Alcky vs meth vs ?

[Turbo V6 Camaro]

hello

i know i don't have a GN but i'm in uncharted area's with my camaro.

so i'm hoping you guys could lend me som good advice like like time i posted

what are the advanages/ disadvange of running alck rather then meth or vise versa

Goals
10.99 in 1/4 11.5-11.6 this season

set up
Master Power super 70 Turbo .70 cold/ .68 hot p-trim

currently running 17 PSI and going up to 20 PSI very soon want the injection for the added octane and cooling effect so i can up my timing also

so please school me

 

[JoeNational]

I know I am probably not really answering your question but I just finished my installation of my ALKY kit and I bought 5 gallons of meth and got some on my hand and oh my god extremely cold. So i can only imagine how dense it will make the charge of air from the IC into the motor. I have also read a lot that people much rather use Meth then anything else. Razor for example is running in the 10.50's with meth. hope this helps a little

Cant wait to be in the 25psi club.

 

[Turbo V6 Camaro]

I know I am probably not really answering your question but I just finished my installation of my ALKY kit and I bought 5 gallons of meth and got some on my hand and oh my god extremely cold. So i can only imagine how dense it will make the charge of air from the IC into the motor. I have also read a lot that people much rather use Meth then anything else. Razor for example is running in the 10.50's with meth. hope this helps a little

Cant wait to be in the 25psi club.

problem is i have to spray in the TB GM thought it was a good idea to put our MAF in the TB

thanks for the info thus far

 

[Turbo V6 Camaro]

TTT any others

 

[Pablo]

"alky" refers to the word Alcohol

Alcohol is a general term that includes a number of chemicals

Methanol is a form of alcohol

just like Ethanol is a form of alcohol

and Isopropyl is a form of alcohol

I'm assuming you mean another version of alchol compared to methanol, like say Ethanol vs Methanol.

Ethanol is the stuff thats typically labeled as Denatured Alcohol at the hardware store but its not very consistent in what it is denatured with and in what quantities. You can also get Ethanol from an E85 station as its 85% Ethanol.

Ethanol has a numerically higher Stoichiometric air fuel ratio. This means that ethanol is going to affect your air fuel ratio to a greater extent than methanol. For a given amount of ethanol, you are going to have to remove more fuel from your chip than if you added the same amount of methanol.
That applies to an alcohol injection system, if you were to run straight ethanol through the injectors you would have to run more than if you ran gasoline.
The reason for this is that ethanol has a greater concentration of oxygen in it than gasoline. For example youll need to run something like 9:1 (somewhere near that anyway) air fuel ratio with ethanol to get the same burn you would get with a 14.7:1 afr running on gasoline.

Methanol is more oxygenated than ethanol and thus requires even more methanol for the same burn, meaning the same efficiency of burn (both parts fuel and oxygen are consumed equally) but not neccessarily the power output.

There are many other properties, like latent heat of vaporization, which play an important role. Latent heat of vaporization is the amount of heat absorbed when something goes from one state to another, like from a liquid to a vapor. This is what makes your finger cold when alcohol evaporates off of it. Methanol has the highest latent heat of vaporization of alcohols that I know of which makes it highly desirable in our application.

 

[Turbo V6 Camaro]

"alky" refers to the word Alcohol

Alcohol is a general term that includes a number of chemicals

Methanol is a form of alcohol

just like Ethanol is a form of alcohol

and Isopropyl is a form of alcohol

I'm assuming you mean another version of alchol compared to methanol, like say Ethanol vs Methanol.

Ethanol is the stuff thats typically labeled as Denatured Alcohol at the hardware store but its not very consistent in what it is denatured with and in what quantities. You can also get Ethanol from an E85 station as its 85% Ethanol.

Ethanol has a numerically higher Stoichiometric air fuel ratio. This means that ethanol is going to affect your air fuel ratio to a greater extent than methanol. For a given amount of ethanol, you are going to have to remove more fuel from your chip than if you added the same amount of methanol.
That applies to an alcohol injection system, if you were to run straight ethanol through the injectors you would have to run more than if you ran gasoline.
The reason for this is that ethanol has a greater concentration of oxygen in it than gasoline. For example youll need to run something like 9:1 (somewhere near that anyway) air fuel ratio with ethanol to get the same burn you would get with a 14.7:1 afr running on gasoline.

Methanol is more oxygenated than ethanol and thus requires even more methanol for the same burn, meaning the same efficiency of burn (both parts fuel and oxygen are consumed equally) but not neccessarily the power output.

There are many other properties, like latent heat of vaporization, which play an important role. Latent heat of vaporization is the amount of heat absorbed when something goes from one state to another, like from a liquid to a vapor. This is what makes your finger cold when alcohol evaporates off of it. Methanol has the highest latent heat of vaporization of alcohols that I know of which makes it highly desirable in our application.

okay that explains it better

since i ahve the SII motor i can tune it no chip need... i'm going meth i guess.... now where should i aim my AFR? with this increase or decrease with no other changes? right now i tune 11.8:1

 

[Pablo]

if you are using a wide band then 11.8 is gonna be around the ballpark but every engine is different

the wide band just measures lambda btw so you basically will just be running it at the same (or pretty close) displayed AFR as you would with gasoline since the number displayed is not your actual air fuel ratio, its just an extrapolated number

 

[Razor]

problem is i have to spray in the TB GM thought it was a good idea to put our MAF in the TB

thanks for the info thus far

You cannot spray through a MAF. You have to spray after the MAF. Your options on this are a few. One is to install the nozzle after the TB and then use a solenoid to shut the liquid off when not spraying. The other is to install another throttle body and run a separate MAF like an LT1. The advantage to running a separate MAF is a solenoid isnt needed. But this adds complexity to your install.. something I guess your used to now

The other things not mentioed is how your monitoring your "knock" activity, as this is where your efforts need to be concentrated.

HTH