Matt@TYGA wrote:Never had this problem on the RS125 or 250, and it's the worse I've ever encountered on the NSR.

Pretty much everything is put back together with grease or oil or whatever is best for the job, but I just thought it'd be worth mentioning as there maybe a siezed motor or two out there that could have been saved.

Matt,

Can't agree with you on this any more. An air leak on the intake can definitly cause a top end sieze.

The hard part of this is I have seen this happen with brand new stuffers on the RS This is when I started setting the torque in them with a leak down tester already on them. I have even seen people use a sealant on these parts to make sure it's all good.

Also something important to remember when tightening this part down is the pattern in which you do the bolts. I think there is a diagram in the manual (possible even on this site) that has the pattern. Following this pattern, and not overtightening them down will help not bend the insulator.

Thanks
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Charles Gallant