valve clearance readings/noise solved
Posted April 22, 2005 - 07:31 PM
As an aside, I had that sorta annoying noise coming from "somewhere down there". I took the clutch cover off and found a strange little flaw in the side case where the material had a raised spot, and the clutch basket was just so slightly rubbing up against this spot. A few minutes with a dies grinder and Viola, no more nose. -Amen-
Thanks as usual,
Posted April 22, 2005 - 08:20 PM
Posted April 23, 2005 - 05:51 AM
You are correct..... .15mm ~ .20mm (.0059 ~.0079 in) for the intake and
.25mm ~ .30 mm (.0098 ~ .0118 in) on the exhaust. Taken right out of my '99 WR400 manual.
So, .23 and .13mm according to those specs are both a scosch tight no??? Again, this is a 99, and readings were cold.
Please advise folks,
Posted April 23, 2005 - 06:54 AM
It's not very hard and only took about 2 hours.
If I had to do it again today it would only take me about an hour.
I have heard where some peaple take a little material off their shims with emery clouth. You might want to try that if finding shims is a problem.
Posted April 23, 2005 - 03:31 PM
0.125 mm is half way between 0.10 and 0.15 mm, so 0.13 is 0.005 on the 'slack' side. At any rate, 0.13 mm intake clearance is good. If the actual shim # is a multiple of 0.05 mm, say 0.190 mm, you could either go to a replacement #195 shim (1.95 mm) and end up tight at 0.08 mm, or go with a replacement #185 shim (1.85 mm) for a loose 0.18 mm clearance. Some original shims are not multiples of 0.05 mm and can sometimes be switched around for minute adjustments.
I used emery cloth (and a micrometer) to thin a shim, but it wasn't easy as it's very hard metal.
Posted April 23, 2005 - 05:30 PM
Posted April 24, 2005 - 06:54 AM
Posted April 26, 2005 - 07:18 AM