Exhaust Burning Fender YZ426


8 replies to this topic
  • jmckinney

Posted October 25, 2005 - 03:47 PM

#1

I just replaced the stock exhaust pipe with a Whitbrothers Exhaust pipe on my 2000 YZ426. After a hard day of riding my fender was burned. Do any of you now if this is normal or is my jetting off. Thanks for the help Joey

  • SBRacing

Posted October 25, 2005 - 04:56 PM

#2

check your jetting you have to be running lean....

  • phat_450f

Posted October 25, 2005 - 04:57 PM

#3

how close is it to your fender.

  • fixxor

Posted October 25, 2005 - 05:55 PM

#4

I have this heatshield stuff on the inside of mine, was on there when i bought it...

Pic 1
Pic 2
Pic 3

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  • 00YZ426FMRCD

Posted October 25, 2005 - 08:03 PM

#5

Did your stock pipe ever burn your fender? If not it could be either the Jetting or the diameter of the pipe is maybe a little bigger. One last possibility is maybe the newer pipe isn't packed correctly...

  • sjwr450

Posted October 25, 2005 - 08:44 PM

#6

I'm assuming you have the White Bros with the plates? And it is burned out towards the end? I think those are a bad design. Every fender I have ever seen with that exhaust is burned.

  • Ga426owner

Posted October 26, 2005 - 12:35 PM

#7

I'm assuming you have the White Bros with the plates? And it is burned out towards the end? I think those are a bad design. Every fender I have ever seen with that exhaust is burned.


If it is the Eseries silencer with the plates - WB & Dennis Kirk sells a heat diffuser for this WB pipe that will keep the fender from getting scorched - I had one on my 02 WR426 :banghead:

  • teamtoxic

Posted October 26, 2005 - 03:02 PM

#8

Buy a roll of aluminum tape. Cut a piece off about 6 inches long and wrap it around the fender edge where the exhaust is burning it.

I know what you're talking about, I had a YZ426F with White Bros. E-Series exhaust and this solved my problem. My fender didn't get burn or discolor due to the exhaust in the 4 years I rode it.

If you check out "My Garage" I have a pic of the old 426 that shows what I'm talking about very clearly.

- Nick

  • 150 Fuelie

Posted October 27, 2005 - 09:52 AM

#9

I did the same thing as teamtoxic. People forget that the e-series shoots the exaust out of the discs not staright out the back. Lean or rich you will burn the fender.





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