1.311" (33.3mm) dia x 3.57 long intake valve. Our race valves are produced in EN214N steel and require Manganese/Silicon bronze alloy valve guides. They are stellite tipped and use the later narrow, single collet groove and current valve head shapes. As it is possible, even common, to swap one head for another on 1275 engines, it is quite easy to become confused, or worse yet, confuse the parts-guy when it is time to order new valves! Be aware that if the head has been worked on previously, it may have oversize valves; it may have undersize if seats have been installed. Unless you are 100% sure what is in your cylinder head, it is a good idea to remove a valve for accurate measurement. There are two lengths used (nominally 3.52" & 3.57") three different keepers, (wide, narrow, and three-groove) and many different head diameters! These valves are in stock at Mini Mania! Note that 12G1316 (Smog-Type), all variations of the 12G940, and the latest CAM head castings all use the following 3.57" long valves.
Classic Mini A-Series Competition Intake Valve 1.31 x 3.57 Sprite & Midget Morris Minor
1.311" (33.3mm) dia x 3.57 long intake valve. Our race valves are produced in EN214N steel and require Manganese/Silicon bronze alloy valve guides. They are stellite tipped and use the later narrow, single collet groove and current valve head shapes. As it is possible, even common, to swap one head for another on 1275 engines, it is quite easy to become confused, or worse yet, confuse the parts-guy when it is time to order new valves! Be aware that if the head has been worked on previously, it may have oversize valves; it may have undersize if seats have been installed. Unless you are 100% sure what is in your cylinder head, it is a good idea to remove a valve for accurate measurement. There are two lengths used (nominally 3.52" & 3.57") three different keepers, (wide, narrow, and three-groove) and many different head diameters! These valves are in stock at Mini Mania! Note that 12G1316 (Smog-Type), all variations of the 12G940, and the latest CAM head castings all use the following 3.57" long valves.
1.402" (35.6mm) dia x 3.57" long intake valve.
Our race valves are produced in EN214N steel and are stellite tipped and use the latest triple collet groove and current valve head shapes, plasma heat treated for eradicating unleaded petrol wear.
As it is possible, even common, to swap one head for another on 1275 engines, it is quite easy to become confused, or worse yet, confuse the parts-guy when it is time to order new valves. Be aware that if the head has been worked on previously, it may have oversize valves, it may have undersize if seats have been installed. Unless you are 100% sure what is in your cylinder head, it is a good idea to remove a valve for accurate measurement. There are two lengths used (nominally 3.52" & 3.57") three different keepers, (wide, narrow, and three-groove) theses are the 3 groove a plus type.
$11.90
Classic Austin Mini Intake Valve 1.3 X 3.57 Small Keeper
$49.90
A-Series Performance Intake Valve 1.31 x 3.57 Classic Mini Sprite & Midget Morris Minor
1.402" (35.6mm) dia x 3.57" long intake valve.
Our race valves are produced in EN214N steel and are stellite tipped and use the latest triple collet groove and current valve head shapes, plasma heat treated for eradicating unleaded petrol wear.
As it is possible, even common, to swap one head for another on 1275 engines, it is quite easy to become confused, or worse yet, confuse the parts-guy when it is time to order new valves. Be aware that if the head has been worked on previously, it may have oversize valves, it may have undersize if seats have been installed. Unless you are 100% sure what is in your cylinder head, it is a good idea to remove a valve for accurate measurement. There are two lengths used (nominally 3.52" & 3.57") three different keepers, (wide, narrow, and three-groove) theses are the 3 groove a plus type.
1.15" dia exhaust valve. Our race valves are produced in EN214N steel, stellite tipped and use the later narrow collet groove and current valve head shapes. As it is possible, even common, to swap one head for another on 1275 engines, it is quite easy to become confused. Be aware that if the head has been worked on previously, it may have oversize valves, it may have undersize if seats have been installed. Unless you are 100% sure what is in your cylinder head, it is a good idea to remove a valve for accurate measurement. There are two lengths used (nominally 3.52" & 3.57") three different keepers, (wide, narrow, and three-groove) and many different head diameters. All variations of the 12G940, and the latest CAM head castings all use the 3.57" long valves.
