Give me an idea of...
#1
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the demand for an optical sensor-less method of running an LT1 PCM. Yes it will still utilize the optispark as a distributor, but I believe an aftermarket cap & rotor will not have any reliability issues unless some of you are running HVC II coils on a stock computer
The only "difficult" part of this was finding the right high quality electronics capable of delivering the very high resolution the LT1 PCM needs. I believe I have gotten the combination correct, and will begin testing on a local stock LT1 in the next month or so. This will be similar to the design of the original Electromotive kit from ~10 years ago, however my design will give both the high and low resolution signals for trouble-free sequential injection.
Another application I see for this is relatively low cost EFI retrofitting to a traditional sbc/bbc considering an LT1 PCM and harness can be had for less than 150 dollars. I have a compatible reluctor and pickup for a traditional distributor in the works, but not as far along as the opti replacement setup.
Tentative pricing for this setup will be ~550 dollars, which would include a new non-optispark base unit, msd cap/rotor, and all bracketry, sensors, reluctors, wiring harness, etc.
Pics and vids to come
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The only "difficult" part of this was finding the right high quality electronics capable of delivering the very high resolution the LT1 PCM needs. I believe I have gotten the combination correct, and will begin testing on a local stock LT1 in the next month or so. This will be similar to the design of the original Electromotive kit from ~10 years ago, however my design will give both the high and low resolution signals for trouble-free sequential injection.
Another application I see for this is relatively low cost EFI retrofitting to a traditional sbc/bbc considering an LT1 PCM and harness can be had for less than 150 dollars. I have a compatible reluctor and pickup for a traditional distributor in the works, but not as far along as the opti replacement setup.
Tentative pricing for this setup will be ~550 dollars, which would include a new non-optispark base unit, msd cap/rotor, and all bracketry, sensors, reluctors, wiring harness, etc.
Pics and vids to come
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#3
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Another application I see for this is relatively low cost EFI retrofitting to a traditional sbc/bbc considering an LT1 PCM and harness can be had for less than 150 dollars. I have a compatible reluctor and pickup for a traditional distributor in the works, but not as far along as the opti replacement setup.
I got ridiculed for even suggesting the possibility of doing this with something that would allow running an Lt1 pcm and gen 1 distributor or pretty much EXACTLY what you are wanting to do now look at this.
If so, I'd get one when I go to build my shortblock. Might as well get a 427 block or something and do this instead.
#5
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You talking about even running a gen 1 block in an lt1 car too?
I got ridiculed for even suggesting the possibility of doing this with something that would allow running an Lt1 pcm and gen 1 distributor or pretty much EXACTLY what you are wanting to do now look at this.
If so, I'd get one when I go to build my shortblock. Might as well get a 427 block or something and do this instead.
I got ridiculed for even suggesting the possibility of doing this with something that would allow running an Lt1 pcm and gen 1 distributor or pretty much EXACTLY what you are wanting to do now look at this.
If so, I'd get one when I go to build my shortblock. Might as well get a 427 block or something and do this instead.
If you're an LT1 guy this will pay for itself after a single opti failure
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#7
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you could run a Gen 1 if you wanted too, and the cost of this setup for a Gen 1 with used pcm, harness and all sensors would come in less than 1k easily. TB would be much less than a quality carb... Sure you could do the 24x stuff, but if you don't need the capabilites (95% of people don't) why pay over 2x as much for a reliable setup?
If you're an LT1 guy this will pay for itself after a single opti failure![Winky](https://ls1tech.com/forums/images/smilies/LS1Tech/gr_wink.gif)
If you're an LT1 guy this will pay for itself after a single opti failure
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#9
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I'm emailing my files to the laser cutter tomorrow. Met the guy at the track on saturday and he was loving my car and the CAD files I had on my laptop
His laser cutter is good to +/-.001" which should be perfect.
Mike,
Yea I've had the 1x cam sensor thing done for awhile, just waiting for some time to get it bench tested and on my car. I figured why not do an entire setup for the LT1 PCM if I have the packaging already figured out inside the opti.
