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icemachines

Engine rebuild advice 04 yz450f

2 posts in this topic

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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