Classic Mini exhaust valve 1.15 X 3.57 small keeperClassic Mini exhaust valve 1.15 X 3.57 small keeperClassic Mini exhaust valve 1.15 X 3.57 small keeperClassic Mini exhaust valve 1.15 X 3.57 small keeperClassic Mini exhaust valve 1.15 X 3.57 small keeperClassic Mini exhaust valve 1.15 X 3.57 small keeperClassic Mini exhaust valve 1.15 X 3.57 small keeperClassic Mini exhaust valve 1.15 X 3.57 small keeperClassic Mini exhaust valve 1.15 X 3.57 small keeperClassic Mini exhaust valve 1.15 X 3.57 small keeperClassic Mini exhaust valve 1.15 X 3.57 small keeper
1.15" dia exhaust valve. Our race valves are produced in EN214N steel, stellite tipped and use the later narrow collet groove and current valve head shapes. As it is possible, even common, to swap one head for another on 1275 engines, it is quite easy to become confused. Be aware that if the head has been worked on previously, it may have oversize valves, it may have undersize if seats have been installed. Unless you are 100% sure what is in your cylinder head, it is a good idea to remove a valve for accurate measurement. There are two lengths used (nominally 3.52" & 3.57") three different keepers, (wide, narrow, and three-groove) and many different head diameters. All variations of the 12G940, and the latest CAM head castings all use the 3.57" long valves.
1.158" (29.4) dia exhaust valve for 12G940 casting.
Our race valves are produced in EN214N steel and rquire Manganese/Silicon bronze alloy valve guides. They are stellite tipped and use the later narrow, single collet groove and current valve head shapes. These valves are heat treated to eradicate wear from unleaded petrol
As it is possible, even common, to swap one head for another on 1275 engines, Be aware that if the head has been worked on previously, it may have oversize valves; it may have undersize if seats have been installed. Unless you are 100% sure what is in your cylinder head, it is a good idea to remove a valve for accurate measurement. There are two lengths used (nominally 3.52" & 3.57") three different keepers, (wide, narrow, and three-groove) and many different head diameters! These valves are in stock at Mini Mania!
Note that 12G1316 (Smog-Type), all variations of the 12G940, and the latest CAM head castings all use the following 3.57" long valves.
As it is possible, even common, to swap one head for another on 1275 engines, be aware that if the head has been worked on previously, it may have oversize valves, it may have undersize if seats have been installed. Unless you are 100% sure what is in your cylinder head, it is a good idea to remove a valve for accurate measurement. There are two lengths used (nominally 3.52" & 3.57") three different keepers, (wide, narrow, and three-groove) and many different head diameters.
1.158" (29.4) dia exhaust valve for 12G940 casting.
Our race valves are produced in EN214N steel and rquire Manganese/Silicon bronze alloy valve guides. They are stellite tipped and use the later narrow, single collet groove and current valve head shapes. These valves are heat treated to eradicate wear from unleaded petrol
As it is possible, even common, to swap one head for another on 1275 engines, Be aware that if the head has been worked on previously, it may have oversize valves; it may have undersize if seats have been installed. Unless you are 100% sure what is in your cylinder head, it is a good idea to remove a valve for accurate measurement. There are two lengths used (nominally 3.52" & 3.57") three different keepers, (wide, narrow, and three-groove) and many different head diameters! These valves are in stock at Mini Mania!
Note that 12G1316 (Smog-Type), all variations of the 12G940, and the latest CAM head castings all use the following 3.57" long valves.
As it is possible, even common, to swap one head for another on 1275 engines, be aware that if the head has been worked on previously, it may have oversize valves, it may have undersize if seats have been installed. Unless you are 100% sure what is in your cylinder head, it is a good idea to remove a valve for accurate measurement. There are two lengths used (nominally 3.52" & 3.57") three different keepers, (wide, narrow, and three-groove) and many different head diameters.
For valve stems with 3 grooves, on some A-Plus heads, use CAM6975 keepers. Order the keepers to go with the valves you will be using! Also fits the Sprite, MG Midget, and Morris Minor. This is for a PAIR of collets - 8 needed per head.
For valve stems with 3 grooves, on some A-Plus heads, use CAM6975 keepers. Order the keepers to go with the valves you will be using! Also fits the Sprite, MG Midget, and Morris Minor. This is for a PAIR of collets - 8 needed per head.
1.402" (35.6mm) dia x 3.57" long intake valve. These are the 'waisted stem' design that provides maximum air flow needed for high performance applications. Our race valves are produced in EN214N steel and rquire Manganese/Silicon bronze alloy valve guides. They are stellite tipped and use the later narrow, single collet groove. As it is possible, even common, to swap one head for another on 1275 engines, it is quite easy to become confused, or worse yet, confuse the parts-guy when it is time to order new valves! Be aware that if the head has been worked on previously, it may have oversize valves; it may have undersize if seats have been installed. Unless you are 100% sure what is in your cylinder head, it is a good idea to remove a valve for accurate measurement. There are two lengths used (nominally 3.52" & 3.57") three different keepers, (wide, narrow, and three-groove) and many different head diameters! These valves are in stock at Mini Mania! Note that 12G1316 (Smog-Type), all variations of the 12G940, and the latest CAM head castings all use the following 3.57" long valves.
