Turn & Burn
Club Member
I’ve just finished a long evening in the garage carrying out sonic thickness checks the bore walls prior to buying pistons for a rebore. I guess I hoped I would have a block good for an 89mm piston (3mm wall thickness after boring) but I believe that’s a rare block these days. I have a few readings that wouldn’t support a 3mm wall thickness at 89mm and just a couple of marginals at 88.5mm, so it’s probably going to end up at 88mm, is the 88.5 too risky?
I’ve attached a pic of the results, just wondering if anyone else has similar data and what size you ended boring to?
I’ve attached a pic of the results, just wondering if anyone else has similar data and what size you ended boring to?