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Re: Timing question

September 7 2017 at 7:07 AM
CraigWilson  (Login 6823)

Response to Timing question

Hi Paul, I knew you would be there for me.
I have been timing off the mark on the harmonic balancer but I have seen the dimple on the flywheel, it just won't run there.
I started with an aftermarket HEI distributor that has a mechanical tach drive. Just to see if that's where the problem was I replaced that distributor with a brand new ACCEL HEI distributor that I had on the shelf. Both are mechanical non-vacuum style.
Motor is pre-vortec style.

I have checked cam timing and TDC is spot-on the zero mark on the balancer.
I have pulled and reset the distributor multiple times checking the firing order each time.
I even went so far as to secure the flyweights under the cap to make sure I didn't have weak springs giving premature advance.
I contemplated the possibility that maybe the engine is not an opposite rotation engine but if that were the case it would only run 180 degrees off and that's just not the case. It only will run at a rock solid 30 degrees before.
I am hoping to find time to call the engine supplier today, maybe they have an answer.
Either way I'm stumped, I've never seen this before.

Craig Wilson

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