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Go Back   IWSTI.com: Subaru STI Forums > STi Technical Discussion > Engine, Power, & Performance > Water-Meth Injection / Nitrous & Intercooler Cooling


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Old 02-20-2008, 10:09 PM   #1
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Default got a theory but it might be stupid so I will ask haha

I see some people are very nervous about running meth injection for the obvious reason of blowing your motor even though lots of people do have great success with it. Another comment I see is people saying its like running race gas.

Well could you run race gas through the meth kit rather than meth? I know if you had 100 octane in it that you could not get a ratio right to were you could tune it like it was striaght 100octane like as with meth but could it possibly work? I mean you know your injector size and I am sure you can get a rough calculation somehow through mathmatics that would give you and idea of how much race fuel to add through the meth kit to say turning 91 into 95 or 93 into 97. I am just throwing numbers out there. Since you would have fuel instead of meth in a tank and again I am assuming that meth thanks do not have breathers on them I would assume some sort of an actual fuel cell would be needed for the meth kit to draw from. I doubt any o-rings would need to be changed since meth is much more harsh than race gas.

I think if this was possible it would be much more convenient than running down to a special gas station to fill up your tank with 100octane hoping you have almost no regular gas in the tank so you get that octane your looking for. Granted filled ups might be a pain because meth is easier to get a hold of I think for fill ups since most gas stations dont carry race gas at the pump. But I assume with a decent size fuel cell say 5 gallons that would probably get you plenty of mileage for quite some time.

I do realize though as I think i mentioned before you are not going to get the full benefit as you would with meth but I think since its just normal unleaded gas your would be spraying if you get the ratios right with good afr's wouldnt it be nice to drive a car you know wont have any meth related problems at something that would run possibly 95+ octane at all times. Feel free to destroy my idea if need be or flame me for not searching first if someone already came up with this idea.

Brandon


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Old 02-20-2008, 11:13 PM   #2
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Default Re: got a theory but it might be stupid so I will ask haha

You still have most of the same problems. Number 1 problem with meth, is failure of the meth system be it a clogged line a bad pump. And would be the same if you could run race gas out of a meth system. As you are tuned for that extra octane. Plus it would need a totally differnt system and thinking about it right now i dont see any possible way of it working.
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Old 02-20-2008, 11:18 PM   #3
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Default Re: got a theory but it might be stupid so I will ask haha

ok i can understand the possibility of clogging as with any system but how so would it need to be a totally different system? Higher pressure to atomize the fuel better or something else?
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Old 02-21-2008, 09:43 AM   #4
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Default Re: got a theory but it might be stupid so I will ask haha

Correct. The pump wouldnt be able to hanlde the higher pressure needed to push that much fuel out. and you would need different hose diameter with different nozles to atomize the fuel. And im thinking you would need to inject into each cylinder wich is possible but very hard and even harder to tune since you need each one to have same fuel to air mixture
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Old 02-21-2008, 10:35 AM   #5
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Default Re: got a theory but it might be stupid so I will ask haha

Quote:
Originally Posted by halfelite View Post
Correct. The pump wouldnt be able to hanlde the higher pressure needed to push that much fuel out. and you would need different hose diameter with different nozles to atomize the fuel. And im thinking you would need to inject into each cylinder wich is possible but very hard and even harder to tune since you need each one to have same fuel to air mixture

doesn't the hydra have the capability of running another set of injectors? I guess that would be a better way to inject fuel in that manor then?
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Old 02-21-2008, 11:45 AM   #6
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Default Re: got a theory but it might be stupid so I will ask haha

yes most systems can handle at least 2 nozzles but you still have the wrong kind of pump and hiflow valve attatched.
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Old 03-06-2008, 03:02 PM   #7
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Default Re: got a theory but it might be stupid so I will ask haha

An other problem that you would be facing is that Gasoline, no matter what octane, is highly volatile. You would need a way to vent the gases from the cel to the outside and that could be highly dangerous if you don't use the proper equipment. Meth is miscible in water so it won't evaporate as easy as pure meth alone. Basically you would need to design a new system like the statement above.
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Old 03-24-2008, 05:04 PM   #8
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Default Re: got a theory but it might be stupid so I will ask haha

You might as well get a wet nitrous kit without the nitrous.
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Old 05-04-2008, 06:36 AM   #9
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Default Re: got a theory but it might be stupid so I will ask haha

Quote:
Originally Posted by CenCali07STI View Post
I see some people are very nervous about running meth injection for the obvious reason of blowing your motor even though lots of people do have great success with it. Another comment I see is people saying its like running race gas.

Well could you run race gas through the meth kit rather than meth? I know if you had 100 octane in it that you could not get a ratio right to were you could tune it like it was striaght 100octane like as with meth but could it possibly work? I mean you know your injector size and I am sure you can get a rough calculation somehow through mathmatics that would give you and idea of how much race fuel to add through the meth kit to say turning 91 into 95 or 93 into 97. I am just throwing numbers out there. Since you would have fuel instead of meth in a tank and again I am assuming that meth thanks do not have breathers on them I would assume some sort of an actual fuel cell would be needed for the meth kit to draw from. I doubt any o-rings would need to be changed since meth is much more harsh than race gas.

I think if this was possible it would be much more convenient than running down to a special gas station to fill up your tank with 100octane hoping you have almost no regular gas in the tank so you get that octane your looking for. Granted filled ups might be a pain because meth is easier to get a hold of I think for fill ups since most gas stations dont carry race gas at the pump. But I assume with a decent size fuel cell say 5 gallons that would probably get you plenty of mileage for quite some time.

I do realize though as I think i mentioned before you are not going to get the full benefit as you would with meth but I think since its just normal unleaded gas your would be spraying if you get the ratios right with good afr's wouldnt it be nice to drive a car you know wont have any meth related problems at something that would run possibly 95+ octane at all times. Feel free to destroy my idea if need be or flame me for not searching first if someone already came up with this idea.

Brandon

IMHO, race gas --> meth any day, for me anyways.
If you heading to the track or off road event, filled her with RG and crank up the boost (within reason of course).
I have nothing against meth kit, I feel a little safer with having race gas in my fuel tank.
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Old 05-04-2008, 03:12 PM   #10
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Default Re: got a theory but it might be stupid so I will ask haha

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Originally Posted by 05'WRB View Post
I feel a little safer with having race gas in my fuel tank.
+ 9.48x10^14


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