LT1 Based Engine Tech 1993-1997 LT1/LT4 Engine Related

MSD Pro billet timing adjusting screw

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Old Jun 16, 2007 | 10:09 PM
  #1  
always faster's Avatar
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MSD Pro billet timing adjusting screw

I finally finish all my install including a msd pro billet that was exchange for warranty.

The problem is that my car have an awfull idle(kind of miss/stumble) and when i give it some gas it stumble more.Also when i left the gas pedal it gives a little backfire poping sound.The basic settings of the adjusting screw(2 turn and 1/2 out).

I adjust the srew and screw it to the max so it sit flush with the housing,absolutely no turn out.The car run fine on idle and no more backfire...

But when i about to start from a stop the car seems to miss if i push on the gas pedal too quickly it even want to die...If i start from a stop really slowly there is no problem?

What could be the trouble?

Also when i srew in the adjusting screw do i give timing or do i take timing?

Thanks
Old Jun 16, 2007 | 10:16 PM
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I believe you only use the adjustment if you have a cam that needs different timing than stock. You should leave it at the factory setting and check things like plugs wires loose on both ends, wrong plug routing, plugs not all the way tight, burnt plug wire and so on. Maybe it was installed wrong so the gear is not on the proper way.
Old Jun 17, 2007 | 12:18 PM
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Originally Posted by mrmint69
I believe you only use the adjustment if you have a cam that needs different timing than stock. You should leave it at the factory setting and check things like plugs wires loose on both ends, wrong plug routing, plugs not all the way tight, burnt plug wire and so on. Maybe it was installed wrong so the gear is not on the proper way.
I agree. I had the same problem and it turned out two of my wires were crossed and one was burnt.
Old Jun 17, 2007 | 02:26 PM
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Wire are brand new(less than 3 miles) they are plug OTVC directly to the DELTEQ so the wire are not burnt and not crossed.
Old Jun 17, 2007 | 04:28 PM
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Reset the computer or let it learn on it's own after about 50/100 miles.
Old Jun 17, 2007 | 04:55 PM
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Originally Posted by 1racerdude
Reset the computer or let it learn on it's own after about 50/100 miles.
I ll give it a shot.

Does anyone know if turning the adjusting screw on the pro billet gives or take so timing advance?
Old Jun 17, 2007 | 05:03 PM
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Originally Posted by always faster
I ll give it a shot.

Does anyone know if turning the adjusting screw on the pro billet gives or take so timing advance?
Should say in the instructions.
Old Jun 17, 2007 | 05:08 PM
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Originally Posted by 1racerdude
Should say in the instructions.

Nope the instruction only tell that the screw can give or take degree of timing but nothing else...
Old Jun 17, 2007 | 05:14 PM
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Originally Posted by always faster
Nope the instruction only tell that the screw can give or take degree of timing but nothing else...
Did you look on their website or on the web.
It would take me two days to explain how to check it. It's not hard but.
Old Jun 17, 2007 | 06:04 PM
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Originally Posted by 1racerdude
Did you look on their website or on the web.
It would take me two days to explain how to check it. It's not hard but.

Nothing came up on the web and there website doesnt talk about it.
Old Jun 17, 2007 | 06:33 PM
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Originally Posted by always faster
Nothing came up on the web and there website doesnt talk about it.
Ya might have to give them a call tomorrow.
Old Jun 17, 2007 | 08:05 PM
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Originally Posted by always faster
I finally finish all my install including a msd pro billet that was exchange for warranty.
Did you check the rotor screws on your new MSD and possibly put some thread-locker on them?

http://web.camaross.com/forums/showthread.php?t=526760

WD
Old Jun 17, 2007 | 11:20 PM
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Originally Posted by 1racerdude
Reset the computer or let it learn on it's own after about 50/100 miles.
Learn what?
Old Jun 18, 2007 | 06:59 AM
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Originally Posted by The Engineer
Did you check the rotor screws on your new MSD and possibly put some thread-locker on them?

http://web.camaross.com/forums/showthread.php?t=526760

WD
I dont have anymore high voltage in there so i took out the "guts" inside(black back plate,metal protection plate and the rotor).My friend is a machinist who made me a billet disc the same size has the rotor to avoid the timing disc to warp.The cap is the billet one from DELTEQ.I also put red locktite on all the screw

Last edited by always faster; Jun 18, 2007 at 07:28 AM.
Old Jun 18, 2007 | 10:51 AM
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Originally Posted by Injuneer
Learn what?

It's ABC's.

If there was some garbage the computer was trying to function with then if it resets it will go back to it's original set up and relearn what it is running with now.

I am not up to speed on all these computers do, but that is my understanding.

May be all out in left field.



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