2007 YZ450F Header glowing almost instantly

7 replies to this topic
  • crfdvs

Posted November 12, 2008 - 06:46 PM


Hi there, i just got a 07 YZ 450f, and i started it up ( at night ) and the pipe was glowing red out almost instantly. I held my hand at the muffler and it seeamed real hot, is that normal? it was also around -5 out, i rode it up and down the street a couple times and it seemed to cool down from the cool air. I was wondering if i had to rejet it or??? let me know ! anything i should get done from stock to make the bike more reliable? thanks

  • grayracer513

Posted November 12, 2008 - 06:58 PM


"TT Newbie" :moon:

Yep, it's normal. BTW, welcome to Thumper Talk. You just stepped in it. :thumbsup:



Posted Image

  • 642MX

Posted November 12, 2008 - 07:24 PM


Well its been over 4 months since I've visited TT and it feels like I've never left.....

  • grayracer513

Posted November 12, 2008 - 09:25 PM


Some things never change.

Visit the ThumperTalk Store for the lowest prices on motorcycle / ATV parts and accessories - Guaranteed
  • Dirt Hokie

Posted November 13, 2008 - 09:54 AM


A lockwood hiller valveless pulse jet

I always wanted to make one of those

  • grayracer513

Posted November 13, 2008 - 11:52 AM


A lockwood hiller valveless pulse jet

I always wanted to make one of those

¿¿:thumbsup: ??

Wadd'ya mean? It's a shopping cart. :moon:

  • 642MX

Posted November 13, 2008 - 12:45 PM


Its a shopping cart with a hot pipe. :thumbsup:

  • Wyatt

Posted November 13, 2008 - 01:09 PM


Whatever it is, it looks lean to me.......

Related Content


Snake pit oct 30th by The Anvil

Dirt Bike   Dirt Bike Regional Discussion   California
  • Hot  293 replies

yz250x vs 450 4t comparisons (preferably desert riding) needed by JakeNorthrupYZ450F

Dirt Bike   Make / Model Specific   Yamaha   Yamaha 2-Stroke
  • 9 replies

2016 YZ450 by CaptainKnobby

Dirt Bike   Dirt Bike Technical Forums   Suspension
  • Hot  59 replies

First Hare scramble tips by dhend8

Dirt Bike   General Dirt Bike Forums   General Dirt Bike Discussion
  • Hot  33 replies

James Stewart back on a YZ450F by YamaLink

Dirt Bike   Special Interest Forums   Pro Racing
  • Hot  47 replies

Join Our Community!

Even if you don't want to post, registered members get access to tools that make finding & following the good stuff easier.

If you enjoyed reading about "" here in the ThumperTalk archive, you'll LOVE our community. Come join ThumperTalk today!

The views and opinions expressed on this page are strictly those of the author, and have not been reviewed or approved by ThumperTalk.