Go back to GM Opti after Dynaspark?
11-16-2009, 09:48 PM
#1
Burning Brakes
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Go back to GM Opti after Dynaspark?
When I had my '92 LT1 engine rebuilt a few years back, I 'opted' for the Dynaspark. Well, less than 5K miles later, there's no spark.
Has anyone reversed, going back to the standard opti ?
My son is working at a local GM place and despite some help from the senior mechanic, the procedure to reverse course did not work.
So, any helpful hints? Is there a wiring difference, perhaps?
Has anyone reversed, going back to the standard opti ?
My son is working at a local GM place and despite some help from the senior mechanic, the procedure to reverse course did not work.
So, any helpful hints? Is there a wiring difference, perhaps?
11-16-2009, 10:22 PM
#2
Le Mans Master
Are you sure the MSD unit was no good and the source of the problem. I don’t know what instructions you have to go back to the original configuration but can there be another problem causing the no spark condition.
What was changed for the MSD wiring and have you installed an original opti at this point. Has any original wiring or plugs been cut.
What was changed for the MSD wiring and have you installed an original opti at this point. Has any original wiring or plugs been cut.
11-16-2009, 11:28 PM
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Burning Brakes
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Are you sure the MSD unit was no good and the source of the problem. I don’t know what instructions you have to go back to the original configuration but can there be another problem causing the no spark condition.
What was changed for the MSD wiring and have you installed an original opti at this point. Has any original wiring or plugs been cut.
What was changed for the MSD wiring and have you installed an original opti at this point. Has any original wiring or plugs been cut.
11-17-2009, 12:17 AM
#4
Le Mans Master
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St. Jude Donor '03 & '05
I see nothing in this post of an MSD? It is a Dynaspark. I would send the Dynaspark back for a looksee. The only way an Dynaspark is going to die is the cap/rotor broke or the optical sensor died (unlikely)
Verify all the wiring for the ignition is hooked up. And test your ICM and coil, before guessing whats wrong. A dealership can test these items. Check ignition fuses too.
Verify all the wiring for the ignition is hooked up. And test your ICM and coil, before guessing whats wrong. A dealership can test these items. Check ignition fuses too.
11-17-2009, 08:44 AM
#5
Race Director
I see nothing in this post of an MSD? It is a Dynaspark. I would send the Dynaspark back for a looksee. The only way an Dynaspark is going to die is the cap/rotor broke or the optical sensor died (unlikely)
Verify all the wiring for the ignition is hooked up. And test your ICM and coil, before guessing whats wrong. A dealership can test these items. Check ignition fuses too.
Verify all the wiring for the ignition is hooked up. And test your ICM and coil, before guessing whats wrong. A dealership can test these items. Check ignition fuses too.
MSD's optispark replacement was a PO$, based off of forum responses.
The Dynaspark (at least when it was its own company) had favorable reviews. Although Im not saying that yours could not have had a problem.
Id cover all the bases before digging into a distributor replacement.
11-17-2009, 05:05 PM
#6
Burning Brakes
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MSD's optispark replacement was a PO$, based off of forum responses.
The Dynaspark (at least when it was its own company) had favorable reviews. Although Im not saying that yours could not have had a problem.
Id cover all the bases before digging into a distributor replacement.
11-19-2009, 10:01 PM
#8
Drifting
11-19-2009, 10:07 PM
#9
Burning Brakes
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To go back to the Opti from the Dynaspark, they had to splice in a harness (I do not know all the connectivity details). The first take had at least two connections reversed.
Pretty much since the rebuild, once and a while I noticed the car would go sluggish. Less frequently at first, but much more lately. I wonder if there were Dynaspark issues from the get go?
Pretty much since the rebuild, once and a while I noticed the car would go sluggish. Less frequently at first, but much more lately. I wonder if there were Dynaspark issues from the get go?
