotes compression type, L = Low, H = High, e.g. 8AM/U/H101 denotes high compression

↑ TOP ↑

998cc

9WR	Wolseley Hornet & Riley Elf Mk2, pre- closed circuit breathing
9AD	Austin, Wolseley Hornet & Riley Elf Mk2 with remote type gearbox and closed circuit breathing
9AE	Wolseley Hornet & Riley Elf Mk3
99H/-/101-on	Wolseley, Riley, Mini 1000, Clubman1000 1970-onward and Mk3 with dished piston
99H/791	Mini 1974-onward with dished piston
99H/997	1980-onward A+ block, flat top pistons, economy fitment with 2.95 final drive
99H/A97P	A+ block with dished pistons, pre-A+ gears, 3.44 final drive and 12-inch wheels

↑ TOP ↑

998cc A+ block with center locating tang in main cap, 1985-onward

Flat top piston with circlip wrist pin retention

99H/B81	Up to engine number 127431
99H/C20	Up to engine number 105023
99H/997	From engine number 127422 with 2.95 final drive
99H/A35P

Flat top piston with press fit wrist pin

99H/B81	From engine number 127432
99H/C20	From engine number 105024
99H/D80

Flat top pistons with press fit wrist pins, lead-free cylinder head

99H/G30 or G32 or G33

99H/F15 or F16

99H/E20 or E21

99H/D81

LBB10089

Dished pistons with circlip wrist pin retention

99H/B83P	Up to engine number 102908
99H/B84P	Up to engine number 100216

Dished pistons with press fit wrist pin

99H/B83P	From engine number 102909
99H/B84P	From engine number 100217

Dished pistons with press fit wrist pin, lead-free

99H/G31

99H/E22

LBB10175

↑ TOP ↑

1100cc (1098cc)

10AMW/Ta	Clubman Estate and Austin 110 (ADO16 shape)
10H791	Clubman Saloon (sedan)
10H/-/H	All Austin 1100 2- and 4-door derivative Saloons (ADO16 shape)
10GR/Ta/H	MG1100 (ADO16 shape)
10GRB/Ta/H	MG1100 & Wolseley 1100 (ADO16)
10V/Ta/H	Vanden Plas 1100 (ADO16 shape)

↑ TOP ↑

997 Cooper

9F/Sa/H101 to 2637 except 19201 to 20410 (became 1070S)

998 Cooper January 1964-onward

9FA/Sa/H	Mk1 Austin pre- closed circuit breathing
9FD/Sa/H	Mk1 Morris up to engine number 1934, all Austin Mk2 closed circuit breathing and Morris Mk2 from engine number 1935-33660 with closed circuit breathing
9FD/Xe/H	4-synchro gearbox introduced
99/-/H	Last of manufacture 1969

↑ TOP ↑

Cooper S Variants

970cc

9F/Sa/X	Engine numbers 29001-29003 with Tecalamit filter
9FD/Sa/X	Closed circuit breathing introduced with Tecalamit filter
9FE/Sa/X	Closed circuit breathing, oil filter with oil light switch introduced
9F/Sa/X	Engine numbers 29039-30029 Purolator oil filter with oil light switch and closed circuit breathing

↑ TOP ↑

1070cc

9F/Sa/H	Engine numbers 26501 to 33660 and 19201 to 20410
9FD/Sa/H	Engine numbers 33661 to 33948 with closed circuit breathing and oil light switch in oil filter head

1275cc

9F/Sa/Y	Engine numbers 31001 to 31504 pre closed circuit breathing with Purolator oil filter
9FD/Sa/Y	Closed circuit breathing with oil light switch on filter housing after engine number 32178
9FE/Sa/Y	Closed circuit breathing with oil light switch on Purolator filter housing and piston design change
9F/Sa/Y	From engine number 32378 onward, closed circuit breathing with Purolator filter with oil light switch, Aeg510 camshaft introduced at engine number 40006, cross-drilled EN40Bcrank at engine number 42730 and metal dipstick tube at engine number 42548-onward
12H397	Cooper S Mk3 with dynamo, negative earth and Tuiftrided EN16T crankshaft
12H398	Cooper S Mk3 with alternator, negative earth and Tuftrided EN16T crankshaft

Note: Only Cooper S engines with prefix '9F' had EN40B forged steel, nitrided crankshafts. All other A-series engines had EN16T steel crankshafts which were only Tuftrided on Mk3 'S' and Austin 1300GT (ADO16) and were stamped 12G1683

1275cc, solid wall block (no tappet chest covers)

12G/Ta/H	ADO17 shape Wolseley, Riley, MG & Vanden Plas fitted with S rods
12H379	1275GT with dynamo, negative earth, electric fuel pump and remote type gearbox
12H380	1275GT with alternator, negative earth, electric fuel pump and remote type gearbox
12H389	1275GT with dynamo, negative earth, mechanical fuel pump and remote type gearbox
12H390	1275GT with alternator, negative earth, mechanical fuel pump and remote type gearbox
12H706	1275GT with alternator, negative earth, mechanical fuel pump and rod change gearbox
12H397	Cooper S Mk3 with dynamo and negative earth
12H398	Cooper S Mk3 with alternator and negative earth
12H/-/	1275 Austin ADO16 & Allegro
12H610/635	Innocenti Mini with duplex cam drive gears and 11-stud head
12H719/832	Innocenti Mini with simplex cam drive gears and 11-stud head

1275cc, 1990-onwards (12A numbers)

12A/2A	Carburetor type
12A/2B	Carburrettor and catalyst type
12A/2D	SPi (Single-Point Injection // TBI = Throttle-Body Injection) with 9.4-1 CR
12A/E	SPi (TBi - throttle body injection) with 10-1 CR
With the following suffixes:
F75	9.4-1CR, SPi, 3.105 final drive, closed loop catalyst
F76	9.4-1CR, automatic with closed loop catalyst
F77	10.0-1CR, SPi Cooper, 3.2 final drive, closed loop catalyst
G01	10.0-1CR, 3.105 final drive, catalyst, no oil cooler
G03	9.4-1CR, 3.105 final drive, catalyst, May 1992 onward
G04	9.4CR, 2.76 final drive, catalyst, French only spec
G05	9.4-1CR, automatic with catalyst

↑ TOP ↑

Factory Replacement Engine Reference Numbers (i.e. New, and Gold and Silver Seal units)

8G28	850cc - Oil feed to primary gear type crank with 1.375" tail shaft
8G35	850cc - Deva bush conversion type crankshaft with 1.375" tail shaft
8G45	850cc - Gold Seal, 1.5" self-oiling primary gear/crankshaft type
GSE1101E	850cc - Gold Seal unit
RKM1101E	850cc - Silver Seal unit
BHM1307E	850cc - Gold Seal unit, 85H prefix replacement

