I really doubt it could be this easy, but...

Remember when they did some tests a while back on an "air jack?" It was a big bag that was inflated by the vehicles exhaust. Worked pretty well, if I remember right. So, why not work it out to seal up on the exhaust pipe and run it to the tires?
Think about it before you flame!

Originally posted by twistedmetal
Think about it before you flame!


Think about it before you post. :rolleyes: :rolleyes: : Dumbass:

Dumbass? OK, genius, tell me why not. Have you tried it before? Never even occured to you did it?

LMAO Good comeback.

Who knows, maybe it would work. Hmm, my duals could do two tries at once LOL:D

not flaming just pondering

-is exhaust gas okay for long term use in a tire? is it any different?

-would it create too much pack pressure trying to fill a tire?
conversely - how much pressure is needed to lift the vehicle w/ a bag lift?

you can buy a spark plug replacing tire filler.
exhaust gases would be way safer then un burned air fuel mix??
I have used this on a farm truck, only trouble was burning my knuckles pulling it out

The tire bags work on about 5-15 psi. You could never get enough pressure out of the exhaust before the engine stalled to fill a tire!

BTW twistedmental is a better name for ya

Originally posted by mj
you can buy a spark plug replacing tire filler.


Goes well with Magnesium wheels :D

15 psi would air me up to street pressure;)

maybe not....

yes.. it only takes 15psi to fill the bag. but isn't the tube going in to that bag the same diameter as the rest of the tube out to the exhaust? I mean.. it doesn't neck down right?

You would have to neck it down to an air fitting. the exhaust pressure would build behind the airchuck, even a 3/8 or 1/2" open air line until the engine stalled out.

At least... thats what I think would happen.

Originally posted by reddwarf


15 psi would air me up to street pressure;)


wont work. way too much volume to move through the small valve stem. the back pressure would kill the engine. dont belive me? go cap off your exhaust pipe and weld it closed then drill a 3/16" hole in the cap. try and get the motor to run :laughing:

Well, in a perfect world, 5-15 psi is street pressure. I'm talking about getting a tire back up to trail pressure. I also can't imagine that 5-15 psi is enough to lift a vehicle, well, maybe. Also thinkin' that with dual exhaust, and no H or X pipe, that it MIGHT not kill the engine? Hell, I don't know. I've never tried it before, either. If I had, I wouldn't need to post it here. Besides, you're not really stopping the flow, just really slowing it down. Someone try this for me, my new rig isn't wired and fired, yet. :(

Have you ACTUALLY tried this, Ramstein, or are you just speculating?

I bet you a Diesel would make it work

Originally posted by twistedmetal
I also can't imagine that 5-15 psi is enough to lift a vehicle, well, maybe.

It is if the volume of the bag is great enough

Hmm, a deisel? Nope. That's much more expensive than OBA!:flipoff2:

The air jacks only need 10 psi!

http://www.afil.co.uk/airjack/defender_river.jpg

http://www.afil.co.uk/airjack/offroad.htm

OK. 10 psi is fine. Now, would it work to get a 38x14.50 SX up to the same psi? I realize the sidewalls have less give than the air jack. Also, does the air jack have a pressure release valve or something on it to keep from overinflating the bag or surpassing the 10 psi?

Originally posted by twistedmetal
Have you ACTUALLY tried this, Ramstein, or are you just speculating?

Have you ever crushed an exhaust on a rock? sure it doesnt close off the pipe completely, but the motor sure as hell wont run. Tis not that uncommon to see someone under their rig with a hacksaw choppin out the exhaust before the smashed part to get off the trail. Same principal as adapting to valve stem size. Get the spark plug adapter and pull the wire for the fuel injector on that cylinder.

Kwrangln

You'd need some sort of unloader valve, but no matter what, is it so hard to have OBA?

Originally posted by twistedmetal
Have you ACTUALLY tried this, Ramstein, or are you just speculating?

Not speculation... just a fact.

Originally posted by twistedmetal
OK. 10 psi is fine. Now, would it work to get a 38x14.50 SX up to the same psi? I realize the sidewalls have less give than the air jack. Also, does the air jack have a pressure release valve or something on it to keep from overinflating the bag or surpassing the 10 psi?


These are called "rings"

Originally posted by twistedmetal
OK. 10 psi is fine. Now, would it work to get a 38x14.50 SX up to the same psi? I realize the sidewalls have less give than the air jack. Also, does the air jack have a pressure release valve or something on it to keep from overinflating the bag or surpassing the 10 psi?

And were are you going to get more than 10 PSI?????? The engine will stall > no more supply!
Go shove a Potato up the tail pipe of your rig. Drill a 3/8 hole in the middle. Insert a air line and air chuck. Have fun! :rolleyes:

I used to have one of the spark plug type inflaters. They don't pump fuel mixture out through the hose. There is a small piston inside that divides two chambers. Nice fresh air but real slooooooooow.

Dan

I don't know about you, but exhaust gases are very harsh and when in fenderwell dumps they will eat away at the body...Carbon monoxide, all other types of stuff, you see how it destroys exhaust piping, so would you really want to pump it into your tires?

wouldnt the heat also mess up the tires or would it just be the same as the heat genrated by driving on the road?

I worked at a bike store for 2.5 years in high school. Every now and then we would see people come in who had destroyed a section of their tire by hanging the bike from a rear bike rack and not paying attention/unaware that one section of one tire was behind the exhaust. Exhaust and rubber don't mix. I think this is a terrible idea. Please don't try it on anything expensive...

you can make your own powertanks CHEAP.

Originally posted by kidwired
you can make your own powertanks CHEAP.
is there a thread on this.

I'm not saying that this is easier, better, cheaper or smarter than OBA. Just want to know if it would work! Curiosity, you know? Wouldn't it be cool if it did? $300-$500(no time to do it meself) for OBA isn't a problem. I just want to see what else works. And I'm pretty sure the wife would kill me if she caught me trying this with her Kia Optima!
Thanks for all the feedback, it's good shiat! Just remember, I gotta thing about trying new things. I can't help it.

Kinda off/on topic. Last summer there was a guy camping near us on Fordyce that filled his air mattresses off of his exhaust. :eek:

As far as heat goes, I think the exhaust gasses would have plenty of time to cool down before it got to the tire. When we used to race, we would draw a line in crayon down the exhaust tubing, where it stopped melting, we would cut it off there cuz' you start losing torque running it any longer than that. But, this wasn't on a stubby little flatfender either!