Austin Mini intake valve 1.4 X 3.57 small keeperAustin Mini intake valve 1.4 X 3.57 small keeperAustin Mini intake valve 1.4 X 3.57 small keeperAustin Mini intake valve 1.4 X 3.57 small keeperAustin Mini intake valve 1.4 X 3.57 small keeperAustin Mini intake valve 1.4 X 3.57 small keeperAustin Mini intake valve 1.4 X 3.57 small keeper
1.402" (35.6mm) dia x 3.57" long intake valve. These are the 'waisted stem' design that provides maximum air flow needed for high performance applications. Our race valves are produced in EN214N steel and rquire Manganese/Silicon bronze alloy valve guides. They are stellite tipped and use the later narrow, single collet groove. As it is possible, even common, to swap one head for another on 1275 engines, it is quite easy to become confused, or worse yet, confuse the parts-guy when it is time to order new valves! Be aware that if the head has been worked on previously, it may have oversize valves; it may have undersize if seats have been installed. Unless you are 100% sure what is in your cylinder head, it is a good idea to remove a valve for accurate measurement. There are two lengths used (nominally 3.52" & 3.57") three different keepers, (wide, narrow, and three-groove) and many different head diameters! These valves are in stock at Mini Mania! Note that 12G1316 (Smog-Type), all variations of the 12G940, and the latest CAM head castings all use the following 3.57" long valves.
I'm looking for a set of C-aeg 544 intakes and Caeg106 exhaust valves. Or a stainless equivalent for a 940/1305 head?
Is there an equivalent set of 8 in the Rimflow style?
New competition valve cotter, these are precision CNC machined from 4340 and heat treated to a better spec than EN24T and claimed to be stronger in fatigue life. This is for one pair (two halves) - 8 are needed for one A-Series head.
These are made to RACE specification as the only current type available are not adequate for performance heads or valves. We tried everything else available and decided to go one better in quality and fitment, do not take a risk--buy the best available on this part.
All the early heads used the 2A11 cotters, noted by the wide slot in the valve. Current production race quality valves and most aftermarket valves, use the 88G549 keeper with a single narrow groove. Valve stems with 3 grooves on some A-Plus heads, use CAM6795 keepers. Order the correct cotters to go with the valves you will be using. Two halves equal one cotter for one valve, order 8 for 1 complete cylinder head.
Selected: Single Groove (Small) Collet (Keeper), Race
Alternate Products
$8.90
Small Valve Keeper (Collet) Pair | Mini | Sprite & Midget | Morris Minor
New competition valve cotter, these are precision CNC machined from 4340 and heat treated to a better spec than EN24T and claimed to be stronger in fatigue life. This is for one pair (two halves) - 8 are needed for one A-Series head.
These are made to RACE specification as the only current type available are not adequate for performance heads or valves. We tried everything else available and decided to go one better in quality and fitment, do not take a risk--buy the best available on this part.
All the early heads used the 2A11 cotters, noted by the wide slot in the valve. Current production race quality valves and most aftermarket valves, use the 88G549 keeper with a single narrow groove. Valve stems with 3 grooves on some A-Plus heads, use CAM6795 keepers. Order the correct cotters to go with the valves you will be using. Two halves equal one cotter for one valve, order 8 for 1 complete cylinder head.
1.043" (26.5mm) Dia x 3.44" exhaust valve for all small bore castings. .
Our race valves are produced in EN214N steel and rquire Manganese/Silicon bronze alloy valve guides. They are stellite tipped and use the later narrow, single collet groove and current valve head shapes.
Exhaust Valve 1.04 X 3.44 Triple GrooveExhaust Valve 1.04 X 3.44 Triple GrooveExhaust Valve 1.04 X 3.44 Triple GrooveExhaust Valve 1.04 X 3.44 Triple GrooveExhaust Valve 1.04 X 3.44 Triple Groove
$8.90
Small Valve Keeper (Collet) Pair | Mini | Sprite & Midget | Morris Minor
1.043" (26.5mm) Dia x 3.44" exhaust valve for all small bore castings. .
Our race valves are produced in EN214N steel and rquire Manganese/Silicon bronze alloy valve guides. They are stellite tipped and use the later narrow, single collet groove and current valve head shapes.
The stock intake valves for the 948/1098cc cylinder heads are 1.06" or 1.15"; if you want better performance you need bigger valves. Our special 1.22" intake valves will fit all small bore heads and only available with triple collet grooves. Our race valves are produced in EN214N steel, stellite tipped and PLASMA treated to eradicate wear from unleaded petrol.
