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
I use pistons/cylinders and Cat 3 cams from NRHS as well. Dan at NRHS is pretty awesome.Originally Posted by mike lowary
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.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
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.
I agree. Its either a one in a million shot of bad luck... or someone not being accurate of what happened. Maybe he meant both valves in one cylinder... or he meant 8000rpm instead of 6000.
Last edited by 34nineteen; 06-17-2020 at 04:21 PM.
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.
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