03 WR450 -> YZ timing

3 replies to this topic
  • k69mj

Posted January 23, 2006 - 03:33 AM


I would like to try the YZ timing on my WR. Should I replace the WR cam with a YZ cam ? Or should I just rotate the cam ? People here are saying that you need to replace the cam.

The part catalogue (http://www.yamaha-mo...parts/home.aspx)
lists the same part number (5TA-12170-00-00) for '03 YZ450 and WR450.

  • Matty05

Posted January 23, 2006 - 03:51 AM


yes, replace the cam! you cant rotate it because of the autodecomp.
It is the exhaust cam that is different!!!!!

Buy a hotcams cam, they are cheap and the gains are better.

Visit the ThumperTalk Store for the lowest prices on motorcycle / ATV parts and accessories - Guaranteed
  • k69mj

Posted January 23, 2006 - 04:07 AM


My mistake :thumbsup: , I was looking the intake cam instead of the exhaust cam.
Anyone tried to dissasemble the autodecompression mechanism and grind the pin down (or replace) that sticks out ?

  • Matty05

Posted January 23, 2006 - 04:15 AM


no.... you can get your cams repressed if you want to pay big bucks....
get a new cam.


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.