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lt1 and optispark

Posted: Mon Jul 13, 2020 10:16 am
by krillian
Hey.

Did a search but was not sure of the outcome..So..

What magic do i need to have and make my S80 pro work with Gm lt1 optispark ignition?

I know it is 360 tooth with no missing and inner circle is 4 different length slots.

Re: lt1 and optispark

Posted: Mon Jul 13, 2020 12:46 pm
by Alex DTA
Do you have any links to an image of the trigger?

Re: lt1 and optispark

Posted: Mon Jul 13, 2020 2:13 pm
by stevieturbo
Looks like they've done the same as that horrible Nissan setup !!!

http://www.superchevy.com/how-to/0310ht ... modifying/

Re: lt1 and optispark

Posted: Mon Jul 13, 2020 2:20 pm
by stevieturbo
or get rid of it

https://www.eficonnection.com/home/cate ... ignal-kits

https://chevythunder.com/lt1_electrical_page.htm

MS gives wiring details.

https://www.diyautotune.com/support/tec ... 1-lt4-l99/


Although some posts online suggest people simply make a new trigger wheel to suit whatever it is they're doing. If you could get someone to laser cut or waterjet something out with bigger and fewer teeth in a more typical or known pattern

Re: lt1 and optispark

Posted: Mon Jul 13, 2020 2:38 pm
by krillian
Alex DTA wrote:Do you have any links to an image of the trigger?
No i have not. Still not hooked up to engine.

Is power to DTA and just trigger sensor input enough to make it work for test/oscilloscope pic?

Re: lt1 and optispark

Posted: Mon Jul 13, 2020 2:40 pm
by krillian
stevieturbo wrote:or get rid of it

https://www.eficonnection.com/home/cate ... ignal-kits

https://chevythunder.com/lt1_electrical_page.htm

MS gives wiring details.

https://www.diyautotune.com/support/tec ... 1-lt4-l99/


Although some posts online suggest people simply make a new trigger wheel to suit whatever it is they're doing. If you could get someone to laser cut or waterjet something out with bigger and fewer teeth in a more typical or known pattern
Ive seen this too.

What i need is something to trigger 1 coil. and dont need seq injection.just a basic lt1 that will end up in a truck for towing/sunday fun.

Re: lt1 and optispark

Posted: Mon Jul 13, 2020 5:22 pm
by stevieturbo
People make more user friendly wheels for the likes of the Nissan. If they were a similar diameter, they might be an option ?

https://www.ebay.co.uk/itm/AEM-30-8761- ... 2810152868

What diameter is your wheel ?

Re: lt1 and optispark

Posted: Tue Jul 14, 2020 3:05 am
by Alex DTA
krillian wrote:
Alex DTA wrote:Do you have any links to an image of the trigger?
No i have not. Still not hooked up to engine.
From stevieturbo's post above, it looks like a variation on the Nissan CAS system. This particular one is not supported.
You would need to get a new one cut/fitted. If you don't want sequential anything, then simply use a 24-2-2 CAS trigger, giving the ECU a 12-2 crank signal.
krillian wrote:Is power to DTA and just trigger sensor input enough to make it work for test/oscilloscope pic?
Yes, that's all that's needed.