Randall,
Can you explain the theory behind this for us? Is there a variation that
works for other cams?
Thanks,
Hugh Fader
>
> However, it's not hard to check cam timing (with the stock
> cam) with just
> the rocker cover removed. If you trust your TDC mark, it's
> even easier.
> Assuming the TDC mark is good :
>
> First turn the engine until #4 exhaust is just closing, and
> the crank is at
> TDC. Set the valve lash for #1 intake and exhaust to .050".
> You can stack
> multiple feeler gages together for this. It doesn't matter
> if the value is
> not exactly .050", as long as they are the same. Now turn
> the crank forward
> one full turn, coming back to TDC and stopping. You have to
> stop on the
> mark, you cannot turn the crank backwards (or the reading will be
> inaccurate). If you do pass the mark, turn it two full turns
> forward and
> stop on the mark. Now measure the lash on #1 intake and
> exhaust (without
> moving the crank). If they are equal, then the cam is
> perfectly timed. If
> the intake is tighter than the exhaust, the cam is retarded.
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