YZ exhaust question

3 replies to this topic
  • drtbk4ever

Posted June 06, 2007 - 03:20 PM


Hi guys, I need some input.

I picked up a used YZ exhaust for my WR. I installed it on the weekend and fired up the bike. Well I think I was getting exhaust leaking from the connection to the header, but I couldn't tell for sure cause the whole YZ pipe was smokin. The previous owner said it melted some plastic on his bike and I think that was what was smokin. But I was afraid there was more to it than that so I took the exhaust off afraid it may melt my airbox, sidepanel, etc etc.

Here are some images of the YZ exhaust. Would a new gasket (right name?) solve the leaking exhaust?

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Here is the melted plastic on the pipe. Would it be safe to run this on the bike till it all burns off or should I try to remove the goo?

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Or should I just toss the YZ pipe?


  • bg10459

Posted June 06, 2007 - 05:19 PM


That gasket looks like crap. I'd replace it and clean / re-pack the can. I'd also get as much of the melted plastic off as possible. Then re-jet for the new pipe because you'll probably be a little lean.

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  • Mutu

Posted June 06, 2007 - 07:56 PM


Yeah, a new gasket and it should be fine.

  • drtbk4ever

Posted June 07, 2007 - 01:58 PM


Yeah, a new gasket and it should be fine.

OK that is what I thought. I have seen "exhaust pipe silicone" in the magazines, should I pick up some of that too, or is it not necessary?

Now do I need to be concerned that this pipe will melt any of the plastics on my WR? I imagine if jetted properly, the pipe shouldn't be any warmer than the stocker.


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