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

Timing

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Old Sep 5, 2007 | 05:03 PM
  #1  
Bails098's Avatar
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From: Barrie Canada
Timing

Im tryin to set up my timing with my msd cap and rotor, when my motor is at top dead center should it be firing cylinder 1?

any suggestions on setting this up
Old Sep 5, 2007 | 05:06 PM
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ahhh... what exactly are you trying to do

is this an lt1 with an opti

the opti will only slide into the drive in one position easily
Old Sep 5, 2007 | 05:12 PM
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Yes it is an LT1 opti but i dont think my timing is correct it is not runing right
Old Sep 5, 2007 | 05:16 PM
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when you put the opti back on did it slide into position or did you force it into place

what exactly do you mean by not running correctly, does it have any codes
Old Sep 5, 2007 | 05:26 PM
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when i put the opti back on it will go on several different ways and it sounds like it is misfiring
Old Sep 5, 2007 | 05:34 PM
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Timing is set by the PCM. You need to make sure the opti is installed correctly. I know the MSD unit has an adjustment screw. But, if it's not installed properly that screw isn't going to help.
Old Sep 5, 2007 | 05:35 PM
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make sure the dowel pin fell into the correct hole. i would say you missed but its hard to do, cause the pin is longer than the other holes are deep.
Old Sep 5, 2007 | 06:49 PM
  #8  
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Originally Posted by Bails098
Im tryin to set up my timing with my msd cap and rotor, when my motor is at top dead center should it be firing cylinder 1?

any suggestions on setting this up
...it depends on which cylinder you have at TDC...
Old Sep 6, 2007 | 06:07 PM
  #9  
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Originally Posted by Bails098
when i put the opti back on it will go on several different ways and it sounds like it is misfiring
You might want to provide a "signature" with basic info about your car, inculding the year, model, tranny, etc. The Opti has two different drive designs, depending on year. Without knowing which one you have, it makes it harder for people to suggest possible causes of the problem.
Old Sep 6, 2007 | 06:24 PM
  #10  
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Originally Posted by Bails098
Im tryin to set up my timing with my msd cap and rotor, when my motor is at top dead center should it be firing cylinder 1?

any suggestions on setting this up

Before buying an MSD opti you should have a keyed hub, degreed damper and fabricated a timing pointer, otherwise you are just guessing.

It sounds to me like you are on the verge of costing yourself a lot of time and money. Last guy I knew who said the things you are, broke the timing adjustment on the MSD and had to go back to stock then I found some mixed up plug wires for him. The plug wires were the problem and in an effort to "tune" with the MSD timing adjustment he cost himself $500 and days of wasted time.

If you have the stocker try it and see if the car runs right.
Old Sep 7, 2007 | 12:33 PM
  #11  
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Since he only has the MSD cap and rotor, I think he's just trying to insure he has the Optii indexed correctly to the cam. I don't think he is trying to use the MSD timing feature, since that's on the body of the Opti.

Without knowing which drive he has, we're sort of spinning out wheels.
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