100% Meth Injection Vs. Water/Meth Mixture

[ducttape]

What are the pros and cons of each? Looking into a Meth setup, trying to decide which to go with.

Built motor, trans, stall. Procharger (D-1SC) setup.

Who has what and why did you go with it?

[lt1z]

100% is the only way to go.

[GMTURBO]

You'll get much better cooling with 100%.

[Silver SS]

I use a 50/50 mix and it works great for cooling. If you go 100% and have a pump failure or clog a nozzle I would think it would result badly. Matt. Why do you recommend 100% methanol? Isn't it more corrosive with 100% methanol?

[Rat Raceway]

Meth should be used as an octane enhancer before a way of cooling the intake charge.
IMO.

[lt1z]

Originally Posted by Silver SS

I use a 50/50 mix and it works great for cooling. If you go 100% and have a pump failure or clog a nozzle I would think it would result badly. Matt. Why do you recommend 100% methanol? Isn't it more corrosive with 100% methanol?

It is a band aid for pump gas. You want it to work as well as possible and you can put safety features in the tune if you spray in front of the IAT sensor.

[ducttape]

I am running the V1 HOB kit, but changed out the intercooler setup to make it more efficient. I am running a 4" intake into the supercharger and 3" intercooler tubing and into the intake. The intercooler is larger now than the original V1 intercooler.

I have seen 16 pounds of boost on the boost gauge after the upgrades and would like to put the Meth injection on it before I get it all retuned and setup. It is parked for now awaiting the Meth injection setup and a tune.

I just have to figure out which direction I want to go and find someone that can tune it.

[lt1z]

Originally Posted by ducttape

I am running the V1 HOB kit, but changed out the intercooler setup to make it more efficient. I am running a 4" intake into the supercharger and 3" intercooler tubing and into the intake. The intercooler is larger now than the original V1 intercooler.

I have seen 16 pounds of boost on the boost gauge after the upgrades and would like to put the Meth injection on it before I get it all retuned and setup. It is parked for now awaiting the Meth injection setup and a tune.

I just have to figure out which direction I want to go and find someone that can tune it.

Get an Alky control kit and go with someone that has tuning experience with meth.

[ducttape]

You wouldn't know of anyone in the southeast would you? I know of a couple tuners, but not sure if they have any experience tuning meth systems. I don't think they do. And I don't want to be their experiment either.

[lt1z]

Originally Posted by ducttape

You wouldn't know of anyone in the southeast would you? I know of a couple tuners, but not sure if they have any experience tuning meth systems. I don't think they do. And I don't want to be their experiment either.

Try Hinson Supercars they are in AL. I have no direct experience though.

[Silver SS]

Did you change the intercooler or just upgrade the piping? I have an F1D with a built 416 pushing 15-17lbs of boost on a dedicated drive. You have to have belt slip if you have the V1 bracket

[ducttape]

Changed the intercooler and upgraded the piping. It is running a belly mounted intercooler setup like Steve (Evill SS) had on his which is larger and reduces the length of the intercooler tubing as well over the V1 setup. I wish I had the dedicated drive setup, but I don't want to pay that much for the bracket's. I'll just make due with what I have for now.

There is some belt slip on decel after WOT, but I have only went WOT a handful of times since I upgraded it and won't be driving it much until I get Meth installed and retune it. I keep the belt tightened up like it says in the manual, but it's not going to be as good as a dedicated drive setup.

I was told it was setup for 8-10 when I bought the SS. It acts like a totally different animal when you go WOT at 16, which I only did to see if I would get an increase after the intercooler upgrades.

[Frans96ss]

Originally Posted by lt1z

100% is the only way to go.

Agreed. We run 100% meth in everything we build. VP M1

[Alvin]

100% meth. The car should need it too. Its not going to pickup anything if the IAT's are already cool and timing is not an issue. I just finished tuning a 2010 turbo car with a alcohol kit 50/50. I told the guys not to do it since I already had 18-20 degrees of timing in it with no knock and the IAT's where only going from 99 F to 120F with no alcohol injection. It made less power than without the water/alcohol. One day people will start listening to the tuners on this!

A car that needs it will be octane limited or have high intake air temps.

[ducttape]

This is exactly why I posted the question. I wanted to get the input from tuners and people that had setups in place already.

[TrailBlazer SS AWD]

Matt at Tune Time Performance in Toms River has my setup spraying 100% Meth Injection. When I asked why is isn't a 50/50 mix his answer to me was "Why would you want to spray something into your motor that doesn't burn?"

If your Meth setup is all under the hood I'd say do a 100% setup. But if you are installing a tank inside the vehicles cabin I would run a 50/50 mix.

100% = Extremely Flammable
50/50 Mix = Non Flammable

If ever an accident occurs I would hate to think of how dangerous it would be to get doused with a highly flammable liquid while possibly trapped in the vehicle and some sort of spark to ignite it.

But that's just me. I'm more concerned with my safety than I am of how much extra timing I can run.

[APSGTO]

Originally Posted by Silver SS

I use a 50/50 mix and it works great for cooling. If you go 100% and have a pump failure or clog a nozzle I would think it would result badly. Matt. Why do you recommend 100% methanol? Isn't it more corrosive with 100% methanol?

Meth can be tuned for incase the pump fails you just got to relocate the IAT sensor to about 2" down stream of the meth injection point. Most of the kit suppliers have the IAT relocation harness available for about $80.
OP I've got an aggressive dual nozzle set up and based on the drop in percent of injector DC, in my case roughly 20% of my fuel is 119 octane VP M1 meth. This mixed with 80% 93 and you are at about 98.X octane. Now as far as the cooling benefit, IAT's on a D1(@12-16psi) should drop from about 30-40 over ambient to about 20-30 below ambient temps after meth injection. Now that is a huge drop in temps and can be tuned to pull timing(as temps rise) in the case of pump failure.

Originally Posted by Rat Raceway

Meth should be used as an octane enhancer before a way of cooling the intake charge.
IMO.

Why so? Have you spraying post blower yet? I don't think the added octane is that much. 3-5 octane numbers at best if you are really aggressive with it. I'd think the 70 to 80 degree temp drops would be just as helpfull at allowing more timing as a meager bump in octane would.

[Bullnettles]

The first injection was water to cool the engine in WWII I think. Then, they discovered meth works better, so they started using it. 100% meth gives both octane and cooling. Win/win. Water had it's place, and has now been replaced.

[TrailBlazer SS AWD]

Originally Posted by Bullnettles

The first injection was water to cool the engine in WWII I think. Then, they discovered meth works better, so they started using it. 100% meth gives both octane and cooling. Win/win. Water had it's place, and has now been replaced.

The first injection was water only, but they discovered that the water froze in the high altitude and cold climates. So adding a 50% mix of meth prevents it from freezing. Just like wash fluid with it's 20% blend of Meth.

[nastytbss]

Originally Posted by TrailBlazer SS AWD

The first injection was water only, but they discovered that the water froze in the high altitude and cold climates. So adding a 50% mix of meth prevents it from freezing. Just like wash fluid with it's 20% blend of Meth.

Well put! I agree with the safety of 50/50 mix versus 100%...at least on a street truck