Intake Valve 1.22 Triple Grove Late ModelIntake Valve 1.22 Triple Grove Late ModelIntake Valve 1.22 Triple Grove Late ModelIntake Valve 1.22 Triple Grove Late Model
$8.90
Small Valve Keeper (Collet) Pair | Mini | Sprite & Midget | Morris Minor
The stock intake valves for the 948/1098cc cylinder heads are 1.06" or 1.15"; if you want better performance you need bigger valves. Our special 1.22" intake valves will fit all small bore heads and only available with triple collet grooves. Our race valves are produced in EN214N steel, stellite tipped and PLASMA treated to eradicate wear from unleaded petrol.
1.259" (32mm) dia x 3.57 long EXHAUST valve.
Our race valves are produced in EN214N steel and rquire Manganese/Silicon bronze alloy valve guides. They are stellite tipped and use the later narrow, single collet groove and current valve head shapes.
As it is possible, even common, to swap one head for another on 1275 engines, it is quite easy to become confused, or worse yet, confuse the parts-guy when it is time to order new valves! Be aware that if the head has been worked on previously, it may have oversize valves; it may have undersize if seats have been installed. Unless you are 100% sure what is in your cylinder head, it is a good idea to remove a valve for accurate measurement. There are two lengths used (nominally 3.52" & 3.57") three different keepers, (wide, narrow, and three-groove) and many different head diameters! These valves are in stock at Mini Mania!
Note that 12G1316 (Smog-Type), all variations of the 12G940, and the latest CAM head castings all use the following 3.57" long valves.
Exhaust Valve 32mm 1.259 X 3.57Exhaust Valve 32mm 1.259 X 3.57Exhaust Valve 32mm 1.259 X 3.57
Selected: Exhaust Valve, 32mm (1.259"), Small Keeper
Alternate Products
$8.90
Small Valve Keeper (Collet) Pair | Mini | Sprite & Midget | Morris Minor
1.259" (32mm) dia x 3.57 long EXHAUST valve.
Our race valves are produced in EN214N steel and rquire Manganese/Silicon bronze alloy valve guides. They are stellite tipped and use the later narrow, single collet groove and current valve head shapes.
As it is possible, even common, to swap one head for another on 1275 engines, it is quite easy to become confused, or worse yet, confuse the parts-guy when it is time to order new valves! Be aware that if the head has been worked on previously, it may have oversize valves; it may have undersize if seats have been installed. Unless you are 100% sure what is in your cylinder head, it is a good idea to remove a valve for accurate measurement. There are two lengths used (nominally 3.52" & 3.57") three different keepers, (wide, narrow, and three-groove) and many different head diameters! These valves are in stock at Mini Mania!
Note that 12G1316 (Smog-Type), all variations of the 12G940, and the latest CAM head castings all use the following 3.57" long valves.
Our race valves are produced in EN214N steel and require Manganese/Silicon bronze alloy valve guides. They are stellite tipped and use the later narrow, single collet groove and current valve head shapes.
As it is possible, even common, to swap one head for another on 1275 engines, it is quite easy to become confused, or worse yet, confuse the parts-guy when it is time to order new valves! Be aware that if the head has been worked on previously, it may have oversize valves; it may have undersize if seats have been installed. Unless you are 100% sure what is in your cylinder head, it is a good idea to remove a valve for accurate measurement. There are two lengths used (nominally 3.52" & 3.57") three different keepers, (wide, narrow, and three-groove) and many different head diameters! These valves are in stock at Mini Mania! Note that 12G1316 (Smog-Type), all variations of the 12G940, and the latest CAM head castings all use the following 3.57" long valves.
Exhaust Valve 30.9MM 1.22" X 3.57" small keeper | Classic Mini | Sprite & MG Midget | Morris MinorExhaust Valve 30.9MM 1.22" X 3.57" small keeper | Classic Mini | Sprite & MG Midget | Morris Minor
$8.90
Small Valve Keeper (Collet) Pair | Mini | Sprite & Midget | Morris Minor
1.220" (31mm) dia x 3.57 exhaust valve.
Our race valves are produced in EN214N steel and require Manganese/Silicon bronze alloy valve guides. They are stellite tipped and use the later narrow, single collet groove and current valve head shapes.