8G18	997cc Cooper - Oil feed to primary gear type crankshaft
8G29	997cc Cooper - Deva bush type primary gear and crankshaft
8G36	997cc Cooper - Oil feed converted primary gear and crankshaft
8G33	998cc Cooper - Fitted with 28G193 (12G202) cylinder head
8G40	998cc Cooper - 28G222 (12G295) cylinder head introduced
8G42	998cc Cooper - Closed circuit breathing rocker cover and side plates
8G49	998cc Cooper - Purolator oil filter with oil light switch introduced
GSE1103E	998cc Cooper - Gold Seal unit, was RKM1120E Silver Seal
RKM1103E	998cc Cooper - Silver Seal unit
8G57	998cc - New from 1969 and exchange for all pre-A+ up to 1981
GSE1102E	998cc -Gold Seal unit, was RKM1119E Silver Seal unit, pre-A+ up to 1981
RKM1102E	998cc - Silver Seal unit, pre-A+ up to 1981
RKM1119E	998cc - Silver Seal unit, replaced by RKM1102E, pre-A+ up to 1981
BHM1232	998cc - Low-compression dished piston, CAM6267 camshaft, early cylinder head and crankshaft main bearings with side locator tang, A+
BHM1377	998cc - High-compression flat top piston, CAM4717 camshaft, early cylinder head and crankshaft main bearings with side locator tang, A+
BHM1458	998cc - Low compression piston, CAM6267 camshaft, late A+ cylinder head and crankshaft main bearings with central locator tang, A+
BHM1460	998cc - High-compression press-fit wrist pin piston, CAM4717 camshaft, late A+ cylinder head and crankshaft main bearings with central locator tang, A+
LBB10089	998cc - Low compression press-fit wrist pin piston, CAM6267 camshaft, lead-free late A+ cylinder head and crankshaft main bearings with central locator tang, A+

8G156E	1100cc - Clubman, Special and Austin 1100 (ADO16)
RKM1150E	1100cc - Silver Seal unit for Clubman and Special
RKM1151E	1100cc - Silver Seal unit for Clubman and Special
BHM1042	1100cc - New and Gold Seal units for Clubman and Special, 1974-1980
BHM1229	1100cc - New and Gold Seal units for Clubman and Special, A+ Block, 1980-on

8G38	970cc - Gold Seal unit, pre closed circuit breathing, Cooper S
8G41	970cc - Gold Seal unit with closed circuit breathing sideplates, Cooper S
8G46	970cc - Gold Seal unit withoil light switch in filter housing, Cooper S

8G133	1070cc - Gold Seal unit, pre closed circuit breathing, Cooper S
8G153	1070cc - Gold Seal unit with closed circuit breathing side plates, Cooper S

8G145	1275cc - Pre closed circuit breathing unit, Cooper S
8G154	1275cc - Closed circuit breathing side plates unit, Cooper S
8G155	1275cc - Oil filter housing with oil pressure light switch, Cooper S
8G174	1275cc - Fitted with AEG510 camshaft, Cooper S
38G464	1275cc - Introduced in 1970, most of which were fitted with EN16 Tuftrided crankshaft
8G200	1275cc - New and Gold Seal units Clubman 1275GT
38G527	1275cc - New and Gold Seal units for engine numbers prefixed 12H706, 12H707 & 12H831 for Clubman 1275GT
RKM1130E	1275cc - Silver seal unit, was RKM1112E, for Clubman 1275GT, pre-A+
RKM1152E	1275cc - Silver Seal unit for Clubman 1275GT, pre-A+
RKM1112E	1275cc - Silver Seal unit for Clubman 1275GT, pre-A+
BHM1220	1275cc - A+ unit for Clubman 1275GT
8G199E	1275cc - Gold Seal unit with Duplex cam drive gears for 1300GT (ADO16) and Innocenti 1300, 11-stud cylinder head
38G559E	1275cc - Gold Seal unit with Simplex cam drive gears for engine numbers prefixed 12H719 and 12H832, for 1300GT (ADO16) and Innocenti 1300, 11-stud cylinder head
GSE1109E	1275cc - Gold Seal unit for 1300GT (ADO16) and Innocenti 1300, 11-stud cylinder head
RKM1133E	1275cc - Silver Seal unit for 1300GT (ADO16) and Innocenti 1300, 11-stud cylinder head
BHM1209E	1275cc - Gold Seal unit, replaced all Innocenti 1300 engines from engine numbers prefixed 12H610, 12H635 and 12H832

↑ TOP ↑

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Have a Question or Comment of your own? Click here!

Question:

I have an A-series engine and "12 A 497" is hit on the block and just below "23 758 G". Does "12 A 497" mean that my engine is a 1275?

Answer:

Yes, for Minis,If the block tag starts with 12a it's a 1275cc

Mini Mania Tech Team

The Classic Mini Parts and Accessories Experts

Question:

998 Morris cooper looking to identity what number would be stamped on the crankshaft? Also did the last 998 coopers have 4 speed synchro box? ( 1964 model) TIA

Answer:

Hi,
Unfortunately, we do not have any crank casting numbers listed, only the minis. I think if it is a smoothcase, it will be a 3 sync box, if it is a ribcase, it should be a 4 sync box.
The English built 998 Cooper was made starting in '64 into '67 and never had a 4-syncro gearbox.

Question:

Hi From NZ, I have a Mini Motor with the engine plate reading 12H159A/H177400, Can you please advise what model this is, Thanks so much Cheers

Answer:

Hi ,

Here's a article with many of the engine numbers on it: https://www.minimania.com/Engine___Identification_Data_UPDATED

I believe yours is a 1275cc engine but originally from what I can't say. I don't see 12H159A on any list.

Thanks.

Question:

Hi, I've got an engine with the serial number 9FD-SA-H-35183. From your article I can see that the numbers from 33661 to 33948 are Cooper S 1070cc but I can't see any information for engine numbers higher than that. Any idea what it could be? Many thanks

Answer:

Thanks for contacting us. Yes, the list seems to be incomplete. You have a 998CC Cooper.

182 Comments

From:

Ralph MK3

Date:

04/17/2019 @ 1:26 AM

Comment:

I have an engine LBB 10473 100136. Anybody any clue what that is? Looks like A+ 1275.

From:

Cheleker

Date:

06/08/2017 @ 9:24 AM

Comment:

Steav1968. Correct regarding the head which would most likely make the engine a 1275. The big bore engine heads, like yours, can be made to fit on a small bore engine (848, 997, 998, 1098) but it is seldom done. As to what type of 1275 I can't help further. If you are sure the engine and gearbox are original together then the type of shift mechanism can help with an answer. As for the block stamping, I don't have any listings. You could try posting on the Mini Mania Forum. Someone there may recognize it.

From:

Steav1968

Date:

06/08/2017 @ 2:45 AM

Comment:

Hello there, Trying to identify my engine but is has no ID tag. Stamped into the block is C10B6 and the cylinder head casting number is 12G1316 which I believe is an Austin America emissions head? Any help would be appreciated, thanks.

From:

Cheleker

Date:

10/17/2016 @ 8:24 AM

Comment:

miniacs, Correct on the gearbox. It should be a remote shift, not rod change. The engine could be OK. 354 would be: mechanical fuel pump, negative ground, matched to a remote gearbox. It would also have an alternator. They didn't come in until 1973, but likely earlier on the Canadian cars...and the V tells me the engine is Canadian. What you need to do is get a Heritage certificate for the car's Chassis number and see if the engine number matches the 1287.

From:

[email protected]

Date:

10/16/2016 @ 10:07 PM

Comment:

I have a 1972 canadian mini with 1275 twin carb set up. The car came with a second 1000 motor and gearbox. I am told it is the original motor but I am not sure. The spare gearbox for sure is wrong since it is a rod type. Spare engine number is 99H354V H1287 I can't find it on any of the lists. Anyone know? Thanks in advance.

From:

Cheleker

Date:

10/09/2016 @ 4:36 PM

Comment:

Mgbsrh, Built IN 1985 or later.

From:

[email protected]

Date:

10/09/2016 @ 3:34 PM

Comment:

99h997p 132045 according to the chart this is an a+ engine built after 1985. Is that correct?

From:

Cheleker

Date:

04/04/2016 @ 8:15 AM

Comment:

Redcooper, A factory rebuilt engine, but one of many not on our list. A quick Internet search didn't turn up anything, either. Do some more searching, and you might try posting your question on Mini related Forums like the Mini Mania one. You might get lucky.

