Help, Valve Clearances Spreadsheet WR400

3 replies to this topic
  • BigBlueWR

Posted December 12, 2003 - 07:44 PM


Hey guys.

I'm gonna put in my '03 Auto Decomp Cam in the morning, but I forgot my mannual (4 hours away from my parents place).

Could someone please scan the page in the mannual that has the chart with the different shim sizes and email it to me or post it here. I know it's alot to ask.....

My bike is a '99 WR400 if it makes a difference.

Thanks a million :)

  • BigBlueWR

Posted December 12, 2003 - 07:49 PM


I just found it on Motomans site.

Are the specs the same for a WR400 as a YZF426 ?

If so I'm set.

Thanks again. :)

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

Posted December 12, 2003 - 08:16 PM


Okay, I found what I need, but the

YZF426 Exhaust valve clearance is .20-.25 mm
WR400 Exhaust valve clearance is .25-.30 mm

So should I just shoot for a .25mm with the new '03 YZF450 cam or what?

  • steveracer

Posted December 13, 2003 - 10:59 AM


I would go with what it says for the wr because thats the motor that you are putting the cam in, to achieve the proper piston to valve clearance.


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.