As it is possible, even common, to swap one head for another on 1275 engines, it is quite easy to become confused, or worse yet, confuse the parts-guy when it is time to order new valves! Be aware that if the head has been worked on previously, it may have oversize valves; it may have undersize if seats have been installed. Unless you are 100% sure what is in your cylinder head, it is a good idea to remove a valve for accurate measurement. There are two lengths used (nominally 3.52" & 3.57") three different keepers, (wide, narrow, and three-groove) and many different head diameters! These valves are in stock at Mini Mania! Note that 12G1316 (Smog-Type), all variations of the 12G940, and the latest CAM head castings all use the following 3.57" long valves.
1.158" (29.4) dia exhaust valve for 12G940 casting.
Our race valves are produced in EN214N steel and rquire Manganese/Silicon bronze alloy valve guides. They are stellite tipped and use the later narrow, single collet groove and current valve head shapes.
As it is possible, even common, to swap one head for another on 1275 engines, it is quite easy to become confused, or worse yet, confuse the parts-guy when it is time to order new valves! Be aware that if the head has been worked on previously, it may have oversize valves; it may have undersize if seats have been installed. Unless you are 100% sure what is in your cylinder head, it is a good idea to remove a valve for accurate measurement. There are two lengths used (nominally 3.52" & 3.57") three different keepers, (wide, narrow, and three-groove) and many different head diameters! These valves are in stock at Mini Mania!
Note that 12G1316 (Smog-Type), all variations of the 12G940, and the latest CAM head castings all use the following 3.57" long valves.
$20.90
Classic Austin Mini 1.15 X 3.56 Exhaust Single Groove Valve
1.158" (29.4) dia exhaust valve for 12G940 casting.
Our race valves are produced in EN214N steel and rquire Manganese/Silicon bronze alloy valve guides. They are stellite tipped and use the later narrow, single collet groove and current valve head shapes.
As it is possible, even common, to swap one head for another on 1275 engines, it is quite easy to become confused, or worse yet, confuse the parts-guy when it is time to order new valves! Be aware that if the head has been worked on previously, it may have oversize valves; it may have undersize if seats have been installed. Unless you are 100% sure what is in your cylinder head, it is a good idea to remove a valve for accurate measurement. There are two lengths used (nominally 3.52" & 3.57") three different keepers, (wide, narrow, and three-groove) and many different head diameters! These valves are in stock at Mini Mania!
Note that 12G1316 (Smog-Type), all variations of the 12G940, and the latest CAM head castings all use the following 3.57" long valves.
1.311" (33.3mm) dia x 3.57 long intake valve. Our race valves are produced in EN214N steel and require Manganese/Silicon bronze alloy valve guides. They are stellite tipped and use the later narrow, single collet groove and current valve head shapes. As it is possible, even common, to swap one head for another on 1275 engines, it is quite easy to become confused, or worse yet, confuse the parts-guy when it is time to order new valves! Be aware that if the head has been worked on previously, it may have oversize valves; it may have undersize if seats have been installed. Unless you are 100% sure what is in your cylinder head, it is a good idea to remove a valve for accurate measurement. There are two lengths used (nominally 3.52" & 3.57") three different keepers, (wide, narrow, and three-groove) and many different head diameters! These valves are in stock at Mini Mania! Note that 12G1316 (Smog-Type), all variations of the 12G940, and the latest CAM head castings all use the following 3.57" long valves.
Standard Production & Competition Valves for all Classic Mini cylinder heads available in sizes to fit. Over-sized options with various collet designs will suite every need. Cam followers both stock, High Performance or race versions are also available.
Most motors will go at least 80,000 miles before "needing a valve job"! But what are the signs? How do I determine if I really need it? Do I do it myself or pay a local machine shop.
Call them cotters, collets or keepers, these little items are often overlooked during a head rebuild. If yours are worn and need to be replaced, make sure you order the right ones. Minis used three different versions over the years.
The engine build I recently covered in previous Mini Magazine issues developed into a bit of an ongoing 'project'. During a discourse with the editorial staff at Mini Mag, it was decided the build feature presented an ideal opportunity to demonstrate just exactly what such an engine build is capable of in days where it's generally believed you have to have an all-singing, all-dancing 1380cc engine to have an enjoyable road burner - leaving those with very limited budgets a little depressed.
Many moons ago, the standard performance valve shape was the then-ubiquitous 'penny-on-a-stick' profile. For the very good and simple reason it minimised airflow obstruction by having the least amount of material in the way. Very plausible, and a design that many have stayed with to this day
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![Exhaust Valve 30.9MM 1.22" X 3.57" small keeper | Classic Mini | Sprite & MG Midget | Morris Minor](/images_temp/80060000112g941.jpg "Exhaust Valve 30.9MM 1.22" X 3.57" small keeper | Classic Mini | Sprite & MG Midget | Morris Minor")
