[Deep_Blue]

Something that would mount under the car instead of the trunk?

I like the idea of running methanol, but having a methanol tank in the trunk weirds me out (fumes, fire risk, etc). I like Advan's design but it looks like it installs right into a crumple zone. If you got rear ended hard i wouldnt want to see what happened with that or any other meth tank.

I guess you would have to avoid exhaust lines, and filling might be a pain, but curious if anyone has seen it done on an e90/2 or other platform.

[Torgus]

Originally Posted by Deep_Blue

Something that would mount under the car instead of the trunk?

I like the idea of running methanol, but having a methanol tank in the trunk weirds me out (fumes, fire risk, etc). I like Advan's design but it looks like it installs right into a crumple zone. If you got rear ended hard i wouldnt want to see what happened with that or any other meth tank.

I guess you would have to avoid exhaust lines, and filling might be a pain, but curious if anyone has seen it done on an e90/2 or other platform.

You know where you gas tank is?

[135Pats]

Where would you mount it? Pretty limited space under the car, anything that bulges downwards too much would be susceptible to scraping. The fire risk is largely contained to the engine bay, I've never heard of the actual trunk tank spontaneously combusting. If you’re rear ended with the type of force that would crush a trunk mounted tank, you’re already in a pretty serious piece of trouble. If fire is your concern (perfectly legit concern), just run boost juice. 100% meth is extremely flammable, so I get your hesitance.

[Deep_Blue]

Originally Posted by Torgus

You know where you gas tank is?

further forward than the trunk. Under the back seat is not a crumple zone.

[Torgus]

My point was put it there if you are so worried.

Drain and drop the tank and weld in your meth tank. Expensive and a waste of time but that is the safest place to put flammable fuel, where the engineers who designed the car put it.

There is basically no room under the car. Even if you could find a space I wouldn't want it there in the 1st place. It better be HELLA secure and pray whatever bracketry holds it doesn't rust.

If your accident is bad enough to crush the trunk and puncture your tank and something ignites the meth you are F'd anyways and the car is totaled. I don't think there is enough power in a meth tank to cause an explosion that would get into the passenger compartment but I could be wrong.

[Deep_Blue]

This is the root of my concern. Happened to me a few years ago. Old lady in a Lexus SUV "mixed up her brake and gas" and hit me at a red light doing 30-40. Not high speed but still enough to pancake the trunk of a pretty stout car...

[135Pats]

Glad you were able to walk out of that one, that looks pretty rough. With that being said, I don’t think that would rupture a trunk mounted tank. If it did, it would probably crack it and a leak would spring, it would require enormous force to really blow it open. Under those circumstances, I don’t really see how a fire would start, certainly not quickly. I get your concern, but the scenario in question is so unlikely, and even then the chances of methanol leaking from a trunk and starting a spontaneous blaze are even more unlikely. So it’s about hedging risk. I can tell you that a underside mounted tank wouldn’t be an upgrade from a safety standpoint.

[135Pats]

Again if fire is your concern, run boost juice and an E85 mixture. Still plenty of octane, you get the chemical cooling of Meth and the in-cylinder properties of E85. But no real potential for fire balls.

[Deep_Blue]

Originally Posted by 135Pats

Again if fire is your concern, run boost juice and an E85 mixture. Still plenty of octane, you get the chemical cooling of Meth and the in-cylinder properties of E85. But no real potential for fire balls.

Yeh i might check out Boostjuice. Saw Shiv's video on youtube trying to light it on fire. There are some evo forum posts that disagree. Maybe i'll order a jug and see if i can get it to light.

135, thanks for the thoughtful answers here. One question, if boost juice isnt flammable, what is the risk of it not fully burning up in the cylinder/not fully being expelled with the exhaust stroke? I've seen meth hydrolocks on here before.

[Tony@vargasturbotech]

There already a lot of people running 100% meth in their systems. We ran 100% meth in our stage 3 car. If you are that worried about fire danger just skip meth and run E85

[135Pats]

Originally Posted by Deep_Blue

Yeh i might check out Boostjuice. Saw Shiv's video on youtube trying to light it on fire. There are some evo forum posts that disagree. Maybe i'll order a jug and see if i can get it to light.

135, thanks for the thoughtful answers here. One question, if boost juice isnt flammable, what is the risk of it not fully burning up in the cylinder/not fully being expelled with the exhaust stroke? I've seen meth hydrolocks on here before.

I have no personal experience with boost juice (my HFS-4 setup is sitting in the basement right now waiting for new lines) but I wouldn’t think hydrolock would be an issue. 49% of the product is still methanol which will flash at very low temps, I’d think the remaining water would evaporate almost instantly. Assuming proper atomization I can’t really imagine the water vapor locking up a cylinder. The instances of meth induced hydrolock have generally been the result of a stuck open solenoid or critical pump failure, that’s the type of risk that you just have to accept if you go the meth route. Bottom line- there are dozens upon dozens of folks running meth setups of varying quality and potency with our motor, an almost statistically insignificant amount of them have had serious issues like the one we’re discussing. I think I’ve come across one or two possibly meth induced hydrolock threads here.

You cannot eliminate 100% of the risk associated with injecting a foreign substance into the intake tract. But you can get pretty damn close. I’ll take my chances with blind luck, as I’m confident the system itself is close to flawless.

Like Tony said, if you’re unwilling to accept that risk (which IMO is very, very small), just skip meth and experiment with E85. Only issues there are proper fueling support and dealing with the IAT compensation tables since the car doesn’t know that the ethanol is handling temperature in-cylinder.

[Deep_Blue]

Thanks Tony and 135. Good food for thought. I'm already running ethanol (approx 35%) with no issues.