ECM And Ignition Module Availability/ replacement

[A26B]

Originally Posted by Corvette95

Whats the work around for the first #500 VIN's this DIS won't work with? I remember reading about a different gap in the crank sensor I believe but can't recall right off (asking because I have a pre-500 90). Thanks

The workaround is removal of the spacer under the Crankshaft Position Sensor. Always a good idea to measure the sensor length & the depth to the crank reluctor wheel to insure the gap is correct (0.020" ~ 0.050").

The "shim" on the few early 1990 models I have seen, was stuck to the block, so you may have to look close to see it, if it is still there.

[-=Jeff=-]

Originally Posted by A26B

Yes.

The DIS Module development project has been suspended. We (Graham Behan & I ) were at a difficult decision point whether to proceed with the project or not, due entirely to the cost feasibility.

During our evaluation, a sizeable inventory of new, OEM DIS Modules became available and was acquired by Jerrys Gaskets. The cost was low enough that we could sell the new, OEM modules for less than our cost for the modules we were developing.

The critical shortage of DIS Module has been alleviated for the present, and the price point is at least bearable.

Let's just hope people don't just buy them up to hoard them. then we will be back to where we were before.

since this sounds like a positiove and the fact that the DIS is quite stout, now if we can just find a fully working ECM replacement (Yes I know of DIYAutoTune, but technically it is not 100% fully working)


EDIT: to Add, I am sure you and Graham are doing this, but please Archive all your work for that DIS in case it needs to be revisited

[HAWAIIZR-1]

I am really glad I bought my NOS NIB GM DIS module back in 2003 when I got my first Z. I paid $400 back then and thought that was ridiculous. I have a spare ECM that was about $200 back then. I hope I never need them. Now no regrets seeing how valuable they are now.


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[Erik]

Originally Posted by -=Jeff=-

EDIT: to Add, I am sure you and Graham are doing this, but please Archive all your work for that DIS in case it needs to be revisited

Definitely. This project can't be allowed to fall by the wayside. If in the future, DIS modules start failing regularly, The current supply will dry up, and no option will be available we are screwed and the value of our cars will plummet. If my choice becomes a $2000 modern component, reliable DIS module or parking my ZR-1 indefinitely, the choice becomes very easy.

[1991 Corvette ZR-1]

Considering you can spend $2,000+ on a Holley HP setup just to get started, I would gladly pay the same to be able to drive my ZR-1 past the expiration date of some of the old components. Hopefully the project gets revisited sometime in the future. Hate to hear that it has been shelved for now.

[Erik]

Just wanted to add a big thank you to Jerry for getting these for us. This could not have been an inexpensive undertaking for him to source these parts, especially with the knowledge that they likely will be sitting a while.

[A26B]

FYI:
The work product developed to this point was acquired at significant cost of money, time & effort. It goes without saying that the DIS Module project will not be tossed away & forgotten. The decision to suspend development was based on the current circumstances and in the best interest of all concerned.

Virtually every new part brought to market by Jerrys Gaskets undergoes a stringent economic evaluation with multiple factors including estimated sales volume & frequency over time to establish manufacturing quantity and ultimately the most favorable cost per item. Most of the parts made are produced with economic factors that would never justify production standing alone. The cost is supported by revenue from all other sales. No other company does that, instead viability to manufacture is based on each item individually. The limited sales of parts for a very low production engine like the LT5 do not meet standard economic parameters. Otherwise, everyone would be doing it.

As an example of one of the most extreme economics so far, for a part that had become virtually extinct and no options present;

Primary & Secondary Chain Guide Facings
To meet minimum manufacturing requirements, we had to produce 2,000 of each facing and there are 6 different pieces. Those parts were completed in 2014. To date, sales are 32 for each. The projected economics?? 442 months (that's 36.8 years) to payout. That's break-even, no profit, no time value of money, no compensation for the R&D that went into the project. My great-great grandchildren will inherit facing inventory. It needed to be done.

[HAWAIIZR-1]

Is anyone using MOTEC M1 or only in Japan?


https://www.motec.com.au/m1-series-o.../m1s-overview/

Open in google chrome for translation.


https://motec.exblog.jp/29480450/?fb...P9aW4mfVH5Azlk


So this eliminates the ECM and the DIS?


https://youtu.be/C4uBOvGq7jA



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[tf95ZR1]

Originally Posted by A26B

That's break-even, no profit, no time value of money, no compensation for the R&D that went into the project. My great-great grandchildren will inherit facing inventory. It needed to be done.

As always, thank you Jerry for all that you do for our hobby. I do, though,
remember the smile on your face being around all us ZR-1 wackos in
Bowling Green. Especially those from Mercury Marine! You are one of us.

[HAWAIIZR-1]

Jerry, Graham and many others, yes, thank you for all the contributions to keep the dream alive and the legend living. If not, I don?t know what the future of these cars would be even this far and beyond more so. It?s great that a lot of folks are willing to not give up on or be scared to try to keep these cars going.


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