Mini Cooper Register
2' is what you are looking for. 😛
A question for the experts: What size mains would a completely standard 1071 crank have?
And a 970 and a 1275. They also all have 1.625' big ends.
Is 40' the maximum grind on a 1071 crank ?
No. In the past you could get 060' shells and someone in America was prepared to use 080' ones. I have never seen any of those in this country. Don't forget that the nitrided layer has been removed by the even only 020' regrind. The nitriding provides a hard, wear-resistant surface. The crank would still work OK but the smaller the diameter the weaker it is.
In '67 BMC were quoting maximums as 40' on Minis and Coopers but only 20' on the S. Obviously, at the time, replacements weren't a problem. As Nick says 60' and 80' have been available but it depends what you're using the engine for, I can't see any great problem for normal day to day driving but that wasn't the manufacturers original intention.
Thanks fellahs 😎
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