8 replies to this topic

[MarkGTT]

Hi, does anyone have a link or know the part numbers for all mini / metro cranks?

cheers, Mark

[Dan]

For what size engine?

[MarkGTT]

all..

or the part numbers and where they originally came from for cranks starting CAM6***

cheers

[Guess-Works.com]

The CAM number is a casting number not part number.

List of Casting and Stamp numbers...

22A62/63 Early 850 with oil feed for primary gear, 1.375" tail 850cc
22A298 Early 850 thin nose crank, 1.375" diameter tail 850cc
12A670 850 crank with 1.5" diameter tail 850cc
12A298 997cc
12A375 Oil feed hole for primary gear 997cc
12A595 Early crankshaft casting 998cc
12A1451 Later specification casting 998cc
BHM1436 A plus 1985 on (12A1451 casting) 998cc
12G82 1100cc
AEG330 EN40B not cross drilled 970cc
AEG171 EN40B not cross drilled 1071cc
12G1287/8 EN16 1.625" con rod journal 1275cc not 's'
12G1505 EN16 1.75" con rod journal 1275cc not 's'
12G1683 12G1505 casting tuftrided 1.75" con rod journal 1275cc not 's'
CAM6232 Rolled fillet radius on bearing journals, A-Plus, 1.75" 1275cc not 's'
AEG315/6 EN40B not cross drilled, nitrided, 1.625" 1275 Cooper 's'
AEG479/480 EN40B cross drilled, nitrided, 1.625" 1275 Cooper 's'
AEG623 EN16 tuftrided 1.625" con rod journal 1275 Cooper 's'

[MarkGTT]

thanks looks like im just intrested in the A+ from the above list, im still a bit confused though.. are there a number of different cranks with the CAM casting?

for instance i thought the metro turbo crank was CAM 6581

[Dan]

Casting numbers are essentially only a way of cataloging the tools that the casts are made from and the rough castings they produce, they don't refer to finished parts. Cranks and other parts aren't stamped with a part number because the part description depends on the machining process the casting has been through. This is particularly where people fall down when talking about large bore heads, they are almost all made from the same basic casting but it's finished in many different ways. If a casting is unique to a part then sometimes the casting number will marry up with the part number but then if later the same tool is used to cast a part that is machined to a different spec it will be given a different part number but keep the same casting number. For example crank part number CAM6232 is machined from casting CAM6232 but so is crank BHM11243. Crank 8G2740 is machined from casting 12G1505 and so is crank AEG623. Cranks with a part number starting C-AEG tend to have a part number that is 1 less than the casting number when made for a Mini but a different number elsewhere. It would take many hours of poring over parts lists from the various BMC marques to compile an exhaustive list. Is there a specific reason that you are asking that one of us might be able to help you with? Given the amount of different models and marques that BMC parts are fitted to it's unlikely there is a complete list anywhere.

[Asphalt]

Some additional ones to guessworks list (I'm too lazy to delete those allready mentioned):

* 22A62 - 850cc - Early type with oil feed for primary gear, 1.375" dia. tail
* 22A63 - 850cc - Early type with oil feed for primary gear, 1.375" dia. tail
* 22A298 - 850cc - Early type thin-nose crank, 1.375" dia. tail
* 12A670 - 850cc - Later type with 1.5" dia. tail
* AEG515 - 850cc - Special Tuning Competition Crankshaft, Tuftrided
* 12A298 - 997cc - Original Cooper crank
* 12A375 - 997cc - Cooper crank with oil feed hole for primary gear
* 8G2733 - 998cc - ?
* 12A595 - 998cc - Early EN16T spec
* 12A1451[R] - 998cc - Later, pre-A+ EN16T spec
* BHM1436 - 998cc - A+ spec, 1985 onwards (12A1451 forging)
* 12G82 - 1100cc - Standard across the board transverse A-series EN16T spec
* AEG330 - 970cc - EN40B forged, non-cross drilled
* AEG171 - 1071cc - EN40B forged, non-cross drilled
* 12G2827 - 1071cc - South Africa spec, 1,75" big ends
* AEG315 - 1275cc - Cooper S, EN40B forging, Nitrided, 1.625" dia. big ends, non-cross drilled
* AEG316 - 1275cc - early Cooper S MkI, EN40B forging, Nitrided, 1.625" dia. big ends, non-cross drilled
* AEG479 - 1275cc - Cooper S, EN40B forging, Nitrided, 1.625" dia. big ends, cross drilled
* AEG480 - 1275cc - Cooper S, EN40B forging, Nitrided, 1.625" dia. big ends, cross drilled
* AEG623 - 1275cc - Cooper S MkIII, EN16T forging, Tuftrided, 1.625" dia. big ends
* AEG1392 - 1275cc - Cross drilled, wide thrust gap, small journals
* 12G1287 - 1275cc - Non-S, EN16T with 1.625" dia. big ends
* 12G1288 - 1275cc - Non-S, EN16T with 1.625" dia. big ends
* 12G1817 - 1275cc - n/a (verm. Clubman 1275GT)
* 12G1505* - 1275cc - Non-S, EN16T with 1.75" dia. big ends
* 12G1683 - 1275cc - 12G1505 forging, non-S, EN16T with 1.75" dia. big ends, Tuftrided
* CAM6581** - 1275cc - Metro Turbo early (controversy if nitrided or not runing)
* CAM6232** - 1275cc - Rolled-fillet radius on bearing journals, A+ with 1.75" dia. big ends

Ans there are probably a hell of a lot more, especially from the early days.

Edited by Asphalt, 16 December 2009 - 08:17 PM.

[Guess-Works.com]

I suspect, the real question is

What's the difference between a turbo crank and any other A+ 1275 crank, and quite simply, with the exception of the MK1 Metro turbo crank, non-what-so-ever as they the MK2 on Metro turbo used the same crank as a 1.3 HLE metro.. and every other transverse A+ 1275 engine...

The MK1 metro turbo had either a (tuftrided or nitro-carbonised can't remember which ) crank but I believe still made of the same material.

You may want to read this...

http://www.turbomini...p...vt&tid=4724

[MarkGTT]

I suspect, the real question is

What's the difference between a turbo crank and any other A+ 1275 crank, and quite simply, with the exception of the MK1 Metro turbo crank, non-what-so-ever as they the MK2 on Metro turbo used the same crank as a 1.3 HLE metro.. and every other transverse A+ 1275 engine...

The MK1 metro turbo had either a (tuftrided or nitro-carbonised can't remember which ) crank but I believe still made of the same material.

You may want to read this...

http://www.turbomini...p...vt&tid=4724

yeah have read that link before

Thanks guys, Dan / guessworks you answers helped loads.

Basically i wanted to know if there was a differance between A+ cranks other than the mk1 metro turbo that i alraedy knew was *special*.. sorry should have worded my question better.

But your answers have helped my uderstand the castings / numbers.. even if the original question was a bit poor.