81 computer removal
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81 computer removal
I know the computer is under the drivers seat. But what is the right way to go about disconnecting it. (just unplug all the wires going into it ???/) Now if I have unplugged all the wires under the hood changed out carb to non computer and went non computer dist. Question is if the computer is still hooked up under the seat is there a signal going to the distributer to try and tell it what to do??? Thanks Randy
Melting Slicks
Joined: Jan 2005
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From: Madison Ms
YOU MUST GET A NEW DISTRIBUTOR AND CARB......Both of the old are dependent on the computer. Just leave the computer in, and unhook as little as possible at first. After you get her back running, start elimating stuff a little at a time, just be dang sure you know what it is first. Many of the sensors and vac hoses can be deleted, just be careful.
Melting Slicks
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From: Madison Ms
Originally Posted by page62
Ummm...I think he says he installed a non-computer carb and dist...
Certainly you have not hooked the computer back to your new distributor, have you?
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81 computer removal
Here is what I did. All of the computer wires under the hood are unhooked. New HEI Distributer and new Q jet carb non computer. Yes I did take the old plug that plugged into the old distributor and plugged it into the HEI.??? I have not touch the computer under the seat all wires there are still in tack. Please help..... Thanks Randy
Melting Slicks
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From: Madison Ms
Randy, why did you plug the puter back to the distrib.? No reason to other than for power. I clipped the ignition wire running to the old distrib. and the power wire and ran them directly to the new coil. Plugged the distrib. up to new coil, and bingo.....Get shed of that puter totally.....
Edit: I'm now assuming you have a true HEI with coil in the distrib.? Not sure how to handle that one. I am running an MSD ready to run distrib. with separate coil.
Edit: I'm now assuming you have a true HEI with coil in the distrib.? Not sure how to handle that one. I am running an MSD ready to run distrib. with separate coil.
Last edited by MsVetteMan; May 16, 2005 at 09:41 PM.
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Computer Removal
Yes it is a true HEI dist. all it has is the plug on the one side and I thought you use the old plug and just plug it back in. What next??? I was told today that as long as the computer still has power it will try to adjust the timing... Is this true....
Melting Slicks
Joined: Jan 2005
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From: Madison Ms
I'm not sure. I was under the impression that you had to go with a setup like I am using with the seperate coil. Maybe someone else will jump in here, but I wouldn't run it through the puter........
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Safety Car
Joined: Dec 2004
Posts: 4,071
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From: San Diego CA
Originally Posted by 81vettelover1
Yes it is a true HEI dist. all it has is the plug on the one side and I thought you use the old plug and just plug it back in. What next??? I was told today that as long as the computer still has power it will try to adjust the timing... Is this true....
Older style HEIs have no idea what a computer is. They use a vacuume to advance the timing. I'm going to be going through this same process in a week or so. What kind of carb did you get?
Safety Car
Joined: Dec 2004
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From: San Diego CA
Originally Posted by 81vettelover1
Roch q jet ,,,,I think 650 that end of it works very well. I company in California sells them pretty cheap. New not remf.
It look like good build quality? Got a link or phone number to the company? I still haven't outright decided on where I'm going to order my new q-jet yet.
Pro
Joined: Aug 2002
Posts: 560
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From: The Valley of The Sun AZ
As far as I can see there's only a pink(switch) and white(tach) wire that are needed. The other wires(BLK/TAN/PPL/WHT) all run to the computer and are not used by anything else. I wouldn't think a new HEI dist. would have that connector on it.
Last edited by tersian; May 17, 2005 at 02:58 PM.