From:

Cheleker

Date:

04/03/2016 @ 9:01 PM

Comment:

Vanessa, Not like any Mini engine number I've ever seen.

From:

Vanessa

Date:

04/03/2016 @ 6:42 PM

Comment:

Engine number 1000 2831 ??? 1098cc?? Out of Leyland Van.

From:

Redcooper

Date:

04/03/2016 @ 12:10 AM

Comment:

Hello,

Ysterday cleaning a garage we found a Engine with the following Nr.RKM 1115 ....the rest is not readable. Cannot find any infos with this Nr. and we looked more then one time if the Nr is correct. Any Info would be nice - contact me pls rat [email protected] - thx alot

Greetings Redcooper

From:

Cheleker

Date:

03/28/2016 @ 8:06 AM

Comment:

Already responded in article, Mini Identification: Identifying Minis by Engine/Power Unit

From:

Brianmeg

Date:

03/27/2016 @ 1:00 AM

Comment:

I have just been given a mini engine with no engine number i would like know what it is can you help no on head is 126s40.019 block no reads 12g1279 thank you

From:

Cheleker

Date:

03/07/2016 @ 9:24 AM

Comment:

NR, The engine number is incorrect. It should be 99H, not 994. Information on that engine with the change made is in the article.

From:

Date:

03/06/2016 @ 11:34 PM

Comment:

Hi Can you please help identify specific model : VIN Chassis : XL23ZN-471637A ENgine : 994791P-277203

Thanks

From:

Cheleker

Date:

09/24/2015 @ 8:42 PM

Comment:

veggivet, The beginning "12" would lead one to think that the engine is a 1275, and may be, but no Minis were being made in the mid to late 80's with 1275cc engines and the full number form does not fit Mini (or Metro) engines.

From:

veggivet

Date:

09/24/2015 @ 5:18 AM

Comment:

Found this engine tag hiding behind the alternator:

124907AA007162

Any help much appreciated in confirming this as a 1275 from the mid to late 80's...

From:

Cheleker

Date:

09/14/2015 @ 8:57 AM

Comment:

Jem, the -G03 sounds like the correct engine number for your car. I'm not familiar with the -J21. You might try posting this good question on the Mini Mania web site.

From:

Cheleker

Date:

09/13/2015 @ 7:58 PM

Comment:

Nor, Although 12G940 heads can be made to fit 998cc Mini engines, it is rarely done. The head indicates the engine is a 1275cc. See also: http://www.minimania.com/Mini_Identification__Identifying_Minis_by_Engine-Power_Unit

From:

Cheleker

Date:

09/13/2015 @ 7:55 PM

Comment:

V, there were no factory built Minis with 1275cc engines in the mid to late '80s with the exception of the rare ERA Turbo. Metro 1275cc engines were sometimes put in Minis by owners. Not enough information to help you figure out what engine you have. Try: http://www.minimania.com/Mini_Identification__Identifying_Minis_by_Engine-Power_Unit

From:

Noriskbrian

Date:

09/13/2015 @ 1:24 PM

Comment:

I have been given a mini engine I need to adentifie what it is engine number missing.head number is 12g940 engine block numbers are on time cover side is stamped 100 on cluch side numbers stamp are look like 1120 under that is 1279 doses enyone know what it is.

From:

JemH

Date:

09/13/2015 @ 11:43 AM

Comment:

Can anyone help identify the following mini engine please? 12A2BJ21......(Found in a '93 Mini Sprite but V5 shows different number - 12A2BG03.....) Thanks, Jem

From:

Veggivet

Date:

09/12/2015 @ 10:18 PM

Comment:

No tag on this engine...but it has the numbers 4899408 stamped on the block. Pretty sure this is a 1275cc engine from the mid to late 80's ('87 maybe?) made for the Japanese market. Just confirming engine ID before I add an Eaton M45 supecharger....many thanks!

From:

Costas

Date:

08/28/2015 @ 2:25 AM

Comment:

Many thanks for kindly providing the information. Best

From:

Cheleker

Date:

08/27/2015 @ 8:06 AM

Comment:

Costas, Any Mini engine will run on unleaded fuel, and running an engine with a head not made for unleaded will wear it down faster than if the head was made for unleaded, but depending upon how hard you run the Moke and how often, the head could survive for years before needing to be rebuilt.

I don't have any information on the 99HB88 engines, but if the engine was built in 1989 there is a good chance that the head is unleaded...but no certainty on my part! I suggest you post your question before bigger audiences than here. Try Mini Mania's Forum and other Mini Forums; including, http://www.mokeclub.org/

If you want to be very cautious, you can remove the head and have the proper exhaust valve seats installed, or find a "lead additive" (I'd recommend Red Line) to be used each time you fill the tank.

From:

Costas.

Date:

08/27/2015 @ 12:54 AM

Comment:

Hi Gents. I have a 1989 Mini Moke. Engine number is 99HB8839100889. Please advise if possible whether this engine will run on unleaded or not. Will appreciate your response. kind regards

From:

Cheleker

Date:

08/20/2015 @ 9:05 AM

Comment:

The number is not valid for any Mini I am aware of. If the number is stamped directly into the block instead of on a tag it is possible those are code numbers used by a company that did a rebuild on the engine. You might try posting your question on the Mini Mania Forum. Someone there might recognize the numbers. I don't.

From:

Ray

Date:

08/19/2015 @ 6:10 AM

Comment:

Hi, I have, what I believe is a Mini Engine but the number on it is 1009/2169 that is all nothing else. Can you advise what it would be out of?

From:

Cheleker

Date:

07/19/2015 @ 6:15 PM

Comment:

brianmeg. Sorry. Can't understand the question.

From:

Brianmeg

Date:

07/18/2015 @ 9:05 AM

Comment:

i could you please tell me if this engine I have purchase on eBay is what it says Downton I no by the engine number it clubman.number on head is 12g202 witch is of cooper 997 stamp on head are no 2656. 55.24.2 witch I believe Downton as but on.piston are stamp stdm witch is standard is this Downton engine.thank you

From:

Mk1mini

Date:

06/09/2015 @ 8:52 AM

Comment:

Ok thanks for your help.

From:

Cheleker

Date:

06/09/2015 @ 7:52 AM

Comment:

Mk1mini, Along with the listing above of replacement engines, I've collected around 20 more numbers...and yours is not one of them. You might contact British Motor Industry Heritage Trust.

From:

Mk1mini

Date:

06/09/2015 @ 5:52 AM

Comment:

My chassis plate reads M/A2S4 500216M if that helps. Thanks. I'm just trying to get some informations rom heritage so I can put back together original as can be. Thanks

From:

Mk1mini

Date:

06/09/2015 @ 5:48 AM

Comment:

Hi I have engine plate that's RKM1118E 84695, I know that's RKM is a recon but can you help with the rest. It's in my mk1 1967

From:

Cheleker

Date:

06/02/2015 @ 8:48 AM

Comment:

The chassis number is correct for a 1098cc engined '79 Mini Special. The engine number is from a 998cc engine. Either the engine has been changed or either (or both) of the numbers (chassis and engine) have been changed.

From:

Erez

Date:

06/02/2015 @ 4:33 AM

Comment:

I have difficulties to identify mu Mini engine. The model is a 1979 Mini Special with VIN XC2S1N1121191B The engine number is 99H0208 08059. the registration paper indicates it is a 1,083cc engine? On the other hand from what I read, I see that the 1979 Mini Special was installed with a 1,098cc(?) engine...but all 99H engines are 998cc engines. Any assistance / additional info would be highly appreciated.

