Thread: droppin a valve !!

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was just out for th afternoon at a the local dyno shop, guy we knew brought in a 540 merlin with dart heads on alcy. Bought it used from another racer
4th pull made 893 hp at 6500 rpm, nice big power , 5th pull they changed the plugs and nothig else and blew an exaust valve right out of the back of the shop, happy days, pulled the head off and it caused amazingly little damage needs a piston marked up the head etc and bore some but still for how it came apart not too bad. such is the risk of buying a used race engine

he was lucky. i dropped a valve through an engine at 6000 rpm a few years ago. it sure made little pieces of junk out of a lot of engine parts.

dam that sucks

I've had Ford FE's suck a piece of exhaust valve into the intake and go back and forth, taking out all four pistons on that half of the manifold, and both heads as well. Your friend was lucky!

i cant believe it got out the back end ,i picked up a smokin piece about 15 ft behing the rear exaust outlet , think the valve spings were maybe a little weak and caught the piston and blammo

i watched a guy here kick a rod out of his brand new rehr morrision 632 big block it was bad.