Originally Posted by DiabloADV
Pistons measure 93.3mm. Cylinders 93.7mm.
Book says R90/6 is 90mm. 100's pistons are 93.96mm (or bigger for overbores...).
So...what the heck do I have here...?
You had a 0.2mm gap all the way around? That seems high to me ... Both cylinders?
Not to be a jerk ... but are you sure you're reading your caliper right? If it is correct, then it's a WAY overbore on an R90 ... but I'll bet that it's a R100.set though.
Just tryin to help ...