From:

Cheleker

Date:

05/26/2015 @ 8:47 PM

Comment:

Rowley, Not that the article deals only with Minis. I suggest you write Mini Mania at [email protected] if you want Sprite information.

From:

Rowley

Date:

05/26/2015 @ 12:01 PM

Comment:

Hi! Please would you comment. AH Sprite with the engine number: 8MUH1287344. It's got front discs and some pollution stuff. Could you tell me capacity and maybe age. Where? Zimbabwe! ThanksLUMZZ

From:

Cheleker

Date:

04/28/2015 @ 9:25 AM

Comment:

John, The 12H makes it a 1275cc horizontal engine, but you won't find it in Mini or Metro listings. The 298F with the 12H says it is from one of the dual carb ADO16 cars; such as, the MG1300.

From:

John

Date:

04/28/2015 @ 6:24 AM

Comment:

Can you please help identify this motor 12H/298F/17466

From:

Cheleker

Date:

04/19/2015 @ 8:25 PM

Comment:

Some information is available in the article. It's a 998cc A+ series Mini engine. As to a specific build year, I can't help you.

From:

Carolann

Date:

04/18/2015 @ 9:43 AM

Comment:

Please can you help identify the year and what this engine was fitted into: 99HB81P170954. Thanks Carolann.

From:

winabbey

Date:

02/26/2015 @ 5:50 PM

Comment:

I'm trying to identify the meaning of the second prefix group coding in the 800 and 900 range for 99H and 12H power units made for the Australian market. To date British Motor Heritage and other likely sources have not been able to help.

Do you have any records that can decipher the following coding after the 99H and 12H codes?

99H860AJH, 99H889AH, 99H905AJH, 99H905AJX and 12H902ASZ.

It is believed the codes relate to engine emission control requirements for Australia. Any help or suggestions on who can answer this would be very much appreciated. BMC and Leyland Australia factory records were lost when the companies wound up in the mid-1980's.

From:

Cheleker

Date:

02/11/2015 @ 8:37 PM

Comment:

bugeye, Not a Mini engine, but from one of the cousin AD16s; such as Austin, Morris, etc. 1300.

From:

bugeye

Date:

02/11/2015 @ 9:59 AM

Comment:

Hello I have an engine and the number on the metal tag reads 12H-157-H6724 the raised numbers low down on the side of the block read 12G 1279. This is a 1979 Austin \mini probably Canadian since it has the heater fan in the engine compartment

From:

Cheleker

Date:

01/26/2015 @ 9:15 AM

Comment:

I'm not aware of any Mini or Metro engines with a 12Y prefix. The only thing close would be 12V, but they were in the Sprites/Midgets. A Sprite/Midget block could be modified to use in a Mini, but it is VERY uncommon for that to happen.

You might do some Internet searching for 12YTAH to see if something turns up.

From:

Adam

Date:

01/25/2015 @ 8:39 PM

Comment:

I have an engine number that isnt in your list. Could you help me out. It is 12YTaH2007. Thanks in advance.

From:

Tribilin

Date:

12/30/2014 @ 12:46 PM

Comment:

Sorry I butcher your name cheleker

From:

Cheleker

Date:

12/30/2014 @ 10:20 AM

Comment:

Photos received. I'll take a look at them.

From:

Tribilin

Date:

12/29/2014 @ 4:20 PM

Comment:

Cheerier I email you some photos of my motor please let me know what you think thx

From:

Cheleker

Date:

12/25/2014 @ 8:37 PM

Comment:

Tribilin, Unless you have one of the few Innocenti Italian made Minis there were no Cooper versions being made in 1971. The Cooper model was discontinued in 1969 and didn't appear again until 1990. If you send a couple of engine photos to [email protected] I may be able to help identify the engine.

From:

Tribilin

Date:

12/25/2014 @ 4:04 PM

Comment:

Hi all I'm restoring a 1971 Mini Cooper 1000 with a 998cc motor made by BMC The engine identification tag is missing. Is there why other way to identified my engine?

From:

Cheleker

Date:

11/17/2014 @ 8:56 AM

Comment:

998cc, mechanical fuel pump, generator (not alternator), negative ground, remote shift (not rod change), 4-synchro.

From:

Kiwimk3

Date:

11/17/2014 @ 12:59 AM

Comment:

So I have a tag with 99H353E-HI694II....car is a 1971 New Zealand build Mini 1000?? Thanks in advance

From:

Kostas

Date:

11/11/2014 @ 5:38 AM

Comment:

I would like to thank you a lot...!!! your information was very helpful to me....very important !!! THANK YOU also for yor fast answer and keep the good work you r doing !!! ;-)

From:

Cheleker

Date:

11/10/2014 @ 8:40 PM

Comment:

Kostas, You can't find that number in a listing of English built cars because that is a number for an Italian Innocenti Mini. My records aren't complete, but what I have for a B38/1 is that it would be a Innocenti Mini Minor 850. The build number, 364699 would make it a Mk I version built between September 1965 and September 1968 -- probably in 1967.

From:

Kostas

Date:

11/10/2014 @ 8:56 AM

Comment:

The number is B38/1 364699 IGM43020....please help

From:

Kostas

Date:

11/10/2014 @ 8:54 AM

Comment:

Hello...looking for somebody's help.....i only found that number in the chassis of my car....does anybody know what exactly means....i mean details like model,year e.t.c Thanx

From:

Niclas Ramström

Date:

11/01/2014 @ 1:29 AM

Comment:

Ok, thanks! Strange... I saw earlier in this discussioan a guy called Flodin (maybe also Swedish?), who had almost the same number. Only the last four figures were different. Would be interesting to know what car he has!

Regards Niclas

From:

Cheleker

Date:

10/31/2014 @ 8:03 AM

Comment:

I don't have any records for English made engines (for Minis or Metros) that use the number 99H889. If it is valid, it would likely be a mid-80s engine. The 99H (998cc) is correct for your car, but other than that I can't help you.

From:

Niclas Ramström

Date:

10/30/2014 @ 2:38 PM

Comment:

Hi! I have a java green Mini 1000 -78, sold new in Sweden. VIN XL2S1N-556331A. My question is, because I need to know, is my engine (99H889AJH-004548) the original? The foreign owner said it was not, so then I wonder how, most likely, the original serial number for the engine should look like? And my other question is, what do I have in my car now? Regards Niclas Ramström, Sweden

From:

Cheleker

Date:

10/17/2014 @ 8:32 AM

Comment:

No. Most likely a late 70s engine from a Canadian car. For sure it can't be one from before 1973.

From:

TOMMYBOY

Date:

10/17/2014 @ 7:30 AM

Comment:

I have a early '71 mini 1000 with engine # 99H834V-H5427 Can this be original ? Thanks, Doug

From:

Cheleker

Date:

10/16/2014 @ 7:50 AM

Comment:

Ross, 8AM is certainly a number for an 848cc engine. The number plate (if still fitted) should be on a horizontal, flat surface just below the #1 spark plug. You can also check the backside of the block (side towards the firewall) towards the radiator end. Look for a casting number "850" or a metal plate with that number.

From:

Ross

Date:

10/16/2014 @ 1:47 AM

Comment:

Can you help I have a v5 which claims to be an Austin Mini 1968 mk2 998cc Engine. The Number is 8AMTAH6396 but I don't know if im being really stupid or not but I cant find that anywhere? So I presume this is an 850 not 998 as docs say. Help would be great.

