Im thinking about retro fitting an air compressor off of a 2 and 1/2 ton truck that I can acquire for about 40 bucks. But Im really worried about parasitic loss. Would it be worth it on a 22re???

 

If the compressor drive cannot be disconnected via a clutch or similar device, similar to the air conditioner, there will be some parasitic loss since the compressor piston(s) will continue moving even if it's not compressing.

How much loss is a good question though, and would depend on the unit itself but I can't imagine it needing more than 1-2 hp when unloaded or more than 4-5 loaded.

One other thing to consider is what vehicle it's coming off of. If it's a diesel-engined truck, the compressor is likely not going to appreciate its shaft revving over 3000 rpms.

 

You could always use your A/C compressor.

 

Depending on the type of a/c compressor, oiling it may be a problem.

 

Well I dont have any factory A/C. The pump is coming off of a '52 studebaker, with a gas inline 6.

But I just thought about unplugging a fuel injector and taking out a sparkplug and running a hose off of the dead cylinder. This is assuming the injector closes when no current gets to it.

 

Just what are you trying to do??

Are you talking air conditioning ?? Belt driven

Or an engine driven air compressor?? Most often gear driven.

From your last Post you are saying Air conditioning??

 

https://www.yotatech.com/forums/f116...r-22re-152143/
York air compressor, its got its own oiling system so it not an issue.
pretty good info on there and def tried and true on many rigs of all makes.

 

Put an inline oiler on the intake side of the compressor.

 

Im trying to run air, so that I can air up my tires after a day on a trail. I can get an old belt driven compressor off of a truck, or I could kill a cylinder and use the engine. Im trying to do this as cheaply as possible.

 

Buy one of the $60 Superflow/Smittybilt compressors then, quick and easy. If you want to get real fancy with it, you can hardwire it to the truck, and tap/adapt the outlet for 1/4" NPT so that you can use standard air fittings and hoses.

Don't try running off combustion chamber pressure, you'll introduce fuel and oil laden air into your tires, and tire rubber doesn't enjoy that, nevermind the added wear and tear on your starter.

As far as the engine driven compressor, how big is this thing? Is the pulley equipped with a clutch? Otherwise you'll need to come up with a bunch more plumbing to run this cleanly.

 

there are LOTS of small air compressors available at most hardware stores. It might take a while to fill your tires back up, but chances are you can spend that time rolling up your tow straps and finding your shovel in your friends truck ect. no sense spending hours hooking up this compressor system, then having problems with it on the trail, then fixing it, then breaking a belt, then taking the time to pull it out again when you can just spend the money now and be done with it. Something I've told myself since I got my truck, do it once, do it right and you won't regret it!

 

The best way I've found is to have an air tank. Then it won't matter what the compressor is.

 

Thanks for the info and tips. end thread...

 

i have a small one you hook to the battery and while slow....it does get the job done and i can take it out when i dont need it, and no taking hp when not in use

 

Ohh no,, it doesnt work that way buddy.

Most wheelers who want a cheap but good compressor get a toyota ac compressor form a wrecking yard for next to nothing, got mine for $30. If you get one from a yota with the same engine they bolt right up. Why would anybody want to run a super old compressor with no clutch? Get a yota ac pump and a toggle switch for the clutch. No worries about parasitic loads and what not.

 

Ive filled my 36'' tires 30+ times now, from 8psi to 30psi, only problem ive ever had is a hose blew off because of no hose clamp.

Yes I have an oiler, harbor freight $12.

And my favorite rock I carry for the throttle, run it at 2,000rpms and it fills in minutes. Not hours


X2 thats a retarded idea, and unnecessary.

And electric compressors takes 7 years to fill one tire. Just FYI

 

https://www.yotatech.com/forums/f88/...r-tank-239306/

 

Depends entirely on the electric compressor. Yeah, the cigarette lighter ones take ages to fill tires but these super flow compressors have gotten rave reviews for a reason.

 

I'm currently working on a york on-board air system.
Using the stock A/C bracket for the 22re, a custom bracket, yada yada.
If I want to run a tank and make it all safe, it will cost me just as much as a 15lb C02 system.
Yes, the on-board doesn't cost anything to run/fill the tires, but a C02 has more muscle and cost just as much if not less.

 

The power tank is aboot $500 claims for a 10lb system. You can pick up a factory ac compressor for $30 at a recking yard, spend $40 at harbor frieght for a 10gallon tank, and $12 for an oiler. Their hardly comparable.

You can have onboard air for under $100, anybody who thinks this is a big expensive deal doesnt know what time it is yo think i said that right.

Lot of people doent even run a tank, like me for instance. Only beny to a tank is air tools, and the first tire will fill faster, but after that your actually working the compressor harder cause its got to fill a tank and tires, not just tires.