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 Posted: Feb 24, 2007 08:23AM
meb
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I have a manifold similliar to the one shown by Tulka. Markings on the bottom are "BA82357 / EG49".  I currently have a pair of HS4s on it but it could also take HS6s. It uses locating rings, and has emission and servo takeoffs. It's 6" on center.

meb   

 Posted: Feb 23, 2007 04:04PM
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Tulka, Interesting variation of the 12A-309.  Must be from a 998 since all 997's used the studs for location.  All of mine are from 997's, more common in the US than the 998 Cooper.  I'll revise the list to show that one as either stud or ring mount.

Are there any other markings on the AEG 489?  The markings in your picture appear to be on the bottom of the manifold.  The markings I show on the chart are from an AEG 489 that's mounted on one of my race cars, will take it off this weekend to see if there's anything on the bottom of it.  The engine needs to come out anyway .....

Finally, do you have a reference source for the AEG 572 part number for the Evolution manifold?  Not challenging your input, I've just never seen that number listed anywhere and would like to document it if possible.  As noted on my chart the RAC homologation papers (copy attached) don't list a part number, but the pictured manifold has the rectangular mounting face of the C-AEG 488.

Great input, keep it coming.  I'll see about MM including all this in the Tech Section.

 Posted: Feb 23, 2007 03:03PM
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I expect Nick (Min-E-Bitz) will chime in. He's done an extensive list of the Cooper/S manifolds.

When the list gets done (or at least far enough along!), contact Mini Mania and have them add it to the Tech section under Articles & News.

 Posted: Feb 23, 2007 01:37PM
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 Posted: Feb 23, 2007 01:36PM
 Edited:  Feb 23, 2007 01:45PM
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Same as Randys 12A309 manifold,but with ring location.Also AEG489 casting numbers on original competitions manifold.

 The "Evolution" can be AEG572/MK2 Cooper/S

 Tulka

 Posted: Feb 23, 2007 11:32AM
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Not a problem if you want to include non-factory manifolds, I have a few myself.  I will expand the chart to include them.  For the moment let's keep it to twin carb SU manifolds.  Provide a picture if you can and a write-up of anything not immediately visible such as some of the stamped numbers.  As BWA has pointed out, some of the markings don't photograph well.  (And he verified that there is a P2 casting, excellent!)  Let me know if there's any characteristics that should be added to the chart.  Water heating might be one for the aftermarket manifolds - I'm also going to measure the carb mounting angle for the various cars and add it to the list (i.e., Mini vs. Sprite).  I'm running the same topic on the Vintage Mini Racing board and will combine the results.  Unless anyone has a problem with it I plan to repost the pictures you provide on both boards and/or create a reference document with pictures embedded.  If that's a problem, let me know.

 Posted: Feb 23, 2007 09:37AM
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Mk1, S&M is doing the charting, but if he doesn't mind including the aftermarket ones, I'd sure like to see them.

 Posted: Feb 23, 2007 09:19AM
 Edited:  Feb 23, 2007 09:20AM
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My 12A661P2 1004, you can't really see the 1004, but its there. Crappy camera. I got this from a gentleman in England, it wasn't a Stateside purchase, if that means anything.

Cheers,

Ian

 Posted: Feb 23, 2007 08:40AM
MK1
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I will have a dig through some of my boxes of tut at the weekend to see what I can find.  I'll send pics in on Monday.  Are we sticking to BMC manifolds or is anyone interested in Non BMC too.  Downton, Speedwell, Mangoletsi etc?

Mark F.

Check Out //mk1-performance-conversions.co.uk loads of info and interesting stuff for the mk1 nut.

 Posted: Feb 23, 2007 08:24AM
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All, I have AEG 347 and C-AEG 489 (at the very least) and will be posting pictures of those, so don't worry about searching for examples.  Also have three or four versions of the MG 1100.

Club Man's excellent pics support that that's a 998-only manifold.  It's the center boss that's drilled and tapped for vacuum, the location of the PCV valve.  Were it for an S brake booster it would be the right boss drilled and tapped.

The pictures do raise a question.  I've received descriptions (but no pictures) of this manifold having P2 cast in it, but the pictures show only the P.  Anyone have a P2 casting?

RM

 Posted: Feb 23, 2007 08:14AM
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Good stuff! Thanks for the hard work. I'll make some time to dig through the boxes on the magic shelves to get some photos to pass on to you. I'm not sure how many different ones I have but there should be a few among the 15 or 20. I also have some "pretenders," as well; including MG1100 and 1 1/8" Sprite.

 Posted: Feb 23, 2007 04:58AM
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12A661 P 1004

Make it idiot proof, and someone will make a better idiot....

 

 Posted: Feb 22, 2007 10:44PM
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Given recent discussions on this board and the Vintage Mini Racing board concerning Cooper intake manifolds, I've tried to make up a chart of the pertinent info.  As much as possible this is based on official publications (BMC parts manuals, Special Tuning Sheets, Homologation Papers) and having an actual example of the manifold to inspect.  There are gaps and possible errors, so factual input is appreciated, either via this thread or direct e-mail.  Updated versions of the chart will be posted and will hopefully be of use for reference.  No chest thumping and tall tales please, just verifiable facts.  If you have pictures, preferrably of stripped manifolds, those would be appreciated.  I've attached pictures of the great grandfather of them all, 12A 308, and have a few more to strip and photo over the weekend.  I'm also accumulating information on some of the posers and red herrings, e.g., MG 1100, Sprite, etc.  Bottom line on the Cooper manifolds is that they were pretty much all the same dimensionally with variations in the attachments.

Found 113 Messages

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