First Generation Firebird-L Mailing List
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Just to clarify a bit, I mount the dial indicator on the deck, but I only use
it to measure the cam lift. I install a solid lifter and a pushrod, then
configure the dial indicator to measure the rise of the top of the pushrod. You
can measure cam lift with the head installed by using a metal rod to mount the
dial indicator. The rod needs to be threaded on one end to screw into a valve
cover screw hole. With the heads off, you could do the same thing with a head
bolt hole and not use the magnetic base, but the magnetic base is quick and
easy and I since don't have a lathe that's how I go about it. The piston stop
just helps you to accurately locate tdc.
Sheen, one or two other things you can do after degreeing the cam. Set your
crank at tdc and carefully remove the degree wheel. Slip the front cover on and
the harmonic damper and check to see if your timing marks are correctly aligned
showing a match at zero degrees. You can then remove the damper, put the degree
wheel back on at zero degrees, and turn the crank until you have located the
maximum point of total ignition timing (I think I went to 32 degrees, but "your
mileage may vary"). Then slip the damper back on and mark it for your desired
total timing. I cut a very shallow notch and painted it so it is easy to find
with the engine running fast enough to have all the mechanical advance in. That
makes it very simple to set total timing after you get it running.
David
----- Original Message ----
From: Larry *.* <[EMAIL PROTECTED]>
I think he meant you could set a dial indicator against the bare deck using a
magnetic base support. The dial indicator has a very low tension spring
against a delicate feeler that won't mark the piston. But there can't be heads
in the way.
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