C4 Tech/Performance L98 Corvette and LT1 Corvette Technical Info, Internal Engine, External Engine

Distributor Position

Old Jul 20, 2009 | 06:38 PM
  #1  
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Default Distributor Position

When I took the distributor out because I was going to port my base, I forgot which cylinder the rotor was facing.

I marked the distributor and the rotor, and I also marked the hood seal to the ignition coil to remember where the timing was.

Now this is the problem...when I put the distributor in, the marks on the rotor and the distributor base are on the back of the car facing the firewall. Also, the distributor will not go all the way down to the base. There is about a half inch gap.

I can't remember if I marked the rotor and distributor when it was facing towards the front of the car, or the back.

When I mocked up the coil and the distributor, the coil mark and hood seal mark line up, but it doesn't seem right to me that the rotor and distributor marks are facing the rear of the car because I dont see how I would have been able to get a marker in there.

Is there any way to check?

HELP!!
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Old Jul 20, 2009 | 07:57 PM
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Mark dizzy base where #1 is on cap
Pull the dizzy back out
Pull # 1 plug and stick you finger in the hole
Have someone jog the key until you feel the cylinder pressure pushing your finger.
Rotate balancer until mark lines up with 6* BTDC
Drop dizzy back in so the base is in a position that will allow for adjustment (it's crowded on drivers side)
The rotor is going to turn as the gears mesh, so have it in a position that will end up at the mark you put on base, when dizzy is fully seated.

The problem your having with the dizzy not seating, is the mating of dizzy to oil pump drive shaft. Most times a long flat blade screwdriver is need to stick down dizzy hole and adjust pump drive shaft into a position that will mate with dizzy.

This is probably not the answer you were looking for, but at least there is no guessing.
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Old Jul 20, 2009 | 07:59 PM
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http://members.shaw.ca/agent86/Spark...g%20Wiring.pdf
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Old Jul 21, 2009 | 11:22 AM
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Originally Posted by AGENT 86
Most times a long flat blade screwdriver is need to stick down dizzy hole and adjust pump drive shaft into a position that will mate with dizzy.
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Old Jul 21, 2009 | 01:54 PM
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Originally Posted by AGENT 86
Mark dizzy base where #1 is on cap
Pull the dizzy back out
Pull # 1 plug and stick you finger in the hole
Have someone jog the key until you feel the cylinder pressure pushing your finger.
Rotate balancer until mark lines up with 6* BTDC
Drop dizzy back in so the base is in a position that will allow for adjustment (it's crowded on drivers side)
The rotor is going to turn as the gears mesh, so have it in a position that will end up at the mark you put on base, when dizzy is fully seated.

The problem your having with the dizzy not seating, is the mating of dizzy to oil pump drive shaft. Most times a long flat blade screwdriver is need to stick down dizzy hole and adjust pump drive shaft into a position that will mate with dizzy.

This is probably not the answer you were looking for, but at least there is no guessing.
Reply

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