Thanks Ross

From:

Cheleker

Date:

09/22/2014 @ 10:36 AM

Comment:

12H = 1275, transverse engine, but 009 doesn't fit for any Mini that I'm aware of.

From:

Jono

Date:

09/20/2014 @ 11:46 AM

Comment:

I have an engine no of 12H009 150114 any info would be grateful

From:

Cheleker

Date:

09/16/2014 @ 8:43 AM

Comment:

Not a factory number that I recognize.

From:

sageor

Date:

09/16/2014 @ 12:41 AM

Comment:

can you help me with a serial number of an engine DSNI2-0003

From:

Cheleker

Date:

09/11/2014 @ 8:53 PM

Comment:

You are correct; however, until you have taken the engine apart, you will not know for certain what is in it. It's possible it has been rebuilt before with changes made. The majority of the 998 engine parts were all the same so you won't find many differences between engines. And there is no reason you can't make changes when you rebuild the engine; such as, different cam, different pistons, etc.

From:

SoCalMini

Date:

09/11/2014 @ 12:03 PM

Comment:

Hi Everyone,

I just picked up a 1974 Mini1000. It's believed that the engine is NOT original but it is a 998cc replacement. Because it's not fully working properly I'd like to identify it so I can rebuild it properly.

The number I have on it is :99H159A-H9186

After reading the list above am I correct in guessing that it's this one: 99H/-/101 on Wolseley, Riley, Mini 1000, Clubman1000 1970 onwards and Mk3 with dished piston

Anything else I need to know about it?

Thanks Much.

From:

Cheleker

Date:

09/02/2014 @ 9:22 PM

Comment:

Mayfair was an English built model, not one made in South Africa. And they were not made until long after 1967. Regardless, both of those numbers are not standard numbers for English Minis. They are not going to be any help identifying your car.

From:

Billy

Date:

09/02/2014 @ 9:09 AM

Comment:

Hi Cheleker I have spoken to Ryno but he cant add any inforation .On my Vehicle registration they state the Manufacturer model derivative as being a Mayfair could this be why we have the JE and JC numbers .What was a Mayfai

From:

Cheleker

Date:

08/25/2014 @ 7:54 AM

Comment:

The numbers are not familiar for any Minis I know; including, South African Minis. You could contact Ryno Verster, author of THE book on South African Minis to see if he can help. [email protected]

From:

Billy

Date:

08/25/2014 @ 5:01 AM

Comment:

hi I have an Austin Mini 1967 with a very strange Engine No JC 7083 and Body No JC 7083 could you give me any information on these no's this vichile is in South Africa . Thank You

From:

Cheleker

Date:

08/24/2014 @ 8:59 PM

Comment:

I can only answer for the 12G295's use in the transverse engine cars. The MG1100 used it but not until October 1962. And the 2nd version of the Mini Cooper used it with the 998cc engine starting in January 1964.

From:

Jan C

Date:

08/24/2014 @ 10:58 AM

Comment:

Hi I have a big problem. I´m racing with a A40 Farina mk1 in "Tusencupen" in Sweden. I have a 12G295 head and now RHK says it´s not period E (up to 31/12 1961) Is there any documents showing that this head was used before this date?

Regards Jan Christians Torsang Sweden

From:

Cheleker

Date:

07/25/2014 @ 2:53 PM

Comment:

Lawrence. The number is from a Cooper S, but the solid wall block isn't. The "F" indicates dual carbs.

From:

Lawrence

Date:

06/20/2014 @ 10:55 AM

Comment:

Sorry, the engine number at the end should read /53505

Thank you

From:

Lawrence

Date:

06/20/2014 @ 10:38 AM

Comment:

Hi Guy's I have the following engine number 12H/398F/535 the block is solid wall. Can anyone tell me if this is a Cooper S engine please, also what does the "F" after the 398 stand for.

Thank you.

From:

Cheleker

Date:

06/18/2014 @ 8:20 AM

Comment:

970 and 1071 were big bore engines and made for the Cooper S only.

All 1275s are big bore engines. They were made for the Cooper S and non-Cooper S.

From:

mercer

Date:

06/18/2014 @ 3:43 AM

Comment:

could you tell me witch one of the big boro engines were S Iknow 970-1071-1275 were eny more thank you

From:

Cheleker

Date:

06/01/2014 @ 7:52 PM

Comment:

NickD, Familiar? No. Not to me.

From:

Peter

Date:

05/30/2014 @ 1:23 AM

Comment:

First time Ive seen this site you people have a lot of interesting issues and a man who goes out of his way to help everyone, Theres a lot of could be would bes in Australia and we had a lot of different engines hit our shores from South Africa and the Mother country,its hard to advise people what BMC/Leyland used on any one Mini as they used up all spares here, we had MK11 Cooper S with left over MK1 MK11 with 1100S 1275 and so on in the last of the GT Clubmans, Too many Visard readers here, Keep up the good work Regards Peter

From:

NickD

Date:

05/29/2014 @ 4:25 PM

Comment:

Hi, is the engine number 12h/199/123 familiar? Cheers. Nick

From:

Cheleker

Date:

05/22/2014 @ 7:53 AM

Comment:

Couldn't find convincing information on a 905AJ even with a web search. It is talked about on a Moke forum but only with differing opions.

From:

Asloyal

Date:

05/22/2014 @ 1:02 AM

Comment:

Hy guys, can anyone help me identify my engine, it's 99H905AJH003723

From:

Cheleker

Date:

05/19/2014 @ 9:15 AM

Comment:

Correct. Could be 1973 to 1980.

From:

Robbo

Date:

05/19/2014 @ 8:46 AM

Comment:

My engine number starts 99H702E, i believe its a 998 mini a series pre verto? Could you identify it from that? Can't find an exact match for the numbers. Cheers

From:

Cheleker

Date:

05/18/2014 @ 9:14 PM

Comment:

Web searches for MG1100s should turn up a lot of information. Here's a good start: http://www.bmc1100.co.uk/

From:

SkovGuy

Date:

05/16/2014 @ 6:52 PM

Comment:

So I am probably the newest member to the mini gang here, just purchased a barely original 1967 Morris Mini with cooper badges but I know the only cooper about it are these badges. Anyway my engine has 10GR-TA-H18188 on the engine plate, which I guess is a "10GR/Ta/H MG1100 (ADO16 shape)" Where do I take this info and find more information? Just learning about this car, trying to get it working and making it my daily driver and any help would be great.

Thanks in advance

From:

Cheleker

Date:

05/06/2014 @ 8:48 PM

Comment:

12H832X probably Innocenti 12H694AA probably A+ Allegro 99H353E early Mk III 998. Before 1973.

From:

filip

Date:

05/06/2014 @ 12:40 PM

Comment:

Hi,recently I have picked up a few engines but d'ont know their origine. Please help. 12H832X H 033518,12H694AA 056143,99H353E H 16138 THX!

From:

mogginsct

Date:

04/29/2014 @ 6:21 AM

Comment:

Thanks for your help 12A it is x

From:

Cheleker

Date:

04/28/2014 @ 8:48 PM

Comment:

The factory "Italian Job" Minis used a 1275cc engine. I can't say if the 12A engine you have is the original engine, but the 99H (a 998cc engine) wouldn't be correct.

From:

Mogginsct

Date:

04/28/2014 @ 11:15 AM

Comment:

Hi I wonder if you can Identify these engine number as I would like to put the better one back into my Italian job mini, 1st number is 99HB81P 130478 and the other is 12A2BC03 260195 any info on these engine would be appreciated.

