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View Full Version : Yfz Bent Valves



motomanmike
06-22-2006, 07:55 PM
Have many of you had problems with the stock YFZ heads, valves bending. I fired my bike up last night and it trashed three of the intake valves. it looks as if the bucket that holds the shims down seized in the journal or something. Either way its in rough shape. I talked to Lauren at Duncan racing and he says he's not sure until he sees it if it can be fixed or not. I don't exactly know what option to take. Buy a new head and build one, new, or get a stock used head with valves or try to send this one to a machine shop to get it fixed. I want to get it back up and running asap What do you guys think?

1fst400
06-22-2006, 08:27 PM
I would buy an aftermaket head... or have yours all punched out.