My Valve Clearances

I'm doing a top end in my 06 yz450f 67hrs and my valve clearance is INT .15 .15 .13 Ex .20 .20 should I leave them since there still in spec or get them closer to the middle of spec?

Just leave them be.

I would also leave them,only worth adjusting when out of specs.

My clearances are .10-.15 int & .20- .25 ex Im gonna bring the exhaust closer to .25 since its almst out of range and my 1 intake to match the other 2 at .15

Don't bother them. They're all in spec.

The whole range of .10-.15mm or .20-.25mm is only a .002" spread from tight to loose. Why sweat over .001" if it's already where it belongs?

Don't bother them. They're all in spec.

The whole range of .10-.15mm or .20-.25mm is only a .002" spread from tight to loose. Why sweat over .001" if it's already where it belongs?

Right On, I'll just leave them alone then, Just figure while I have the head off for the piston and rings.

Thanks Guys

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