From:

Cheleker

Date:

04/27/2014 @ 9:09 PM

Comment:

12E.12A497 doesn't look like any Mini engine number I'm familiar with.

From:

Kentweii

Date:

04/25/2014 @ 9:26 AM

Comment:

My mini cooper engine number is 12E. 12A497 Can you tell me what engine it is? Thx you:)

From:

Cheleker

Date:

03/30/2014 @ 5:19 PM

Comment:

B38/1 would be a Mini Minor 850 built between Sep 1965 and Sep 1968. The rest of the number looks one number too long.

The B38/1 Inno Minis were built with 848cc engines.

As long as you have the paperwork to show that the car is at least 25 years old, and if the numbers on the paperwork match the numbers on the car, you should not have any problems with U.S. Customs.

From:

James

Date:

03/29/2014 @ 7:20 AM

Comment:

Just verified again, no serial plate on engine. I can tell its a 850 by the cylinder head, but as far as knowing if its the original engine..no idea!!!..On another note has anyone shipped a mini from Europe to the states?..reason asking, I am in Italy right now and the Italians that help us(Military) ship our cars tell me that our US customs have been seizing cars for non compliant serials.ie: the chassis/ engine matching for the year the vehicle was manufactured. So you see where my urge to find this out comes from, I know its a 850, pretty sure its the factory engine too but if customs doesn't see any proof its not going to be a good day. The gentlemen I purchased the car from has given me all the necessary paperwork for the car, he is actually a vintage car collector in Modena, Italy. I hoping this works out, any info or help would be greatly appreciated. Thank you

From:

James

Date:

03/29/2014 @ 6:49 AM

Comment:

I have a 68'Innocenti Mini Minor, I don't have a engine plate on it. I'm pretty sure its a 850. Would anyone by chance know the engine serials for this year. I have the following serial off the fenderwell- B381 373962. Thank you

From:

Cheleker

Date:

03/17/2014 @ 8:30 AM

Comment:

No such thing as an "i 99" engine. The 99HF1 is not one I can find. 99HF15 and -16 are listed in the article, and based on your car being a 1989 your number is close to one of those. Sorry I cant be more help.

From:

Mt t

Date:

03/16/2014 @ 8:19 AM

Comment:

Helo all! : need to find out what engine my 1989 rover mini has number i 99hf 100595 thank you

From:

Cheleker

Date:

03/06/2014 @ 8:50 PM

Comment:

Andy, Not a Cooper. And I don't see that sequence listed for any 998cc Minis or Metros.

From:

Cheleker

Date:

03/05/2014 @ 8:17 PM

Comment:

9F/Xe/Y is a valid prefix for later 1275 Cooper S Minis, but the build numbers started at 51501. The chassis number you list doesn't fit anything I'm aware of.

From:

jetman007

Date:

03/05/2014 @ 1:18 PM

Comment:

Hi there does 9FX?y5313 mean anything. Sources tell me could be early cooper s.

From:

Cheleker

Date:

02/28/2014 @ 8:04 AM

Comment:

Engine numbers don't have dates built into them, and I've never seen a listing of build dates for engines by engine numbers. Engine numbers are related to car build dates but not exactly. If you can find others who know when their car was built and with the same engine prefix and similar build numbers you can get reasonably close to an engine build date. For now, about all one can tell (from this article)is that the engine was likely in a Mini built between May 1992 and September 1996 when the last of the carb cars was built.

From:

claudia

Date:

02/28/2014 @ 3:33 AM

Comment:

Sorry for the typo, Engine # 12A2BG03240709.If anyone can help with dating the engine I would greatly appreciate it.I'm looking to export.

From:

Claudia

Date:

02/28/2014 @ 2:37 AM

Comment:

I'm looking to date an engine. #12A2BG0340709. Can anyone tell me what year this was manufactured? or at least where to look.

From:

Cheleker

Date:

02/06/2014 @ 9:21 PM

Comment:

It is not a Cooper. The only 99H Cooper numbers used (March 69 +) were 99H377 and -378. Are you sure about the 83R? I do not find that listing. Might the R be a third number in a row?

From:

Cheleker

Date:

02/06/2014 @ 9:04 PM

Comment:

charlie, 99H explained in the article. 702e would make it a 73 throiugh 79 most likely. Are you sure about the "hh". Never seen that before. A single H would mean high compression, which was really the normal standard.

From:

Andy

Date:

02/05/2014 @ 1:36 PM

Comment:

Hi have engine no. 99h83rh115148 do you know what it would have been in ,I have been told maybe a 69 cooper

From:

Charliehotel07

Date:

02/05/2014 @ 1:14 AM

Comment:

99h702e -hh77236 I have this engine in my mini and need to know what one it is Can you help me please? What's it likly to have come out from? Thanks guys

From:

Chuck

Date:

01/23/2014 @ 5:26 AM

Comment:

Thanks, will do!

From:

Cheleker

Date:

01/22/2014 @ 8:21 PM

Comment:

It's a factory replacement engine, but I've not seen that number before and can not tell what size it is. The 8G prefix was used on most Mini engine sizes. If you send a couple of good photos of the engine to [email protected], they should be able to tell at least whether it is a small bore engine or a large bore.

From:

Chuck

Date:

01/22/2014 @ 4:51 PM

Comment:

Can you tell me size of engine number 8G162ER27691?

From:

Bubblegum73

Date:

01/16/2014 @ 1:24 AM

Comment:

at about 70degrees angle next to the dizzy, left side from front of engine bay

From:

Cheleker

Date:

01/08/2014 @ 8:50 AM

Comment:

Don't have a listing for 12HEH (this one has been discussed before) and a new web search turned up nothing useful. Where's the oil filter located?

From:

Bubblegum73

Date:

01/08/2014 @ 4:41 AM

Comment:

12heh9375u is my engine number can you please tell me what it is

From:

Frensham

Date:

10/09/2013 @ 5:09 AM

Comment:

I have an engine with the numbers BHM1667 000165. Are you able to tell me any more about the 1667. i have worked out it's a recon. but not much else. thanks

From:

Cheleker

Date:

10/01/2013 @ 9:17 AM

Comment:

Dood., I don't find any Mini or Metro engine number of the form 12H708AA. It might be from one of the ADO16 series of cars, but even a generic web search doesn't turn up that number.

From:

Doodling101

Date:

09/30/2013 @ 12:27 PM

Comment:

Hi Cheleker, Could you cast an eye on my part engine number and hopefully fill in the gaps. All I can read is 12H708AAHO O I know it's an 1275 engine but from what I don't know. I have no clue on the missing number and how many there should be.

From:

silverminiman

Date:

09/20/2013 @ 11:01 AM

Comment:

Thanks for that it really confirmed what I suspected. I know the car has not had any major engine work done to it as only 36000 genuine miles on clock. Been in my family since it was three years old and well worth a little work to preserve a rare car. Kind regards

From:

Cheleker

Date:

09/18/2013 @ 8:02 AM

Comment:

If the head is still the one that came on the car in 1986 and hasn't been reworked to take unleaded fuel, it is not designed to run unleaded. Will it run unleaded? Yes. For how long? Depends upon how much you drive it and how hard you drive it. The best option would be to find one of the few "lead additives" that actually work and use it. I don't know what brands in England work. Caution, there are many that don't!

From:

silverminiman

Date:

09/18/2013 @ 4:12 AM

Comment:

Hi I have a 1986 Mini Ritz sitting in my garage just waiting to be MOTd etc and given some exercise on the open road. Engine number is 99HA53P 134189. Please advise if possible whether this engine will run unleaded or will it need converting. appreciate your time and trouble. kind regards

From:

Cheleker

Date:

09/10/2013 @ 7:49 PM

Comment:

chris, both engine numbers indicate 1098cc engines, not 998cc engines.

