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Timing question . 76 350 Ci automatic

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Old 06-17-2019, 02:05 PM
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Paul Girnus
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Default Timing question . 76 350 Ci automatic

Guys
I just got my car running first test drive . The was running rich . When I checked the timing the mark on the balancer is lighting up way above the marks on the timing cover . I moved the distributor to get the Marks closer the car almost died . So I timed it by ear . It's running better however the mark is way above the timing cover hash marks . Does this mean someone stabbed the distributor a tooth off . I guess this means I need to remove spark plug at number 1 . Bring up to tdc. Then check the distributor ? Thanks for any suggestions
Old 06-17-2019, 02:11 PM
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1Hotrodz
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You are correct. There should be a notch in the base of the Dist. indicating number 1 firing position. Or you could look at the Dist cap.
Old 06-17-2019, 04:01 PM
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lars
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The distributor being "one tooth off" has no effect at all on timing - the timing can be correctly set no matter what clocking position the distributor is installed - it can be "off" one tooth or 10 teeth, and the engine can still be correctly timed with no problem - it's a cosmetic clocking issue only. If you left the vacuum advance hooked up when you checked the timing, the timing mark will be about 30 degrees beyond the timing plate - that's normal. Initial timing with vacuum disconnected should be in the mid-teens. If the engine won't idle with initial timing in the mid-teens (with vac advance disconnected), you need to do an accurate TDC verification to assure that your balancer has not slipped. This needs to be done accurately with a piston stop - not just visually verifying the piston near TDC.

Lars
Old 06-17-2019, 04:16 PM
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Paul Girnus
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Default How about the balancer?

Originally Posted by lars
The distributor being "one tooth off" has no effect at all on timing - the timing can be correctly set no matter what clocking position the distributor is installed - it can be "off" one tooth or 10 teeth, and the engine can still be correctly timed with no problem - it's a cosmetic clocking issue only. If you left the vacuum advance hooked up when you checked the timing, the timing mark will be about 30 degrees beyond the timing plate - that's normal. Initial timing with vacuum disconnected should be in the mid-teens. If the engine won't idle with initial timing in the mid-teens (with vac advance disconnected), you need to do an accurate TDC verification to assure that your balancer has not slipped. This needs to be done accurately with a piston stop - not just visually verifying the piston near TDC.

Lars


Lars
how about the harmonic balancer? I've am suspecting it may have been changed . I have heard that some are marked at12 o'clock and others like mine more to one side at 1 o'clock ? Should I just put the car at TDC and mark the balancer on the "0" on the timing marks?
Old 06-17-2019, 04:33 PM
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lars
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No - as noted, you need to do a TDC verification. If you don't know how to do this, simply drop me an e-mail request for my "TDC Verification" paper - it has complete instructions. Once you have verified and marked TDC, you can correctly set your timing as outlined in my timing paper. Let me know if you need a copy of that, too. You might also want a copy of my "HEI Distributor Installation" paper to make sure your distributor is correctly installed and clocked.

Lars
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Last edited by lars; 06-17-2019 at 04:35 PM.

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