valve shim history - update & corrections
Posted: Sun Aug 09, 2009 6:32 pm
While preparing for my 'Sunset Tour', where I pick a day and ride off into the sunset (but actually start that morning so I can really get somewhere), I'm checking my valve clearances and I also discovered my 'basement' notes from previous clearance jobs.
I bought a new 2006 KLR in late April 2006. It now has 17,500+ miles and seems to be my primary bike versus the '81 BMW R100, which gets about 3,000-4,000 miles of use per year too.
First thing you'll notice is that these clearance numbers aren't 'tight' - I'm an imperfect human. I'm shooting for 0.15-0.25mm on the exhausts and 0.10-0.20mm on the intakes.
First clearance check was July 2, 2007 @ 5,047 miles:
old-L-Ex 255mm shim w/ 0.178mm clearance
new-L-Ex 250mm shim w/ 0.228mm clearance - not actually measured
old-R-Ex 255mm shim w/ 0.178mm clearance
new-R-Ex 250mm shim w/ 0.228mm clearance - not actually measures
old-L-In 255mm shim w/ 0.102mm clearance
new-L-In 245mm shim w/ 0.202mm clearance - not actually measured
old-R-In 260mm shim w/ 0.102mm clearance
new-R-In 250mm shim w/ 0.202mm clearance - not actually measured
Second clearance check was March 22, 2008 @ 8,721 miles and I bought a metric feller gauge to check the final clearances (not initial clearances):
old-L-Ex 250mm shim w/ 0.203mm clearance
new-L-Ex 245mm shim w/ 0.220mm clearance - metric feeler gauge
old-R-Ex 250mm shim w/ 0.229mm clearance
new-R-Ex 250mm shim w/ 0.210mm clearance - metric feeler gauge
old-L-In 245mm shim w/ 0.178mm clearance
new-L-In 245mm shim w/ 0.170mm clearance - metric feeler gauge
old-R-In 250mm shim w/ 0.203mm clearnace
new-R-In 250mm shim w/ 0.170mm clearance - metric feeler gauge
Third clearance check was August 9, 2009 @ 17,500+ miles:
old-L-Ex 245mm shim w/ 0.190mm clearance - metric feeler gauge
new-L-Ex 245mm shim - will update when done
old-R-Ex 250mm shim w/ 0.200mm clearance - metric feeler gauge
new-R-Ex 245mm shim - will update when done
old-L-In 245mm shim w/ 0.190mm clearance - metric feeler gauge
new-L-In 245mm shim - will update when done
old-R-In 250mm shim w/ 0.190mm clearance - metric feeler gauge
new-R-In 250mm shim - will update when done
Everything seems to be heading in the right direction and no surprises. I should be able to go on an extended maintenance schedule after this one.
Don R100, A6F