Limit on Valve Adjustment-WR426
Posted September 07, 2009 - 06:37 AM
Posted September 07, 2009 - 08:48 AM
Anyone know how much shimming adjustment on the valves can be done before valve replacement is needed? Now much I'm guessing with the thin Ti valve face coating.
here is the link to the motherload of links.
Read through those and it should answer your questions.
I know for the 250 you can get after market shim kits that range from 1.20mm to 3.5 mm in increments of 0.05 mm
Posted September 07, 2009 - 09:52 AM
When a valve job is done by a competent shop, the shims needed will be mid range, affording more than enough adjustment possibilities.
Posted September 07, 2009 - 01:37 PM
If you need to shim it and find soon after you need to shim again then it's time for new valves. These bikes rarely need much in the way of valve adjustment so if you suddenly find it going out of spec often it's a sure sign you've punched through the hard coating.
Posted September 07, 2009 - 03:11 PM
Guess I'd better, sigh, order a valve and a head gasket. Do the seats in the WR hold up pretty well or do they typically need cleaning up a little before installing new valves?
Posted September 07, 2009 - 05:12 PM
Posted September 08, 2009 - 05:37 AM
Why replace the seals? Are they a weak point on the WR? I have a 94 KLX with at least 50k miles and probably more that has never had the seals replaced during a dozen or more intake valve replacements with no oil loss between changes.
Posted September 08, 2009 - 08:01 AM
Sort of like taking a shower and not bothering to wash your big toe. You got all wet and soapy, might as well finish the job.