Valve wierdness

[979roadrunner]

Just curious if anyone else has had this happen; I had just replaced the shim on intake one (8 valve) and measured the clearance with a .002 feeler, and since it felt loose, I opened the .003 feeler, and no, it didn't fit.
Curious because it had seemed so loose, I got the .002 back out, and it doesn't fit!
Pulled out the .003, rolled the engine over a couple more times, .003 is a tight fit. Switch to .002, no fit.
evry time I rolled the engine over, I got a tight .003 or sorta loose .002, then if I waited a few seconds (long enough to change feelers, for exsample,) the clearance would go away.
too wierd.

 

[Nessism]

Sounds like the shim is lifting in the bucket a little when the valve is on the base circle. I wouldn't worry about it, but you might want to move down one shim size on the valve in question (increase the clearance). The shims are numbered of course, but they also vary some themselves so a micrometer helps if you are anal about hand selecting the best possible shim for any given valve. Of course you will need a handful of shims for each given size other wise you are stuck with what ever you have on hand.

Good luck

 

[rapidray]

When in doubt with a shim valve head, err to the LOOSE side! Ray.

 

[979roadrunner]

Well, we're talking a loose .002 (metric equivelant .051) or a tight .003 (metric equivelant .076) so I'm not realy worried about it being too tight, I just wondered if this was something others had experienced.
I pretty much arrived at the conclusion Nessism did, as thi is #1 intake and, since the bike is on the sidestand, it's an oil bath is there.
Thanks for you replies.
Art