Whoooo done did it

Had a couple of days off so decided to rebuild the top end of my WR 400 (2000)

new timing chain, 420 cylinder and piston, hotcams and yz header.

Just got her running and man do I like that auto de-compression. Easy starting now. Jetting stayed the same just had to turn it 1/4 turn on the idle and all is well.

I am stoked, can't wait to go on a good ride now. Feels like a new bike, can't quite get on it hard yet but break in should not take too long.

Oh and don't drop the half moon valve cover clip down the timing chain into the case. Creates a wee bit of a cussing storm.

Had a couple of days off so decided to rebuild the top end of my WR 400 (2000)

new timing chain, 420 cylinder and piston, hotcams and yz header.

Just got her running and man do I like that auto de-compression. Easy starting now. Jetting stayed the same just had to turn it 1/4 turn on the idle and all is well.

I am stoked, can't wait to go on a good ride now. Feels like a new bike, can't quite get on it hard yet but break in should not take too long.

Oh and don't drop the half moon valve cover clip down the timing chain into the case. Creates a wee bit of a cussing storm.

IMHO, you need to get on it hard, to seat the rings. Just do it in cycles.

Flame suit on.:thumbsup:

I can't believe you didn't have to change jet after the increase in cc's

I might have been a little rich prior. Although it ran great. Time will tell, but so far it runs good. Just the idle screw need a little more.

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