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The chance of new crankshafts and rod etc

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The chance of new crankshafts and rod etc
Stuart Giles Offline
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Joined: Aug 2017 Posts: 741 Threads: 8
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Location: N W Kent
#77
22-05-2021, 03:57 PM
(22-05-2021, 01:48 PM)Tony Betts Wrote: at the same time as myself,

one of the mini race companies were also after new cranks.

the mini was originally EN16, they went forward with the 4140 nitrided.

tony.

All the Run of the mill BMC 'A' Series Cranks were forged EN16 AFAIK. But the Cooper "S" cranks were always EN40 Nitrided. Probably the main reason that the classic mini guys would be keen on that spec. The EN16 cranks were/are OK for a Sunday afternoon drive but don't seem to live very long in a tuned motor. This crank Magnafluxed good when the motor was built -admittedly a few years before this occurrence:
[Image: 35283953632_17324587ed_z.jpg]
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RE: The chance of new crankshafts and rod etc - by Stuart Giles - 22-05-2021, 03:57 PM

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