For Sale Wiseco piston kits 1-p8-165 for 250cc motor which is,0.80 over 1-p6-407 for a 175cc six fin cylinder, 0.60 over.1-p6-462 for a 125cc six fin cylinder, 0.60 over thx Lee....
Lee,
I bought a 1976 175 Cross Country with a locked up or frozen 7 fin 175 engine. What years had 6 or 7 fins. I assume the pin or compression height is different on a 6 fin compared to a 7 fin. Is one a better performer than the other? Ric Emmal is looking for a top end for the 1977 175 bottom end I got from Tony Friedel and I am assuming that it would require a 7 fin cylinder? OR are they interchangeable? If I wind up with a clyinder that would work with your piston, I would be interested in it. Mike
Michael R. Winter
I enjoy rebuilding and appreciating Pentons!
1974 250 HS Pentons-1980 KTM 250'S