Concrete Posted April 12, 2011 Report Posted April 12, 2011 I just bought a set of 400cc cub cylinders before I knew my crank went out. So now I ordered a 4 mill crank and what I'm asking is would this be a true 421 cub? I mean that's all a 421 is right, by adding the 4 mill? Any insight would be greatly appreciated. Quote
Phelps Posted April 12, 2011 Report Posted April 12, 2011 if you ordered a 4mil 58mm crank for a 54mm cub you screwed up. there is a 392 cub which is a 68mm bore and stock stroke and a 396 that uses a +4 stroke with a standard 110 rod, or a 115 rod. might want to see what your cylinders was setup for before you just buy parts. Quote
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