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Mike,
Yea I've had the 1x cam sensor thing done for awhile, just waiting for some time to get it bench tested and on my car. I figured why not do an entire setup for the LT1 PCM if I have the packaging already figured out inside the opti.
#10
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I'm emailing my files to the laser cutter tomorrow. Met the guy at the track on saturday and he was loving my car and the CAD files I had on my laptop
His laser cutter is good to +/-.001" which should be perfect.
Mike,
Yea I've had the 1x cam sensor thing done for awhile, just waiting for some time to get it bench tested and on my car. I figured why not do an entire setup for the LT1 PCM if I have the packaging already figured out inside the opti.
![Winky](https://ls1tech.com/forums/images/smilies/LS1Tech/gr_wink.gif)
Mike,
Yea I've had the 1x cam sensor thing done for awhile, just waiting for some time to get it bench tested and on my car. I figured why not do an entire setup for the LT1 PCM if I have the packaging already figured out inside the opti.
#12
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#16
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If you can make it not only ditch the opti sensor but also remove the 7k rpm limit like you are attepmting then I can promise you a sale.
Was looking at the 24x kit for tuning and high rpm use like so many others, but if I could get a higher rpm ceiling while ditching the opti sensor and keeping the stock harness it would be cheaper and easier to install.
I have a near complete monster of an engine and still do not know how it will be controlled...carb/dizzy, 24x, or bite the bullet and go to a FAST.
Was looking at the 24x kit for tuning and high rpm use like so many others, but if I could get a higher rpm ceiling while ditching the opti sensor and keeping the stock harness it would be cheaper and easier to install.
I have a near complete monster of an engine and still do not know how it will be controlled...carb/dizzy, 24x, or bite the bullet and go to a FAST.
#17
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Am I understanding correctly that you are not only designing a set-up that retains the opti but without the sensor inside AND also one that uses a conventional style (through the intake) distributor? I would be highly interested in both!! Maybe more the latter, since you could run it in a GEN1 block using a modded LT1 intake so it would still look like and LT1, or you could run any SBC for that matter. Or even an LS based engine using a single plane efi, elbow, LT1 style TB, but instead of the usual wiring nightmares....just plug it straight up to the LT1 harness. Hhhmmm....dare I say BBC with efi using the LT1 style TB?
I know all those have been swapped into our cars before, but being able to without changing or building a wiring harness or buying a $2K - $3K dollar aftermarket efi system sounds too good to be true.
All the swaps I mentioned are just ideas, I would be interested just for peace of mind with opti failures. I refuse to invest a couple grand in a 24x setup. Not against anyone else using it, but it's not for me.
I know all those have been swapped into our cars before, but being able to without changing or building a wiring harness or buying a $2K - $3K dollar aftermarket efi system sounds too good to be true.
All the swaps I mentioned are just ideas, I would be interested just for peace of mind with opti failures. I refuse to invest a couple grand in a 24x setup. Not against anyone else using it, but it's not for me.
#18
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I can almost guarantee one friend will be ready to buy as soon as it's ready. He had repeated opti failures a couple years back and I showed him DelTeq's website. He is not at all computer savy or an LT1 guru. Just owns and enjoys a 95 Z28...mostly for the T56. lol I recently had to tell him the $600+ ignition system I talked him into buying seems to be about obsolete since if he has a "brain" failure then it's junk because the company is dead or dormant. If your set-up is a one-man show deal and something happens to you (God forbid) will people who switched be in the same boat as DelTeq owners, or will service parts be something readily available??
I know 4 or 5 local people who would be interested as well.
I know 4 or 5 local people who would be interested as well.
#19
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With the signal conditioner I'm using... the hi res signal should be good accurate to >10,000, but obviously the stock style coil ain't gonna work up there. I've been talking to an electrical engineer who likes doing DIY efi stuff, and we've be thinking of a possible fix for the stock pcm 7000 rpm injector driver limit
If that pans out I have a 7500rpm capable HR combination im working on as well.
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