Originally Posted by Butch.
does sound like a bent crank or maybe a conrod out of shape slightly try swapping a piston and rod into another bore and see if you get the same measurment that you did on the bore before you swapped them over...
Hi, A bent conrod will only alter the TDC and BDC hieght, not the stroke.
i might swap No1+2 and No3+4 around to see if Rods are the same length.
Originally Posted by Alg1k
Sounds like the crank is a bit bannnana like
Have you put a dti on the fly wheel end and checked for runout.
Also on removing the crank inspect the bearings for bruising on there sides.
I havent checked flywheel trueness, but will do in abit.
I think the crank bent, and to straighten it with a grind, has put the stroke out.???