Does anybody here have access to pictures and dimensions of the new UCE piston.Im trying to sneak an order in for some gapless rings with our next shipment from the US.
The service manual for C5, G5 states that The piston dimensions are - 83.940 mm new min, and 83.970 mm new max The cylinder bore is 84.045 mm new min, and 84.075 new max.
Thank you Singh Ji.Very useful info.So the variation in bore to piston clearance can be 84.075-83.045=1.03 which is hard for me to digest when we work with +-1 Micron tolerances. And the difference between a lemon and a rocket is 30 microns.So worst case 1.03 on the excesive side and0.075 microns on the tight side.What is the clearance they recommend on a fresh rebore.
Thanks Ace. Let me know the exact numbers. When you can.I normally only use the gap less on the first ring after gas porting the piston and ceramic coating it.The ring pack on the new piston even the oil scraper looks pretty good. This new one just needs one gap-less at the top the rest of it looks pretty sorted to me.Ps: You get to meet and speak with Joe wow. He is has been my hero and inspiration for decades. I have collected almost every single articles of his over the years. He is one of my all time fav. gurus. Give him my fondest regards and a big Hi! from Bangalore.He was a Trail Blazer a guy who was the first to do something.A guy who was willing to share his knowledge. For which enthusiasts around the world love and respect him. If he ever plans an Indian holiday he doesn't have to worry about a place to stay or a bike to ride.