HEADS UP!!!

Site upgrade in progress... Core site functions are working, but some non-critical features/functions will be temporarily unavailable while we work to restore them over the next couple of weeks.

Please post any bugs you encounter, but before you do, check to see if it's already listed.

Thanks for your patience while we work to improve the community.

Sign in to follow this  
Followers 0
bru21

Wr400f 00 Cam timing question

3 posts in this topic

Hi all,

I just purchased a 00 wr400 after regretting selling my 01. the bike builds power too fast to maintain traction or even wheelie. There is little torque then wheelspin. the bike is fitted with vortex ignition. I am yet to check cam timing but presuming yz spec. The top end is good, and the only other drama is it is jetted too rich - no chocke to start and hot start out 10 kicks with decomp and then it will fire. some black smoke too (very little).

my 01 wr400 was yz cam timed and was great fun and real easy to pull loooooong wheelies etc. But I no longer ride on the beach (hard wet sand)

As i am doing loose rocky hills a lot etc I was wondering if it is possible to go one tooth past WR std timing to make it smoother still. eg rather than wr to yz, go from wr in the opposite direction one tooth.

cheers bru

Share this post


Link to post
Share on other sites

Just put it back to WR timing. If you go to WR timing +1 (what you want to do with the cam timing) it's gonna run like crap, if at all. The low end torque will be much better than with YZ timing and the jetting may work itself out. WR timing requires, in my experience, richer jetting that YZ timing.

Share this post


Link to post
Share on other sites

Thanks mate,

I looked at the timing last night and the inlet cam was out one tooth clockwise, that will be why its running so badly, wonder how long its been like that!

the jet was also a 48 should be a 42 (pilot), that will explain why its so rich down low and dieing when the fuel pump then way overfueled. the needle was in the 2nd position and was therefore more lean than the books 4 so i put it back. will get the 42 jet today. So I am aiming to go all back to std and make changes from there. I am about 20m above sea level

Can then ride it when i get my forks back from the tuners

cheers bru

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