dunno how much you're rotating the crank to achieve the largest gap, but i would think largish rotation would be needed as at TDC compression valve lifter is probably* at centre of base circle of the cam. lift would not occur for several degrees.
*not actually checked this, but it's true for Ducati's & others.
cookie
----- Original Message ----- From: "Keith Ruff" <klru-@fcc.net> To: <Loopfram-@topica.com> Sent: Saturday, July 27, 2002 12:53 PM Subject: RE: Valve Adjust Question
BTW, the way I found the point of the largest gap was by holding the feeler guage against the valve/rocker arm and rotated the engine around TDC until I got a gap/maximum gap, then used that point for adjustment to spec.
Keith Ruff 71 Police Ambassador - NJ
Keith Ruff wrote:
I did this and when the piston was at it's highest point (closest to the
spark plus) the rocker arms would shift from one coming down to the other coming up, but would require me to tweak the stroke a bit to get the gap to open up so I could check and adjust the gap. For some reason, the left side took more work to make this happen as the intake valve stayed tight until I backed out the piston a bit from TDC. I'm waiting for a new cap and rotor to arrive, hoping it will be here today,
and am running out to get new plugs. I have installed a new condenser, new wires, and new points - gapped them w/o a problem. I guess I'll get
it all back together and see how she runs. If too noisy, I'll shut down
and try again. Don't know why a simple valve adjust is giving me problems....
Keith Ruff 71 Police Ambassador - NJ
Martin Cooke wrote:
to find tdc compression, remove plugs turn engine over with your
finger
in plug hole, when you feel pressure that's the compression stroke. continue turning until piston is at tdc. that is where to adjust
valves.
cookie ----- Original Message ----- From: Greg Hopkins To: Loopfram-@topica.com Sent: Saturday, July 27, 2002 4:48 AM Subject: Re: Valve Adjust Question
The piston has to be at the TDC position on the compression stroke,
then
the exact point of adjustment may vary by a fe degrees according to
cam
and lifter wear. The way to find the exact position is to go to tdc
and
set th clearence, Then move the crank back a little and check it
again.
If it changes then re-adjust and then move it back the other way and look for a different reading . The point you are looking for is the
area
around TDC with the biggest clearence, remember to do this with a