robosnow
New member
Well....the pistons were toasted after all. My compression tester was funky so I borrowed a buddies. 120 on the left and 90 on the right. It did scrape the walls a bit. The pistons are melted on the exhaust side. Time for a rebuild. Will need to bore out. Does anyone know of anybody selling stock GPX433 cylinders? I do not want to bore out and try to find these pistons, for I do not think they exist?
Thanks!!

Thanks!!