Alky & N20 on 95 Z28?

[Kain Otdu]

Hi guys,

I read a little blurb on alcohol and its use for turbo cars that a friend of mine posted (Mikel) on Off-topic.net. I thought it was a rather good idea.

I have a 95 Z28 (LT1) Camaro with a little 100 shot on it. It's my daily driver and I'm not going to run a bigger shot on it. I figure the cooling effects of alky on a turbo car would also help in combustion temperatures of a N20'd car.

I was just wondering what experiences you guys have had with N20 and alky? And iif the SMC Enterprises Alcohol injection kit would work for my car?

Any input is greatly appreciated.

 

[HossV6]

Yes about the SMC kit, its not car-specific so it will work on your car. But you'll need to improvise a way to trigger it since its boost activated. The alky will cool the intake along with giving you more octane, so I guess you could run a little more timing to take further advantage of the 100 shot w/o the danger of detonation. Not sure on the gains the alky will give you, but if you decide to go forced induction later on it will be great to run more boost w/o race gas. HTH Later

 

[YGETV8]

I'm no expert, but most of the gains achieved with alky use on a boosted car is to cool down the charge air and combustion temps that are significantly higher under boosted conditions. N20 is already VERY cold going in... much colder than the effects alky can give. I'm thinking you'd be wasting your time trying it, but I could be wrong. Now, throw on a supercharger and we'd have something to tinker with!

 

[Kain Otdu]

Hmmm, interesting guys. I though alky would cool down combustion temperatures somehow. I guess I misread the article. I already know N20 really cools down the intake dramatically.

I might try it though. It sounds like it would be really easy to throw in some higher octane fuel in, instead of putting in another fuel tank and running 110 leaded race fuel.

I might see if I can rig it to spray in alky when I hit an additional button, instead of having it boost activated.

Thanks guys!

 

[Taffy]

I think one of the reasons that folks burn pistons with nitrous is because they try to run too big a shot on 92 octane. I think (Just my opinion) is that you will be able to run the 100 shot and make the engine live longer, or run a larger shot and not have to worry about detonation cause of the increased octane of alcohol. Can not remember the octane of alky, but it is better than 100. Good for a safety cushion if nothing else. ERIC.

 

[PRSRIZD_V6]

Running alky supplimentation to a wet nitrous system will help a little but I dunno how much more than just high octane race fuel.

Your right that the alky/water that we inject lowers combustion "temperature" in that the Heating Value (Qhv for those thermodynamically inclined) as a fuel is much lower due to the 50% water that most of us run. This allows us to get away with higher cylinder pressures on lower octane gasoline, though the anti-knock properties of 94octane/Methanol/water are probably very close.

I'm putting a system similar to your's on a friends Camaro SS, it's gonna be a wet system with a 3 gallon fuel cell for 100 octane no lead and a small inline regulated pump to suppliment the fuel. We're looking to shoot 200HP after a lot of tuning (might not get it without leaded gas). It'll have 2-3 wet fogger nozzles ina spacer behind the TB.

Hope to Help.

 

[Kain Otdu]

Originally posted by Taffy
I think one of the reasons that folks burn pistons with nitrous is because they try to run too big a shot on 92 octane. I think (Just my opinion) is that you will be able to run the 100 shot and make the engine live longer,

Thats what I'm running now, the 100 shot for the street. On 93 octane with my cold running plugs, i'll run it all day without a detonation problem. I've helped tear down a friends LT1 to put in a LT4 hot cam in it, and he's been running a 100 shot forever, and his pistons didn't have a mark of detonation on them.

But for the track, I might want to run a 150 shot. Then I'll be dumping in some 110+ leaded fuel to boost octane, that or the alky kit.

Originally posted by PRSRIZD_V6
Your right that the alky/water that we inject lowers combustion "temperature" in that the Heating Value (Qhv for those thermodynamically inclined) as a fuel is much lower due to the 50% water that most of us run. This allows us to get away with higher cylinder pressures on lower octane gasoline, though the anti-knock properties of 94octane/Methanol/water are probably very close.

I'm putting a system similar to your's on a friends Camaro SS, it's gonna be a wet system with a 3 gallon fuel cell for 100 octane no lead and a small inline regulated pump to suppliment the fuel. We're looking to shoot 200HP after a lot of tuning (might not get it without leaded gas). It'll have 2-3 wet fogger nozzles ina spacer behind the TB.

Very cool, thanks for the info! I was thinking about the extra 3 gallon fuel cell full of high octane and use it for the "wet" side of a N20 system, but figured it would be too much work.

As for the 200 shot on your friends SS, he should be able to do that with a single nozzle and solenoid. The NX wet kit's solenoid that I have is massive enough to handle it, and the NX shark nozzle can deliver that much N20 by itself. I know a person with a FoxBody Stang that runs a 250 shot on the same solenoid and nozzle I have. Just food for thought.

 

[PRSRIZD_V6]

I've never seen them, I'll have to take a look.