Alcohol Injection

[BarbeeT]

Hi I have an 84 GN with alittle work done to the motor, and I want to put alky on it. Ive heard that I need to upgrade my ignition, and computer to 86,87 is that true? will it work without it? Is it something I could do myself? When it comes to getting it tuned whats the best way to go about getting that done? any info would be great, Thanks alot.

 

[BRAD_PADGETT]

Hi I have an 84 GN with alittle work done to the motor, and I want to put alky on it. Ive heard that I need to upgrade my ignition, and computer to 86,87 is that true? will it work without it? Is it something I could do myself? When it comes to getting it tuned whats the best way to go about getting that done? any info would be great, Thanks alot.

In order to run meth on a hot air you do need to upgrade the ign coil module/pak, computer, chip, and a 3 bar MAP(comes with the Razor kit as ordered). Yes you can do it yourself(I did it and I am a CPA). You are looking at easily $1200 before the tune no labor included in price. The basic tune is easy with a scan tool borrowed. If you are still interested send m a PM. Take-care- Brad

 

[BRAD_PADGETT]

I forgot: you need to upgrade the MAF to an 87 -best way is a used LS1 maf and a translator. Brad

 

[cool 84]

I've never heard of upgrading the coilpack on an 84. What's the reasoning behind this? I had a pretty healthy motor and the stock ignition worked fine.

 

[turbo6x2]

For one the coil pack for an 84-85 is becoming very hard to find, another is you can do this pretty simple with the caspers conversion for this and the coil pack for an 86-87 is a whole lot cheaper.

 

[BRAD_PADGETT]

I've never heard of upgrading the coilpack on an 84. What's the reasoning behind this? I had a pretty healthy motor and the stock ignition worked fine.

I coverted to the 86/87 ign when installing Alky because Julio at Razor told me to do so. I did and promptly sold my 85 ign. Brad

 

[cool 84]

That's very interesting. I'll have to ask Julio what the reason is. I always thought the 84-85 coilpack was just as strong. Maybe this was why mine would always misfire above 14psi with a stock plug gap and 19psi with a very small plug gap. I've been sitting on about 10 86-7 packs and 3 84-5 packs and modules so the conversion would've been nearly free.

 

[boostmaster]

Coil

That's very interesting. I'll have to ask Julio what the reason is. I always thought the 84-85 coilpack was just as strong. Maybe this was why mine would always misfire above 14psi with a stock plug gap and 19psi with a very small plug gap. I've been sitting on about 10 86-7 packs and 3 84-5 packs and modules so the conversion would've been nearly free.

The 84-85 coil pack is actually much stronger than the 86-87 thats why there is a resistor in the wiring harness that supplies power to the module in the 84-85 to tone it down a bit. With the adapter from Caspers they recommend that you remove this resistor. I would much rather run my 84-85 coil pack with alky and take advantage of more fire power with alky. But as stated if you can find one new they run in the neighborhood of 600.00 + dollars.

 

[BRAD_PADGETT]

I did not bother screwing around with the pink resistor. I merely installed the Caspers coil module hot wire kit and bypassed the resistor. One way around this issue. Take-care. Brad

 

[cool 84]

The 84-85 coil pack is actually much stronger than the 86-87 thats why there is a resistor in the wiring harness that supplies power to the module in the 84-85 to tone it down a bit. With the adapter from Caspers they recommend that you remove this resistor. I would much rather run my 84-85 coil pack with alky and take advantage of more fire power with alky. But as stated if you can find one new they run in the neighborhood of 600.00 + dollars.

That's pretty much what I've heard too. I have two of the 84-5 packs and modules. Since I've done the conversion, I may be the first to try and run an 84 pack on an 87 setup...

 

[Razor]

May also have to do with communication protocol between the ignition module and the 86/87 ecm. Not the strength of the coil pack.

There is an old saying what works for someone may not work for someone else. On the 86/87 stuff.. keeping it all 86/87(ecm,ignition module,MAF) there can be no issues.