Jetting help???

4 replies to this topic
  • MJ11

Posted August 24, 2006 - 11:32 AM


My buddy just put a Dr. D carbon pipe on his '06 YZ450F. It is now backfiring and shooting flames at low rpm's like a champ. We live in Phoenix so average altitude and hot dry temps. All MX...any suggestions would be great, and yes he is going to join TT. :thumbsup:


  • x2stroker

Posted August 24, 2006 - 11:39 AM


I would go with a 45 or 48 pilot and a 165 or 168 main.

Visit the ThumperTalk Store for the lowest prices on motorcycle / ATV parts and accessories - Guaranteed
  • barch88

Posted August 24, 2006 - 03:26 PM


Is his current jetting stock?

  • MJ11

Posted August 24, 2006 - 04:56 PM


Sorry, yes it is...should have said that.

  • Fastest1

Posted August 25, 2006 - 10:32 AM


Though I agree he should go up on the pilot jet size, has he ever adjusted the fuel screw? Go "out" in 1/4 turn increments.

Related Content


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
WR Camshaft Swap Info - last post by jamesm113

WR Camshaft Swap Info

  • 0 replies

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

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

Snake pit oct 30th by The Anvil

Dirt Bike   Dirt Bike Regional Discussion   California
  • Hot  293 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.