Anyone running Meth?

[Jay-Wel]

How often do you guys who are running it have to fill up the tank?

 

[wraithGSX]

Depends on how much you run past the point where you need it. The fewer times you run the boost up that high,the less you'll use. How fast you go through it will also be determined by how big your nozzles/injectors are as well.
Also,if you're going to run alcohol,use ethanol,not methanol. It's less corrosive,your cylinder walls tend to rust when it sits not running,due to the water content of meth and your alky system will last longer. That's been my dealings with it with the guys who ran it in my circle.

 

[clipto]

When I use to run a meth kit it would last a long time "if" I kept my foot out of it.It was a 5 gallon tank but the usage of it depends on your driving.Never really liked or cared for meth kits tho that's just my opinion.

 

[Jay-Wel]

With ethanol can you still run it 50/50 with water, or would it be better to just run ethanol? How do I find the point were I wont need to run/inject anymore?

 

[nightmares GS-T]

Methanol and Ethanol are not by any means the same. Meth is injected in while ethanol is used to replace gasoline altogether. I dont know of anyone injecting ethanol. As for the range that all depends on how you drive and how much boost you see while daily driving. My 2 gallon tank lasts me a few months bc I rarely hit enough boost for it to kick in while daily driving.

 

[wraithGSX]

Everyone I know here is runnin ethanol. It may require a different nozzle with a mist kit,but it is possible. Most of us run 2 rails,running 93 octane in the primary,and E85 or E100 in a second rail on the intake.

 

[dexterholland04]

Why? That seems kind of pointless to me. It would just be cheaper to buy everything to run e85 normally, or to just run pump gas and spray methanol. You would get the same performance and only would have to pay for one fuel setup or the other.

 

[Jay-Wel]

Everyone I know here is runnin ethanol. It may require a different nozzle with a mist kit,but it is possible. Most of us run 2 rails,running 93 octane in the primary,and E85 or E100 in a second rail on the intake.

So your saying that your injecting e85, how would that be any different then running methanol? what would the difference be? if any

 

[josh1095]

a bit off topic, but the whole purpose(correct me if im wrong) of injecting meth is to cool the intake temps right? stop det. ive had this idea i might try later. running a water pump in the back up to a rail that throws mist on the IC. this would drastically lower intake temps. its proven, i just havent heard mention of it. its so simple to do too. #### injecting meth in ## stream, cool the air by other means. unless ## shooting for 500 plus HP that is, then im sure meth is necessary. i could fab up an IC mister in no time and guarantee 20+ degree drops in temps. kind of like a wind chill factor.

 

[Jay-Wel]

a bit off topic, but the whole purpose(correct me if im wrong) of injecting meth is to cool the intake temps right? stop det. ive had this idea i might try later. running a water pump in the back up to a rail that throws mist on the IC. this would drastically lower intake temps. its proven, i just havent heard mention of it. its so simple to do too. #### injecting meth in ## stream, cool the air by other means. unless ## shooting for 500 plus HP that is, then im sure meth is necessary. i could fab up an IC mister in no time and guarantee 20+ degree drops in temps. kind of like a wind chill factor.

Look up Cry02 its been done and does show some benefits but unless you are running it 24/7 (or consistent rather) so you could tune around it like you can meth I doubt it would be much of use (plus) you'd show better egt's if you just sprayed right behind your TB

 

[josh1095]

true on the egts, didnt think of that. what exactly does a high egt do? assuming ## afrs are good? i know high egts from piloting aircraft means a lean condition. but if ## afr is good and egt is high, would it crack the ex mani?
it would prob make the turbo less efficient the more i think of it, even if it didnt damage anything. possibly wear out turbo bearings and seals quicker.
sorry to hijack, im reading the haynes manual and typing simultaneously to learn as much as possible about forced induction engines

 

[Jay-Wel]

By no means am i a tuner, but the proper place to inject is behind the TB to my knowledge theres not a temp sensor in the manifold so the only hard data you could look at is the egts, someone chime in if they know something different please.

 

[josh1095]

u are correct. the closer u can get the meth to the chamber the better. it will siphon heat out of the gas thats being forced in. if u can, in the future, check the air fule ratios. that will tell alot

 

[blizz99]

By no means am i a tuner, but the proper place to inject is behind the TB to my knowledge theres not a temp sensor in the manifold so the only hard data you could look at is the egts, someone chime in if they know something different please.

Most people place the meth nozzle between 6-8" from the throttle body.

As far as the temp sensor goes, there's 3 places people have put IATs. Before the meth nozzle, after the nozzle, and in the manifold.

It's really preference but logic says the best place to put an IAT is in the manifold. That way the sensor has time to read the temp of the air after the water injection and the temp of the air actually going into the cylinders.

Placing it before the meth, you won't see the affects of the meth injection at all.

After the meth(on the t/b elbow), the meth won't have enough time to get dispersed into the system for a correct reading. I'm unsure if the IAT sensor would get damaged because of the meth hitting it.

u are correct. the closer u can get the meth to the chamber the better. it will siphon heat out of the gas thats being forced in. if u can, in the future, check the air fule ratios. that will tell alot

This is not necessarily true because if it's too close then the methanol will not have time to dissipate the heat.

 

[wraithGSX]

All I'm saying is,I have seen rust,and other damage/issues from people who ran meth. If you're gonna run alcohol,ethanol is less corrosive,and the people I know who are running it,haven't had any of the things happen that the meth caused.
I have SEEN it,with a boroscope down the spark plug hole. Rust on cylinder walls,that isn't there on a car not running anything,or is running ethanol. You all do what you want,I'm just trying to spread the knowledge.

 

[floader]

Rusted cylinder walls from meth injection? That's a new one.

As far as usage goes, I go through about a gallon of 50/50 meth/water mix every two tanks of fuel. I have a snow progressive kit that comes on at 8psi and is full on at 20. I have snows biggest jet in it, 625ml I believe.

I run 28psi flowing 48lbs per min on 93 pump with zero knock.... I have no doubt I could run more boost, but I fear for the stock bottom end.

The meth does work, but just like everything else, don't half ass it.

 

[blizz99]

^ You got to him before I did, haha!

 

[Shadow21]

I run meth and i get a good bit of use out of one gallon. My car doesnt get driven much, but i would say that one gallon will easily last me 3 fill ups. I run the smallest nozzle on very low boost though.

 

[wraithGSX]

Yes,rust on cylinder walls,oddly enough only on cars using methanol,hmmm...just because you haven't seen it,doesn't mean it can't/doesn't happen. Again,I'm just offering my input,you all do what you want.

 

[Jay-Wel]

Thanks for the input guys, was gonna run a wally 255 with a pressure switch, would it really make that much more of a difference to buy a kit with a progressive injection?

 

[H@xtGSX]

Everclear works wonders....

 

[zcoh2gdsm]

Everclear works wonders....

i'd be careful on that, it might #### up your car as much as it does your head

 

[H@xtGSX]

You're right.... You don't want to drive a drunk car. WTF


Seriously though, if you dilute it out 60/40 it works very well on a h2o/etoh injection system. It's definitely cleaner than blue dyed window washer fluid.

It is more expensive though... By a lot... and you might be tempted to drink your boost juice...

 

[98zx23369]

i could understand the rust if it was 50/50 mixed. but other than that i see it as one of those myths

 

[Jkorny169]

I had the AEM kit a while back and ran 70/30 meth water. As far as a progressive switch it makes it more "streetable" rather than on/off the pump can ramp up as your boost does.