From:

chris

Date:

09/10/2013 @ 2:48 PM

Comment:

hi there I have a mini cooper restoration project here in new Zealand and the person I got it off swears the engine is a 998 cc I have looked up the engine number of 10H702E-HI3240 and all sites say it is a 1098 cc engine . I am also lookin at purchasing an old complete engine for parts of a website in new Zealand and he also says his is a 998cc with an engine no of 10H7941AA54791 I am rather confused can anyone help?

From:

peu404

Date:

08/20/2013 @ 4:51 PM

Comment:

i have a engine code on my moke 1965 ENGINE IS GOLD I NO IT MUST BE A GOLD SEAL UNIT 8G 45RN 43304 AD

IS ANY ONE IN THE NO WHY THE AD IS THER UNDER ENGINE NO MANY THANKS

From:

Cheleker

Date:

08/13/2013 @ 8:12 PM

Comment:

Transverse Mini-like engines were put in a lot of different cars. It may be from another car. You may have the wrong engine number. I may not have all the Mini engine number options. Try an Internet search for 99H889A.

From:

Flodin

Date:

08/13/2013 @ 11:19 AM

Comment:

Ok! Weird there is something under the hood that looks like a mini engine ;-) i have to keep looking then. Thank you very much!

From:

Cheleker

Date:

08/12/2013 @ 10:16 AM

Comment:

Flodin, I can't find any record of a Mini engine 99H889A

From:

Flodin

Date:

08/10/2013 @ 11:12 PM

Comment:

Can some one please help identify my engine with #99H889AJH004582

Best regards,

From:

bogwopit

Date:

07/27/2013 @ 8:42 AM

Comment:

Hi, I have recently got a mk2 midget to tinker with. It is fitted with a 1098 morris minor engine and also came with a spare 'gold seal' engine.the engine no. is 38g530bs27159. Woul you have any idea what this unit is? many thanks Andy

From:

Cheleker

Date:

07/17/2013 @ 8:39 PM

Comment:

stretch, the only thing I see as close is 99H/A97P. You might try posting on a few Mini Forums (like the Mini Mania one) to see if anyone else has a Mini 30 with an original engine number. You could also contact BMIHT ("Heritage") with your Chassis Number. They may be able to get an engine number.

From:

stretch tech

Date:

07/17/2013 @ 12:21 PM

Comment:

hi could you help me with the code: 99H/-/90P

the missing character after the H is confusing me ?? if it helps the car is a Mini 30 and was first registered abroad for 9 years before returning to the UK - possible engine replacement abroad perhaps ?

Cheers

Rhys

From:

Redknight

Date:

07/14/2013 @ 2:01 AM

Comment:

Hi Cheleker. Thanks for your help. I just found out that the number is 791. There is a dent on the engine number plate which made the 1 look very much like a 9 so you are right about the valve cover. I am happy to know that it is a mini engine and probably the original one.

From:

Cheleker

Date:

07/11/2013 @ 9:36 PM

Comment:

Red, I'm not finding any engine used in Minis or Metros or ADO16s (MG1100, Austin American, etc.) with the 799 number. It doesn't show in the Mini factory literature. The number is too low for a Metro and the MG Metros were all 1275s, not like your 998. The valve cover marking isn't much use. The same size was used on many different cars and they seem to get swapped around a lot. You might take a shot at doing a web search for a 99H799P engine number.

From:

Redknight

Date:

07/11/2013 @ 1:08 PM

Comment:

Hi I bought a 1976 Austin Mini with engine 99H799P414944 with MG stamped on the rocker cover. Is it a Metro engine fitted in a Mini?

Thanks

From:

Cheleker

Date:

07/10/2013 @ 8:29 PM

Comment:

The engine number isn't much help. The Chassis Number (VIN) would help.

From:

Sashafelix

Date:

07/10/2013 @ 12:49 PM

Comment:

Hi i have a 73 roundnose but i wanna find out the exact model. My engine number is 12H705EH6980 any help would be greatly appreciated.

Regards

Frank

From:

Cheleker

Date:

06/26/2013 @ 7:57 AM

Comment:

Think about joining!

From:

Upesh

Date:

06/25/2013 @ 5:05 PM

Comment:

HI, i talked to MKI cooper S Registrar, and they told me that to give me some informations i have to be a member, so it´s not possible to get information from Simon.

Thanks

From:

Cheleker

Date:

06/25/2013 @ 8:33 AM

Comment:

One couldn't buy a 1071 right from the factory with a 1275 engine installed. Well, maybe if you were a real important person you could get a very late 1071 with a 1275 during the short period of time when all three S engines were being made. The 1275 engines as supplied in Minis were not red until 1990. I suggest you do some web searching looking for Mini Cooper Register. Find their web site and contact the Mk I Cooper S Registrar. Let Simon know what you have to see what he has to say about it.

From:

Upesh

Date:

06/25/2013 @ 7:09 AM

Comment:

I read somewhere, that this can be a upgrade available for 1071, that in factory, we could ask for the Red colour engine, that is a 1275... do you think is possible?

The BMIHT, told me that for that engine number and chassi, it is a 1071cc, i´m also confused how this can be true...

Thanks

From:

Cheleker

Date:

06/24/2013 @ 9:06 PM

Comment:

27311 by itself could be a 997, 998 or 1071. If BMIHT shows it as a 1071, the prefix you quoted is incorrect. That's a 1275 S prefix. There is always a chance the engine tag was originally stamped incorrectly...but VERY little chance. It is more likely that either the number really ends in H instead of Y, or the engine plate has been restamped (incorrectly) sometime during the car's life.

From:

Upesh

Date:

06/24/2013 @ 1:56 PM

Comment:

Hi, i recived the following information from BMH engine number 27311 recorded in the build ledger and this is a 1071cc engine.

I´m very confused, do you think this is a new information for the Mini Engine Identification?

Thanks

From:

Cheleker

Date:

06/24/2013 @ 11:17 AM

Comment:

Yes, it is possible if the 1071 was replaced with a 1275 engine!

From:

Upesh

Date:

06/24/2013 @ 1:37 AM

Comment:

Hi, Can you help, i have 1964 mini cooper S 1071CC, but engine number is: 9F-SA-Y/27XXX, is that possible?

Thanks

From:

Cheleker

Date:

06/23/2013 @ 5:20 PM

Comment:

Very unlikely. More likely it is a much later, A+ 998 (1980s vintage). Check to see if it is an A+.

From:

Cheleker

Date:

06/23/2013 @ 5:16 PM

Comment:

Martin, Not one I can find in the Mini and Metro range. Do some searching for ADO16 engines; e.g., Austin 1300, Morris 1300, etc.

From:

Mini mk3

Date:

06/16/2013 @ 12:14 PM

Comment:

I have a engine with number: LBB10473 100136 They told me it is a Cooper unit. Is it?

From:

Martin

Date:

06/14/2013 @ 4:47 PM

Comment:

I'm trying to identify the engine 12H702EH9921 Can anybody help?

It is a solid chest (no cam follower inspection plates) 1275cc with a mechanical fuel pumpon the back......?

Thanks a lot.

Martin

From:

Cheleker

Date:

05/02/2013 @ 8:50 AM

Comment:

farhan, The chassis number could be correct. It fits an early 1963 Austin Super DeLuxe build date. I've only found one reference to an "FAU" engine number. The reference wasn't much help. No explanation, and it was listed as the chassis number for a car up for auction! Look for the Specialist Mini Forums and post the engine number in the Early Mini Forum section. Someone there may be able to help.

