Owen McKeown wrote:
> I have 2 old crankshafts (in original packing).
>
> I think first might be a 970 S item. Cast no is AEG171 EN40B and second
> might be 1100 crank. Cast No 12A298
>
> Any experts on old BMC Part nos out there that can confirm?
Here are some places to look:
http://www.spridgetmania.com/web/like/y/item/C-AEG329/invDetail.cfm
http://new.minimania.com/nmm/Crankshaft___Standard_production_crank_id...ificati
The above site says:
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
12A298 997cc - Original Cooper crank
12A375 997cc - Cooper crank with oil feed hole for primary gear
12A595 998cc - Early EN16T spec
12A1451 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
AEG315 1275cc - Cooper S, EN40B forging, Nitrided, 1.625" dia. big
ends, non-cross drilled
AEG316 1275cc - Cooper S, 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, EN16T forging, Tuftrided, 1.625" dia. big ends
12G1287 1275cc - Non-S, EN16T with 1.625" dia. big ends
12G1288 1275cc - Non-S, EN16T with 1.625" dia. big ends
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
CAM6232* 1275cc - Rolled-fillet radius on bearing journals, A+ with
1.75" dia. big ends
So, according to the above list, your first number is the 1071 rather
than the 970 and your second number is the original 997 cc Cooper.
-RF
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