Sign in to follow this  
Followers 0
wrkaholic

Does WR426F have the same intake and exhaust cams as the YZ426F

3 posts in this topic

Guys, quick question.

Does my '02 WR426F have the same intake and exhaust cams as the YX426F? I just did the YZ timing change and I am wondering if the exhaust cam is the same as the YZ.

So, in conclusion, with the grey wire cut and YZ timing the only difference between the YZ motor is the heavier fly wheel , right?? Thanks for any feedback.

Share this post


Link to post
Share on other sites

Guys, quick question.

Does my '02 WR426F have the same intake and exhaust cams as the YX426F? I just did the YZ timing change and I am wondering if the exhaust cam is the same as the YZ.

So, in conclusion, with the grey wire cut and YZ timing the only difference between the YZ motor is the heavier fly wheel , right?? Thanks for any feedback.

Well, the intake cams are identical, and by all reports the exhaust cam is also, but the gear is pressed on in such a way as the timing is exactly one tooth different.

Provided you uncork/unstop/uncover and have YZ jetting then yes, you have a YZ motor w/ a flywheel weight in your WR.

Share this post


Link to post
Share on other sites

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!


Register a new account

Sign in

Already have an account? Sign in here.


Sign In Now
Sign in to follow this  
Followers 0