Valve Adjustment: Cylinder head removed

Multitard · #1 (**permalink**) 03-16-2010, 01:40 AM

Well, I've adjusted valves on the bike before, this time I have the cylinder heads off, should be easier right?

Well, I'm having a hard time figuring out which rotation is TDC since there is no piston to work with. I should line up the cam with the mark on the head, then adjust, but the vertical cylinder doesn't want to cooperate. Do i need some sort of stay on the cam?

Thanks.

Ian900 now in BC · #2 (**permalink**) 03-16-2010, 03:31 AM

rotate the cam so there is no pressure on the valve,ie the follower is not on the lobe. You can feel the pressure in your hand when you rotate the cam and cam lobe starts to lift the follower

Multitard · #3 (**permalink**) 03-16-2010, 02:50 PM

thanks, got it, I knew it was simple, just over thinking things

TomTom · #4 (**permalink**) 03-25-2010, 08:44 PM

Its much easier off and now you can learn how it works, at least that was what made my brain understand the desmo-thing being used to spring heads.

Take your time and unmount the shims if you havent, off the bike you cant really go wrong. Depends on where you are willing to go, you can now take valves out and check your valve guides aswell.

I do the closers zero, then I rotate the cam for the full lobe to see how much it binds.
The same applies for intakes, you dont want much under 0,10mm but if it gets 0,08mm at a couple of degrees, no worries.