Engine rebuild advice 04 yz450f

1 reply to this topic
  • icemachines

Posted February 20, 2006 - 07:04 PM


While Ice Racing this weekend I seized my engine. Currently findings are a valve broke and mashed up the head and the remaining 4 valves, a scratched up cylinder, a hole through the piston which is seized at the bottom of the stoke.
Haven't had time to split the case yet to see what else I'll find.

Question is: Who do you recommend for rebuilt heads, valve and cylinder brands, and possibly crankshaft. Recommendations of a porting/oversize kits while keeping the stock carb would be great.

Still a little unsure and the reason of this nightmare but I would really like to make sure she stay's together. :thumbsup:

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  • kid on a 426

Posted February 20, 2006 - 09:26 PM


wow thats sounds pretty bad um well for the big bore u should try maybe athena

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