From:

Cheleker

Date:

05/02/2013 @ 8:28 AM

Comment:

Robbie, Certainly a factory replacement engine, but not one I have any details for. You might try a generic web search.

From:

farhan

Date:

05/02/2013 @ 4:44 AM

Comment:

Hi... Can you please guide me re the specs and details of my engine. the number is 8AMFAUH-598387.

This engine is in a 1963 Austin Mini AA2S7S-450722. Although i doubt the accuracy of VIN because the fenders and doors are slightly different than the stock mode.

Thank you!

From:

Robbie

Date:

04/16/2013 @ 1:52 PM

Comment:

BHM 1454E -95279 also has the letters stamped DD and K , Think its a gold seal , can you help please ? , cheers Robbie

From:

Cheleker

Date:

04/15/2013 @ 8:53 AM

Comment:

9F/XE/Y shows in some records I have as from an Austrian Mk II Cooper S 1275cc engine. Look for chassis number starting with YKG2S4.

From:

Cage

Date:

04/15/2013 @ 12:18 AM

Comment:

Hi there. I am at the pointy end of a resto. I only have patials of and engine number. Looks like 9F/XE/Y5-9 can anyone help me out? Location Australia

From:

brian

Date:

04/13/2013 @ 2:50 AM

Comment:

Thanks Cheleker for the info much appreciated Brian

From:

Cheleker

Date:

04/11/2013 @ 8:34 AM

Comment:

The number isn't Mini or Metro as far as I can tell. It's likely from one of the ADO16 cars. In the U.S. that would have been an Austin America. The engine would not have come with an unleaded head. That doesn't mean it hasn't been converted sometime in the past. The only way to tell is to remove the head.

From:

brian

Date:

04/11/2013 @ 1:01 AM

Comment:

My engine is 12H-209 H894. At present its in a moke but would you know what it was fitted to originally. Also how can i tell if its lead free? Thanks Brian

From:

Cheleker

Date:

03/24/2013 @ 8:33 PM

Comment:

I don't recognize any Mini engine number that begins with SH.

From:

XZX

Date:

03/22/2013 @ 12:08 PM

Comment:

SH702EH31617 ?

From:

Cheleker

Date:

02/20/2013 @ 9:19 AM

Comment:

A2S7 is part of the Chassis number (VIN) for a MK I Austin -- earlier than 1971. You engine number of 10H is a 1098cc engine, often called an 1100.

From:

Dylan

Date:

02/20/2013 @ 8:29 AM

Comment:

Hi, Im not sure what engine I have in my 1971 mini and could you tell me what model it is??it says model is:A2S7, but I got no idea what that means, the engine number is 10H743JH1203, hopefully you can help me?? thanks a lot

From:

Cheleker

Date:

02/18/2013 @ 8:33 AM

Comment:

Ian, I have built a listing of 51 factory replacement engines for which I have details. BHM1271E is not one of them. I have a listing of another 10 (now 11!) for which I have numbers but no details. Sometimes a web search will lead you to information, but I didn't find anything on this engine.

From:

Ian

Date:

02/18/2013 @ 6:11 AM

Comment:

What size engine is this Engine number BHM1271E

From:

Cheleker

Date:

01/16/2013 @ 8:27 PM

Comment:

I have a listing of about 30 factory replacement engine numbers for which I have descriptions and another dozen or so that I have seen that I do not have descriptions for...and yours is one I do not have on either list! You can not assume it will be the same as -33. Try a web search for that number to see if you can turn something up that way.

From:

major mini

Date:

01/16/2013 @ 1:02 PM

Comment:

Hi, i have 1275 engine with RKM1134E, is this same as RKM1133E ? It looks like a 70,s A series type engine.

From:

Cheleker

Date:

12/02/2012 @ 9:31 PM

Comment:

wyattsdad, I have about 50 factory replacement engine numbers with information on about 40 of them...and still, new ones pop up now and then like yours. A google search only turned up one reference to that engine number (on a French web site), but there was no explanation. I'd guess that it is a 1275, as you suspect, because the number was referenced in a discussion of the Innocenti 1300s. Find the article on ID Your Mini. There is a section in that one that deals with how to figure out 1275s vs. other engine sizes.

From:

wyattsdad

Date:

11/30/2012 @ 3:39 PM

Comment:

guessin reconditon 1275 but mine is rkm1132e 91981. what is it

From:

Mini Baba

Date:

11/26/2012 @ 12:33 AM

Comment:

Cheleker, Thank you very much indeed for the infor.

Mini baba

From:

Cheleker

Date:

11/25/2012 @ 5:00 PM

Comment:

MiniBaba, you can't tell the year of manufacture from the engine number. If the engine is still in the original car, you can have the Chassis Number/VIN researched to get the build date of the car.

The 12A/2D engine is listed in the above article. !991+ SPi (single point injection), 1275cc engine with 9.4:1 compression ratio.

From:

Mini Baba

Date:

11/24/2012 @ 10:27 PM

Comment:

Please someone help me to find the engine manufacturing year from this engine number, 12 A 2 DF 75267880. I was told this is an EFI 1200 Engine, is that right????

From:

brixy

Date:

12/16/2011 @ 6:57 PM

Comment:

I just purchased an 1970 cooper with the engine number 12HCC4AA 10731 (followed by what appears to be another 3 or possibly a 5). It would appear to be a 1275 cc but what do the rest of the numbers and letters indicate?

Thanks

From:

Cheleker

Date:

04/17/2011 @ 8:45 PM

Comment:

Bryan, The reason you didn't find the 12HD is because you logically looked for it in the Engine section of the Tech Articles! Unfortunatley, that only covers Mini engines. Your 12HD is a Metro engine, from the late 1980s. The 12HD was the last series done before the 12HE came out with the unleaded head. Check out the article, "Mini Identification" in the General Section. Go to the identifying your Mini by the engine section.

From:

beegee

Date:

04/16/2011 @ 11:17 AM

Comment:

Sorry to trouble you but I have tried really hard to identify the engine in my 1969 mk2 cooper with no success. I linked to your superb site via Mini Cooper register. the engine is a 1275a+ the number is 12HD12 102218 . I can find no ref to the D in prefix .Please can you help? I am a brit living in Spain. many thanks, Bryan

From:

MiniZul07

Date:

03/02/2011 @ 10:11 PM

Comment:

What is my engine specification and what model

Engine No: 12A2EJ34 340234

Chassis No: 2 820S 023808A

From:

clos

Date:

09/21/2010 @ 2:23 PM

Comment:

Can someone help me identifying this engine # 12HE25-119591? Thanks

From:

rob dougherty

Date:

08/31/2010 @ 4:51 AM

Comment:

my engine # is 85h791p85527 you state that you are most likely not to see this engine because not many were built. how many were built? and where were the sold thanks

From:

Cheleker

Date:

07/06/2010 @ 9:26 PM

Comment:

jj, Not likely from a Mini...at least I can't find such a reference. If the back of the block is solid (i.e., no tappet covers) it's most likely from one of the ADO16 range; e.g., the Austin 1300 or Austin America.

From:

jjorrantia

Date:

07/06/2010 @ 3:33 PM

Comment:

Can you help me to identify this engine 12H159AR114715 what type and origin if you can. Thanks Joaquin Orrantia

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Classic Mini Engine: Identification Data

How to Identify Your Classic Mini Engine

Original Engine Identification Numbers

Factory Replacement Engine Reference Numbers (i.e. New, and Gold and Silver Seal units)

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