L98 Ignition Upgrades
Thread Starter
Instructor
Joined: Aug 2000
Posts: 209
Likes: 0
From: Hilton Head SC
L98 Ignition Upgrades
I know this subject is always beat to death :smash: but what upgrades should I make, if any, to my 90'. All I can confirm at this time is that it has Accel 8.8 plug wires on it and a stock cap and coil. Dont know what plugs are in it.... What can I expect from any changes ?? Suggestions would be appreciated. Thanks :cheers:
Drifting
Joined: Dec 2000
Posts: 1,733
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From: Sarasota FL
Re: L98 Ignition Upgrades (1990PoloVette)
Ya know, every one here seems to put down the MSD boxes. Every Winston Cup car has two under the hood. The're not so much for WFO, but to keep the plugs clean during pit stops and cautions. I'm a believer.
The other point is to use a cap and rotor that have brass posts inside (Accel and others). There is also a thing called a Dyna Module that increases dwell time in the distributor. It replaces the ignition module. I haven't got one yet, but it sounds good. The caveat here is that any non stock part is subject to failure at a greater rate than GM. But then again some are better than stock.
Good luck,
DON M
The other point is to use a cap and rotor that have brass posts inside (Accel and others). There is also a thing called a Dyna Module that increases dwell time in the distributor. It replaces the ignition module. I haven't got one yet, but it sounds good. The caveat here is that any non stock part is subject to failure at a greater rate than GM. But then again some are better than stock.
Good luck,
DON M
Le Mans Master
Joined: Feb 2001
Posts: 6,398
Likes: 1
From: Loveland Co
Cruise-In III Veteran
Re: L98 Ignition Upgrades (1990PoloVette)
MSD definatley is a cost effective way to upgrade your ignition, plus have plenty to handle any future upgrades, i know it will probably come up so i have taken a picture of how i mounted mine. It was mounted up under the passanger side headlight i will post some pics when i get home
Team Owner
Joined: Dec 2000
Posts: 90,675
Likes: 304
From: SE NY
Cruise-In II Veteran
Re: L98 Ignition Upgrades (91_Corvette)
I like the HyperTech coil/cap/rotor assembly.
For spark plugs, just cut back the electrodes on AC Delcos and with the HyperTech setup and good wires, gap em to about .045"-.050" (10 HP gain, better gas mileage, lower emissions and it's free...such a deal).
For spark plugs, just cut back the electrodes on AC Delcos and with the HyperTech setup and good wires, gap em to about .045"-.050" (10 HP gain, better gas mileage, lower emissions and it's free...such a deal).
Racer
Joined: Sep 2000
Posts: 402
Likes: 0
From: Beaverton OR
Re: L98 Ignition Upgrades (1990PoloVette)
who in the world would put down msd? they have a great kit for the HEI with a 6al box, coil, wire & harness. helps the revs over 5000 quite a bit. also everyone has there 2 cents on plugs and mine go to bosch...they are BY FAR my favortive plug, taylor & msd are the favs for wires.
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Team Owner
Joined: Dec 2000
Posts: 90,675
Likes: 304
From: SE NY
Cruise-In II Veteran
Re: L98 Ignition Upgrades (Paul G)
I trim the ground electrode back to the near edge to the center electrode and trim all edges with a fine file to remove any burs or sharpness.
Team Owner
Joined: Mar 2000
Posts: 83,381
Likes: 87
From: Boston, MA
Re: L98 Ignition Upgrades (importeater)
helps the revs over 5000 quite a bit.
Burning Brakes
Joined: Nov 2000
Posts: 855
Likes: 0
Re: L98 Ignition Upgrades (DON M)
Ya know, every one here seems to put down the MSD boxes. Every Winston Cup car has two under the hood.
Le Mans Master
Joined: Feb 2001
Posts: 6,398
Likes: 1
From: Loveland Co
Cruise-In III Veteran
Re: L98 Ignition Upgrades (Rick86)
i haven't had any problems with mine and have it wired up so that if it does fail all i have to do is change a few wires and it will be running off the stock ignition again, takes 5 minutes in the dark :D
