03 WR450 -> YZ timing


3 replies to this topic
  • k69mj

Posted January 23, 2006 - 03:33 AM

#1

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

#2

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.

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  • k69mj

Posted January 23, 2006 - 04:07 AM

#3

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

#4

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




 
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