First off- don't pay attention to the poor man's fugly-mustard-colored sound deadening. I don't mind catching heat from anyone especially since I am learning as I go. I don't plan on competing with this car, I JUST want sound.
Plus it will be covered with another false wall- I hope.

So I have some empty 33lb aluminum LP tanks laying around at work. The valves on the tanks are either shot or leaking so I snatched them up. I am in the process of re-working my bag setup and came across an idea.
I was hoping to use one of the tanks for my air system but, I have a few concerns.



That is tank 1 with 6 holes.


This is tank 2 with only 5.

I do indeed have 2 tanks.

I want to plumb in a valve manifold. Less chances for leaks and a whole lot less room. It would most likely sit under the sub box.
I am also going to add in a second compressor to speed things up.

So my questions would be-
Being aluminum, would that suffice(be safe/structurally sound) for an air tank? or should it be steel?
Would it hold 200 psi of air? I have the standard easystreet air setup with a 200 off pressure switch.
I assume that the fittings on the tanks are merely held in with thread locker-or am I wrong?
I should just be able to pop those out and switch them for the fittings needed for the air equipment...right?

I plan on putting it here. It was a very snug test fit. It did fit. (That sub is NOT moving...in any direction...ever)


(The amps are for the mids and highs. They are mounted on a JL 13dub7-awaiting an amp
3 vet visits with 2 animals= I haz no money...

I had my old tank sunk where the spare was, all hidden by a false floor.

On a separate note how should I secure that box down. As of now I am using steel from a bed frame to keep the back from falling into the spare wheel well.(Bed frame steel is pretty thick. It holds up big fat fatties for years on end so, I'm not scared.)
I was thinking about bolting something to the bed frame and then attaching it to the rear deck lid. I want this to be thief proof. I want to catch the b@$tard in the act, pull up a lawn chair, and say "hey! you uh...you need some help with that?"
I do not own a welder nor posses skilz of one so that is out of the question.


Let me know what everyone thinks. I appreciate it.

I was able to borrow wrenches and with the help of my father in-law we were able to take the hardware out of the tank. I ended up dismantling the one with 5 holes because all of the holes were threaded.

I have yet to find out if this will be a suitable tank for air. It holds 33lbs of liquid propane which is pressurized so I am thinking it shouldn't be a problem. I am hopeful.

I don't have any pics from tonight. I will update again tomorrow with what I have found out as well as pictures.

Find out what the max pressure the tank is rated at. More than likely it'll be fine holding ~150psi of air.

I'm sure theres some DOT numbers on those tanks, just look up the specs online.


1994 Saturn SL2 Home Coming Edition: backup car
2002 Chevy Cavalier LS Sport Coupe: In a Junk Yard
1995 Mazda Miata R-package Class=STR
Sponsored by: Kronos Performance

WPI Class of '12 Mechanical Engineering
WPI SAE Risk and Sustainability Management Officer

I fill those propane tanks daily at my job. The reading on the gauge coming off the pump varies between 200 and 250 psi. Those are MORE than suitable to hold air. Just be sure to use a good Teflon thread sealant went screwing in the valves and/or plugs on the tank.



2010 Subaru Impreza WRX Limited
1999 Cavalier Z24 Supercharged
1999 Grand AM SE (Beater Car)
1997 GMC Sierra
2007 Honda CBR 600RR
2005 Honda TRX450R