hot pipe?

6 replies to this topic
  • yz426-450

Posted June 13, 2005 - 05:22 PM


I have a yz426 with a 450 bigbore. One thing i noticed is the pipe will glow right where it bolts up to the engine if the bike is idle for too long. I'm running 1 gal. of 110 and 4 gal. of 93. i don't know if the fuel is just too hot or if something is wrong.


  • 02YZ426

Posted June 13, 2005 - 05:38 PM


They all do that. I use the pipe on my 426 to light my smokes when Im out riding. :)

  • tmonteton

Posted June 13, 2005 - 06:37 PM


it shouldnt glow too much - thats usually a sign that the jetting is too lean and thats not a good thing for the engine. Play around with the jetting and richen it up a bit, the glow should almost go away and the bike will have more power as well!

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  • tnl

Posted June 13, 2005 - 06:50 PM


Do a search on that subject and you'll find all the info. you will need.

  • grayracer513

Posted June 13, 2005 - 08:04 PM


Did you know that the timing retards in neutral, too?

Every single stinkin' one of these bikes will run the header at least cherry red if left idle more than a minute or so. In about another 30 seconds, they'll boil over, too. 'Just the way it is.

  • Slowmotion426

Posted June 13, 2005 - 08:05 PM


It looks cool at night though.

  • yz426-450

Posted June 13, 2005 - 08:16 PM


Thanks for clearing that up :)

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