ALKY Mixture

[system1]

I posted this in the Alcohol, Nitrous and Propane Tech but did not get any response

I just had ALKY installed and I am running about 20 on the boost. 50/50 mixture ALKY / water. 0 knock and o2s a little rich in the 830s started to dial back the flow. Now I have seen 795 on the o2s and around 3 on the knock. If I change the mixture to 70/30 ALKY / water will that help the knock and not make it any richer?

 

[humberto]

Your going to have to test with diff mixtures find out what your car likes.My car likes straight alcohol I have tried diff mixtures and my car performs best with just alcohol.Hope this helps.Do a search on alcohol section and you will find guys useing diff mixtures.

 

[system1]

Thanks for the feedback. Anyone else

 

[justabuickv6]

Just run straight denatured or methanol.

Denatured is $9.99 a gallon at Home Depot. You can get methanol at any race track for about $2.50 a gallon. Methanol cools better too.

 

[kevans]

Originally posted by justabuickv6
Just run straight denatured or methanol.

I would NOT recommend running straight alcohol...

1) It is HIGHLY corrosive and it WILL corrode a lot of your parts. I run 70/30 (meth/water) if I wanna run a REALLY fast number but usually 30/70 (meth/water) on the street just to prevent too much corrosion.

2) There is a HUGE benefit to the water too...it has a "buffering" effect to cool the chamber and control detonation.

Kev

 

[V6POWER]

I know methanol is corrosive, but I didn't know denatured alcohol was. Are you sure of that?

 

[system1]

I called Steve at SMC and he told me to run straight Alcohol. As always thanks for the feedback. It looks like a brewing argument over corrosion.

 

[JeffG]

No argument, it's corrosive. All this stuff is to one degree or another. Water is too. I am willing to trade off some system maintenance because of corrosion to get better performance. Everything else on this car requires maintenance why shouldn't this


During the SEMA show, I talked to the guys a AquaMist about this very subject. They felt that straight water worked best. I pressed them on it because I have found straight alky to work best. They then stated it all comes down to combinations. Because alky has a lower flash point it may actually work better in a turbo system that has (reactively speaking) low intake temps. If you have a car that generates a lot in intake temps (stock turbo/intercooler, etc) you my find that water or some combination of water/alky works best. We didn't get into any specifics because there are so many variables. You just have to experiment.