greentahoe

iTrader: (2)

I made brackets to mount the unit on the passenger side rear and then you simply make a bracket to hold up the bottle from there its just wiring it up Im going to have a good fuel preesure gauge, LC1 XD1 setups this weekemd amd hopefuly finnish up the new headers and Y pipe.

One thing I highly recommend with guys that have some money invested is to use the high and low tables. My truck makes killer power on the low oct tables its just that the high tables are alot more agrressive. The main differences for me where high tables were for max timing and alot of meth
low tables had much lower timing and are fine in the absesnce of meth,

camcojb

I could run my Lightning and KB combo with more timing and denatured alcohol than methanol. Not sure why at all as methanol should be a higher octane rating, but I tested it several times.

You are correct, the two require a completely different tune (maf transfer); methanol will lean it out a lot more than denatured.

Jody

Gmc²

iTrader: (1)

meth will lean it out more? explain please. its higher octain than the denatured alchol right? or is the cooling effect that much more than the addititon of octain?

Bad_Apple

iTrader: (1)

Sup guys yeah I just got my Alky Kit in with Progressive Controller. Im mainly going to run it because my tune is not exactly right and to keep it from spark knockin. My kit came with stainless lines so what do yall think be the best to run straight METH, or denatural alcohol. I figured the METH would be the best.......

thunder550

iTrader: (70)

So 50/50 meth and water will cool better than straight meth?

camcojb

ethanol (denatured alky) and methanol have different properties; methanol will lean the a/f more than ethanol, noticeably so. But this is also with a large jet, may not be so apparent with a smaller nozzle. If you tune the truck for correct a/f WITHOUT the alky on then it doesn't matter as much, as both will be an extra fuel and will richen the a/f. But if you tune it with the alky on then it takes two different tunes between denatured and methanol if you want the a/f to be the same. If you don't mind the denatured being richer then it doesn't matter. With a large nozzle there was close to a point difference in a/f between the two alkys.

Jody

camcojb

Water is a much better heat absorber than any of the alkys. But the alky gives a slight octane boost plus adds additional fueling which can be helpful if you're on the edge of your injectors.

I ran straight water injection on some previous centrifugal cars and it worked great. With the twin screw KB my truck much preferred straight alky as a mix of water seemed to be "blubbery" under higher load low throttle areas like passing in overdrive or climbing a hill without being wot. Others have very good luck with water mixed in. I could run the most timing with straight alcohol and no water on this truck.

Jody

thunder550

iTrader: (70)

So for a roots blower like the Radix...what would probably work best? I purchased 5 gallons of meth, so thats what I'm running right now, but I would love to be able to dilute it, or if stright alcohol would be better, I can make that switch too. What do you guys recommend?

hemifever

50/50 mix is the way to go with meth.

Meth burns at 6:1 a/f whereas gas burns at 14.7:1. My wideband richens as I put in more meth (even though it is said above it "leans" you out). Since meth burns at 6:1, you want to be richer than you would if you were burning straight gas. If you're running 12.0 a/f with gas and start pumping in meth, shoot for an 11.0 a/f rather than leaning up your gas charge to keep you at 12.0. 12.0 with meth is "leaner" than 12.0 with gas due to the burn characteristics. he he. Make sense?

O3GMC

Just to follow up I've decided to use 50/50 water/meth - I've read that its best medium for cooling and octane/detonation deterrent, and is not corrosive with that much water. Another benefit is the cost savings, at this mixture one gallon is $1.38.

No hard numbers yet, but the truck feels very strong with the water/meth, more so than the den.alcohol - real results will be on the dyno this tuesday.