car timing has gone crazy....why????????? - Team Camaro Tech
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post #1 of 12 (permalink) Old Sep 16th, 04, 07:54 AM Thread Starter
 
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my car has flipped out, I set the timing the other week at 36 degrees initial and the car cranked perfect for about two days then it wouldn't crank at all. It cranked perfect the other morning, I drove to the inspection station then it would not recrank so I had to bump the timing way up to get it to crank. When I got home I put the light on it and it said the timing was at 60 degres . I reset it to 36 degrees and it cranked great 5 or 6 times then it wouldn't crank even popped through the exhaust.

the car has a MSD pro billet distributor, MSD 6al and a new fluidampr balancer


HELP
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post #2 of 12 (permalink) Old Sep 16th, 04, 09:40 AM
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36 initial is a LOT of timing; do you mean total? Also, if you have too much initial it may turn over fine when cold but the warmer it gets the less it will want to crank. You mentioned you had to bump the timing way up to get it to crank, but that should have made it worse. Reducing the timing would be the way to go.

I usually shoot for 12-16 degrees initial with around 34-36 total, but that can completely change depending on the engine combo.

Jody


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post #3 of 12 (permalink) Old Sep 16th, 04, 11:23 AM Thread Starter
 
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that makes since but what confuses me the car ran great for a year at 36 initial and 50 total and just started flipping out lately
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post #4 of 12 (permalink) Old Sep 16th, 04, 11:31 AM Thread Starter
 
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and before people start freaking out I know 36 and 50 is wayyyyy too high but thats where the engine builder set it and the car ran great there (95 mph in the 1/8th, it had to be running pretty good)
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post #5 of 12 (permalink) Old Sep 16th, 04, 11:33 AM
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My guess to explain the 36/50 is your timing mark is off. From there only having 14 degs of mechanical advance (50-36=14) tells me your dist has been played with. The other symptoms you describe make me think you have thrown the advance springs or something in the electronics is messing up. How about a bad timing chain? that would cause erotic timing too!!

Is that intital with or without the vacuum advance hooked up?

...Dennis

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post #6 of 12 (permalink) Old Sep 16th, 04, 11:34 AM
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Make sure there is no vacuum advance connected when you're setting the initial. Also make sure the mechanical advance is working properly. The rotor on a friends Chevelle was causing the mechanical to hang in the advanced position.

Robert

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post #7 of 12 (permalink) Old Sep 16th, 04, 11:38 AM Thread Starter
 
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the dist is a mechanical advance type and the balancer is a brand new fluidampr

the cap looks dirty inside so I'll clean it out
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post #8 of 12 (permalink) Old Sep 16th, 04, 11:45 AM
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I've got a hunch that if you were to determine TRUE TDC you'd find your timing is not where you think it is.

Jody


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post #9 of 12 (permalink) Old Sep 16th, 04, 11:47 AM
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Just make sure you can turn the rotor a bit by hand then release it and make sure it springs back. Also are you sure the hold down is tight and the distributor hasn't just recentley moved on it's own.

Robert

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post #10 of 12 (permalink) Old Sep 16th, 04, 02:01 PM Thread Starter
 
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the cap has alot of corrosion in it so I'm going to start there then check everything else
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post #11 of 12 (permalink) Old Sep 17th, 04, 04:13 PM
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You either have the wrong balancer or the wrong timing tab, or both; there's no way it would even start with 36* initial timing. Buy a piston stop and find true TDC and work from there so you have a good baseline for tuning; right now you have no idea what's going on. [img]graemlins/thumbsup.gif[/img]

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post #12 of 12 (permalink) Old Sep 17th, 04, 11:00 PM
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DJD- what, exactly, is "erotic timing" as it pertains to the distributor in a car?
just curious if there is a whole 'nuther car culture out there i've never heard about before.

you don't plan sincerity.
you have to make it up on the spot.

wanna hear about 20 years ago when i was too smart to know any better?
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