Engine rebuild

2 replies to this topic
  • justbackitin

Posted May 20, 2009 - 06:54 PM


Well I have a solid 3 years of street riding and ice racing (~25 000km) on my 06 450. I've decided it would be best to replace some things before they let go. Namely the crank and valves. I have my eye on a complete wiseco crank kit and a set of kibblewhite ss valves. The piston was replaced last fall. Are there any high wear items I should replace while I have the cases apart? Any suggestions would be really helpful.

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  • matt4x4

Posted May 22, 2009 - 04:45 AM


I'd do the waterpump shaft and seals while it's all apart, check all your gears make sure the shift forks and dogs aren't wearing. Basically just give everything a good once over to make sure you're only putting good parts back in.
Definitely do your timing chain.

nothing else really - but if you're changing to SS valves, you also have to change the valve springs and should do the seats.

  • HTElectrical

Posted May 22, 2009 - 04:51 AM


From what I have read and been told it is better to use the OEM valves, crank, piston etc.... Yamaha's parts are suppose to hold up better.


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