what pistons besides wiseco? at 8200 miles dropped valves in both cylinders at 6000 rpm/anybody use andrews cams?
what pistons besides wiseco? at 8200 miles dropped valves in both cylinders at 6000 rpm/anybody use andrews cams?
I use CP pistons and Cat 3 cams from NRHS
An extremely rare catastrophic failure... and simultaneously in 2 pistons?
Whats the whole story sandman? Your use/abuse would dictate what new engine to build that will last, because stock obviously ain't enough for you
on a nice road nice day engine at 6000 rpm the engine just made a loud pop sound not a bang like a car engine when a timing belt breaks and a valve slams into a piston. pulled in the clutch and coasted to a stop. when i tried to start it it spun with no compression /no rods out of the cases if a valve spring breaks the keeper comes out the valve drops and hits the piston .the engine is out so monday the top end comes off and i will let you know /but when i did a compression check both cylinders were dead how or why? not a clue.
Post up some pics of the carnage
I agree scorpion king. Seems like a bit of info is missing...
How do valves just "fall" into the cylinder? Ive never heard of this on any bike or car/truck.
Maybe he's one of those people who like to rev until it bumps off the limiter in neutral for an unlimited amount of time.