Opti replacement--Delteq????
Thread Starter
Racer
Joined: Oct 2003
Posts: 429
Likes: 0
From: Plains Ga.
Opti replacement--Delteq????
What after market systems are there to replace the GM Opti distubitor?
Does any one have a DIY drawings or schematic? I see that Delteq has a "Bare Bones" package. I am trying to find a system that I can assemble and install my self if possible.
Help!
JTHVETTE
Does any one have a DIY drawings or schematic? I see that Delteq has a "Bare Bones" package. I am trying to find a system that I can assemble and install my self if possible.
Help!
JTHVETTE
Burning Brakes
Joined: Nov 2004
Posts: 1,107
Likes: 0
From: RI
If you have a good Helms manual, any opti replacement is a day job.
Dynaspark, MSD and GM have opti replacements. I put in an OEM and it was defective from day 1 so I'm heading down the MSD route. There's a GP in the for sale section from TByrne.
Dynaspark, MSD and GM have opti replacements. I put in an OEM and it was defective from day 1 so I'm heading down the MSD route. There's a GP in the for sale section from TByrne.
Melting Slicks
Joined: Oct 2004
Posts: 2,510
Likes: 4
From: Austin Texas
here is a decent article explaining some of the major steps of Opti replacement:
http://corvettefever.com/howto/16758/
I'll look for a more detailed procedure and edit this post with that info if i can find it....DOH
ahh, here it is:
http://www.houston-f-body.org/tech/optispark/
http://corvettefever.com/howto/16758/
I'll look for a more detailed procedure and edit this post with that info if i can find it....DOH
ahh, here it is:
http://www.houston-f-body.org/tech/optispark/
Last edited by MikeC4; Jun 26, 2006 at 10:04 PM.
Safety Car
Joined: Sep 2002
Posts: 4,971
Likes: 9
From: The reason time exists is so everything doesn't happen at once
Your profile lists a 96 which means you have the Gen2 Opti; much cheaper and more reliable (waterproof) than the Gen1. Otherwise the Dynaspark or MSD.
Last edited by jrzvette; Jun 26, 2006 at 10:26 PM.
Melting Slicks
Joined: Oct 2004
Posts: 2,510
Likes: 4
From: Austin Texas
Originally Posted by jrzvette
Your profile lists a 96 which means you have the Gen2 Opti; much cheaper and more reliable (waterproof) than the Gen1. Otherwise the Dynaspark or MSD.
I had no problems with my OEM Gen2 Opti replacement.
Le Mans Master
Joined: May 2005
Posts: 7,344
Likes: 2,272
From: Central Maryland
As others have correctly noted here, the Opti cannot be completely replaced by the Delteq or any similar DIS conversion setup.
The Opti serves two functions:
1. It provides low-resolution and high-resolution timing pulses which allow the ECM to calculate camshaft position, velocity and acceleration. The ECM uses this, along with input from numerous other sensors (MAF, MAP, IAT, ECT, VSS, KS, etc) to calculate optimum spark timing and injector pulse width and timing. The ECM cannot manage spark timing or fuel metering without this input from the Opti.
2. It serves as a conventional spark distributor. This function of the Opti is what can be replaced with the Delteq (or LTCC) setup.
In short, you can move the high-voltage portion of the ignition system out of the Opti with the Delteq or LTCC, but you still must retain the two optically-derived timing pulse signals from the Opti to the ECM.
The Delteq is a good package, within the limitations of what it can do. It does what it does very well. But it cannot eliminate the Opti altogether. If you have confidence in the optical section of your Opti, the Delteq or LTCC may be attractive to you.
If you want a true, bolt-on aftermarket solution for the deficiencies associated with the OEM Opti, consider the DynaSpark or the new-to-the-market MSD unit. The Dyna has a good performance record in the field. The MSD is still a bit of an unknown in terms of its performance (with respect to long-term reliability).
Be well,
SJW
The Opti serves two functions:
1. It provides low-resolution and high-resolution timing pulses which allow the ECM to calculate camshaft position, velocity and acceleration. The ECM uses this, along with input from numerous other sensors (MAF, MAP, IAT, ECT, VSS, KS, etc) to calculate optimum spark timing and injector pulse width and timing. The ECM cannot manage spark timing or fuel metering without this input from the Opti.
2. It serves as a conventional spark distributor. This function of the Opti is what can be replaced with the Delteq (or LTCC) setup.
In short, you can move the high-voltage portion of the ignition system out of the Opti with the Delteq or LTCC, but you still must retain the two optically-derived timing pulse signals from the Opti to the ECM.
The Delteq is a good package, within the limitations of what it can do. It does what it does very well. But it cannot eliminate the Opti altogether. If you have confidence in the optical section of your Opti, the Delteq or LTCC may be attractive to you.
If you want a true, bolt-on aftermarket solution for the deficiencies associated with the OEM Opti, consider the DynaSpark or the new-to-the-market MSD unit. The Dyna has a good performance record in the field. The MSD is still a bit of an unknown in terms of its performance (with respect to long-term reliability).
Be well,
SJW
