Opti Spark Replacement Once and for all?
its lower if excluding the HP Tuners software package.
Might want to look into the "why" you are having issues with your opti (weeping WP, cheap china junk Opti or bad wiring). 100's of thousands of LT1/4 motors with Optis that work...
1. No opti......replaced with a 24x coil-to-cylinder setup;
2. LSx ECM replaces LT1 PCM;
3. Increased RPM potential....breaks through that 7000 RPM barrier;
4. Stronger and more consistent/reliable spark above 6000 RPMs.
5. Marginally more power through the RPM range; less than 10 hp/tq to the wheels in all but the most extreme cases. BUT, due to higher RPM capability your peak power can exceed peak opti power by as much as 30 HP depending on how high you can rev it AND still build power.
6. See #1.
KW
1. No opti......replaced with a 24x coil-to-cylinder setup;
2. LSx ECM replaces LT1 PCM;
3. Increased RPM potential....breaks through that 7000 RPM barrier;
4. Stronger and more consistent/reliable spark above 6000 RPMs.
5. Marginally more power through the RPM range; less than 10 hp/tq to the wheels in all but the most extreme cases. BUT, due to higher RPM capability your peak power can exceed peak opti power by as much as 30 HP depending on how high you can rev it AND still build power.
6. See #1.
KW
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That being said in relation to your question and as previously stated some 24X system which also has the added benefit of tunability or some people go carb with a distributer.
I just recently dropped in another forged 383 LT4 and decided to go with the TorqHead 24x system. I decided to go that route mainly for the ability and ease of getting the car dyno-tuned. It's pretty much IMPOSSIBLE to find anyone besides the few mail order tuners that will tune an Opti equipped car.


I just recently dropped in another forged 383 LT4 and decided to go with the TorqHead 24x system. I decided to go that route mainly for the ability and eases as of getting the car dyno-tuned. It's pretty much IMPOSSIBLE to find anyone besides the few mail order tuners that will tune an Opti equipped car.



Fortunately, the rotor didn't come completely loose, and just "cocked" a little, causing the tip of the rotor to brush against the contacts in the cap. This, in turn, created a "ticking" noise, which alerted me to the problem, which I then found with a little investigation. I probably could have simply gotten away with just re-setting the rotor and applying some Locktite to the screws, but to me, that would have been "half-assing" it, so I replaced the cap and rotor again, and this time applied Locktite to the rotor screws.
I sold the car two years ago, with 77,000 miles on it, and it was still running well. I have to agree with you, "nomoneyz", that there are most likely a LOT of Optis out there, working properly for a LONG time, that we never hear about. Think about how many Impala SSs, and LT1 equipped police cars that are out there, that racked up a lot of miles.
Due to the limited market, however, I doubt that you'll ever see any improved Optis in the future. MSD built one, and there was a short lived unit called the 'Dynaspark', that was supposed to be the Cadillac of all Opti-sparks, but I think they fell by the wayside, a number of years ago. Too costly, and too limited a market, is what I think doomed the unit.
YES, EIGHT COILS are better than ONE !
Paul is just about to finish/test the 58x UPGRADED crank trigger system.
This ALLOWS for an increase in resolution for Spark Accuracy. (2 degrees to the 58x of 1/4 degree)
That will allow the newer GM (DBW) EMS to be fitted to a SBC. (Including UEGO)
Take the time to CALL Paul for your quote.
Lance
As for the opti... it's junk and it's always been the weak point of these motors. It's why GM ditched it and never looked back. I never had moisture problems I always ran an electric pump. These things just don't take well to aftermarket ignition systems and they don't like high rpms. They also malfunction like nothing. At this point in my life you could blindfold me and I could replace one (and I wish I was kidding about that). If your car is stock or bolt on it's okay when you start getting into the block and changing this it's a PITA. The coil packs have it beat in every way. Oh and my favorite changing plug wires and running them to that idiotic location they placed it in. I'm just tired of them not holding up.
Here's what life is like when you try racing cars with an Optifart.
Sorry I'm bitter about the Optispark it's cost me more races and tow truck rides than I'd like and you always know when the Opti is holding you back and your car starts flat lining when your in the red and it makes your engine bog as it breaks your rpms up every time you shift up high. Used to **** me off when I would take it apart and see the inside of it worn to high hell and it was only a year old. Then you try to be cheap because the things are so damn expensive you start just replacing the rotor and the cap (good luck with that). Bah sorry I can go on an opti rant for days. The GM ones suck, the Accel ones really suck and I'm not dumb enough to blow the money on an MSD to find out the same story.
Last edited by Heatmaker; Aug 12, 2017 at 02:26 PM.
For a high revving motor that see's track time frequently I would advise stepping away from the Opti. Im not saying its a good system, I actually think the Engineer was very intoxicated when he designed it. But for a car that never goes past 6k hell even 6300 rpms on a regular basis. The average, every day street car that is not a DD maybe just weekends and may see the track 3-5 times a year I see no point in spending the money. (I plan on going 24x in the future) I have taken my car to open track days on many occasions and run the road coarse keeping it high in the RPMS the entire time and to this day after owning my car for 9 years replaced my Opti once, last year because I had access to a new one super cheap and I happened to be inside my motor at the time...(Bada Bing) Actually I still have the old one, and have never opened it up. Do you guys want me to take a look and see how it looks?
And I know I'm not "Lucky" as the money keeps disappearing out of my bank account before I can buy go fast parts. If anything I'm surprised I haven't replaced my Opti 30 times just because that's my luck..lol...by the way Adulting sucks






