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Timing question
Posted by: crvr63 ()
Date: February 24, 2018 02:52PM

Trying to get this engine running better (66 110 hp in a 63 conv.) When I put the timing light on the running engine, the strobe lights up down near where the distributor is on the pulley as the mark passes, and not up near the timing marks. Set it to TDC on #1 and the alignment marks line up on the dist. I hope this makes sense. Moving the distributor so the timing marks line up kills the engine. Could I be a tooth or two off? Thanks.

Orange Park, Fl
63 Corvair Conv
67 Cutlass Conv
65 Buick Special Conv
"I'm a ragtop man !"

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Re: Timing question
Posted by: MattNall ()
Date: February 24, 2018 02:58PM

Check harmonic dampeners alignment marks







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Sea Mountain, between Charleston Harbor and Coos Bay! SW Oregon Coast
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..............................110-PG.................................................Webered-Turbo

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Re: Timing question
Posted by: crvr63 ()
Date: February 24, 2018 03:19PM

Mine only has a pulley there. Only mark is the timing notch. No balancer. I know I'm right on the engine year, maybe off on the hp. 95 maybe? If that even makes a difference.

Orange Park, Fl
63 Corvair Conv
67 Cutlass Conv
65 Buick Special Conv
"I'm a ragtop man !"

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Re: Timing question
Posted by: MattNall ()
Date: February 24, 2018 03:27PM

If this engine wasn't running perfect before it was pulled from the donor vehicle...

Check cam / crank timing marks....easy / simple in car... look in our FAQ's under engine.





MODERATOR
Sea Mountain, between Charleston Harbor and Coos Bay! SW Oregon Coast
Click HERE for My Website...Click HERE for My TechPages!
..............................110-PG.................................................Webered-Turbo

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Re: Timing question
Posted by: crvr63 ()
Date: February 24, 2018 03:50PM

Where might I access these FAQ's?

Orange Park, Fl
63 Corvair Conv
67 Cutlass Conv
65 Buick Special Conv
"I'm a ragtop man !"

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Re: Timing question
Posted by: MattNall ()
Date: February 24, 2018 04:11PM

Top of the Message list page!! A sticky....





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Sea Mountain, between Charleston Harbor and Coos Bay! SW Oregon Coast
Click HERE for My Website...Click HERE for My TechPages!
..............................110-PG.................................................Webered-Turbo

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Re: Timing question
Posted by: joelsplace ()
Date: February 24, 2018 06:54PM

Is the vacuum advance connected to constant our ported vacuum? If it has vacuum at idle it will advance a lot.
If the engine is running too fast the mechanical advance will come in also.

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Re: Timing question
Posted by: CoCoCo ()
Date: February 28, 2018 10:45PM

No matter which port you're using, are you checking with the vacuum disconnected? With ported vacuum you "shouldn't" have to do that, but not all carbs are set up properly and allow some vacuum at idle. That's another discussion...

Next, it sounds like you're seeing your timing mark is showing too much advance? When you're retarding the timing to get it down more towards the markings, you need to adjust the idle speed up to compensate.
In general, retarding the timing lowers the idle, while advancing the timing increased idle speed. So if you've adjusted your idle with the timing wrong, you have to do it all over again. It's just the nature of the beast and is not in any way exclusive to Corvair engines.

How does it run at this advanced timing level? Pretty good, or does it ping/knock/rattle when accelerating?

Good luck. But adjust the idle manually.

Paul

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Re: Timing question
Posted by: MattNall ()
Date: February 28, 2018 10:55PM

Balancing the carbs is also in our FAQ's under Fuel System





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Sea Mountain, between Charleston Harbor and Coos Bay! SW Oregon Coast
Click HERE for My Website...Click HERE for My TechPages!
..............................110-PG.................................................Webered-Turbo

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