A/C -> Onboard Air - PowerStrokeNation : Ford Powerstroke Diesel Forum
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post #1 of 15 (permalink) Old 04-18-2010, 06:29 PM Thread Starter
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A/C -> Onboard Air

Is it possible to use my A/C compressor for onboard air while retaining the heater? How many CFM and PSI do the A/C units put out?

1996 F350: 4.10's Detroit Locked Front/Rear, Rampage Chip, SD/Racor E-Fuel, Adrenaline, 160cc's, Bell SS/66 Turbo, SD CAC, 315/75/16's Fierce M/Ts, 6" Lift, 6ft Traction Bars, 5" Stacks.

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post #2 of 15 (permalink) Old 04-18-2010, 06:37 PM
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Re: A/C -> Onboard Air

It is possible, I looked into this a while back for my old truck. I will take a little time to figure out the details, but a really cool mod.

Try searching on the 4X4 forums.
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post #3 of 15 (permalink) Old 04-19-2010, 10:42 PM Thread Starter
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Re: A/C -> Onboard Air

So far unable to find anything on Pirate4x4, most folks are using Vlair onboard systems.

1996 F350: 4.10's Detroit Locked Front/Rear, Rampage Chip, SD/Racor E-Fuel, Adrenaline, 160cc's, Bell SS/66 Turbo, SD CAC, 315/75/16's Fierce M/Ts, 6" Lift, 6ft Traction Bars, 5" Stacks.

2007 Harley FXSTB: Bassani Prostreet Pipes, Terry Comp tuner, V&H Air Cleaner

2008 Honda Ridgeline RTX

2010 VW Jetta 2.5

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post #4 of 15 (permalink) Old 04-20-2010, 02:23 AM
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Re: A/C -> Onboard Air

Yes it is possible to do but by the time you gather all of the materials you will need to do it and the amount of effort required the cost outweighs the gain. You would be money ahead by just installing a prebuilt system. The other issue is that if you mess up building a system the pressures that come off the high side of an a/c compressor could kill you. For example you would have a storage tank capable of hold around 150 psi. The high side is capable of producing pressures in the neighborhood of 500 psi which is in the extreme but is more than enough to burst a holding tank or line and seriously injure you or kill you. If you are dead set on doing it though, you will need a pressure limiting switch, a single pole switch, a tank of your chosing in size, and an air breather.

97 F-350 XLT CC DRW 4X4 PSD, 285/75-16 Custom bumpers, Gauges-boost/egt/trans, Swamps IDM, 3.5"dp- 4" exh., 3" Body lift, ES bushings/mounts, Built trans, billet conv, B&M pan, Hayden cooler, Adrenaline, stage 2's, IC, H2E, E-fuel
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post #5 of 15 (permalink) Old 04-20-2010, 02:28 AM
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Re: A/C -> Onboard Air

I think youd be alot cheaper just buy a viair system. I have one and i have no complaints about it.

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post #6 of 15 (permalink) Old 04-20-2010, 02:31 AM
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Re: A/C -> Onboard Air

If you do that, make sure you oil the compressor somehow....they will lock up tight without oil supply. It is part of the charge for the ac sys FYI.

I do not know the output of the pump, but it would be decent.

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post #7 of 15 (permalink) Old 04-20-2010, 02:38 AM
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Re: A/C -> Onboard Air

You have to use a compressor that uses crankcase oil like the old ones (big). The refrigerant carries the oil on modern systems. Also a safety blowoff valve is a required in my book just to be safe as well.
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post #8 of 15 (permalink) Old 04-20-2010, 07:10 AM Thread Starter
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Re: A/C -> Onboard Air

Well slap me sideways! 500psi! holy great balls batman!
Alright... transfer to a new plan... When I delete the A/C can I keep my heater and where bouts can I source that A/C delete pulley?
Or Ive seen rigs with 2 alternators, how are those regulated so they dont blow the batteries?
Anyone have experience with the welders that powered by the serpentine belt system? Their name escapes me at the moment.

1996 F350: 4.10's Detroit Locked Front/Rear, Rampage Chip, SD/Racor E-Fuel, Adrenaline, 160cc's, Bell SS/66 Turbo, SD CAC, 315/75/16's Fierce M/Ts, 6" Lift, 6ft Traction Bars, 5" Stacks.

2007 Harley FXSTB: Bassani Prostreet Pipes, Terry Comp tuner, V&H Air Cleaner

2008 Honda Ridgeline RTX

2010 VW Jetta 2.5

SEMPER FI - USMC LT.
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post #9 of 15 (permalink) Old 04-22-2010, 05:47 PM Thread Starter
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Re: A/C -> Onboard Air

Could I plumb my crankcase vent into the suction side of the compressor after a filter to oil the pump and then put a filter/separator on the pressure side?
For the tank I could probably install a 150psi shutoff switch run to the compressor, or a 150 psi blowoff valve?
When I made some air cannons we also used Air-compressor regulators to regulate the Co2 from the bottles (800psi) down to 100 psi, how could I plumb in a regulator on the pressure side to allow only 150psi and to stop over-pressurization of the holding tank?

1996 F350: 4.10's Detroit Locked Front/Rear, Rampage Chip, SD/Racor E-Fuel, Adrenaline, 160cc's, Bell SS/66 Turbo, SD CAC, 315/75/16's Fierce M/Ts, 6" Lift, 6ft Traction Bars, 5" Stacks.

2007 Harley FXSTB: Bassani Prostreet Pipes, Terry Comp tuner, V&H Air Cleaner

2008 Honda Ridgeline RTX

2010 VW Jetta 2.5

SEMPER FI - USMC LT.
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post #10 of 15 (permalink) Old 04-22-2010, 07:34 PM
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Re: A/C -> Onboard Air

Quote:
Originally Posted by moonshiner View Post
Could I plumb my crankcase vent into the suction side of the compressor after a filter to oil the pump and then put a filter/separator on the pressure side? Interesting idea, it would not be the same oil as the compressor runs. You would have to be creative in case the pump doesn't move the same amount of air as the breather, and some type of bypass when the pump is off.

For the tank I could probably install a 150psi shutoff switch run to the compressor, or a 150 psi blowoff valve?I would use both, but set your pressure switch to like 120 psi then use a blow off valve set for around 150 psi.

When I made some air cannons we also used Air-compressor regulators to regulate the Co2 from the bottles (800psi) down to 100 psi, how could I plumb in a regulator on the pressure side to allow only 150psi and to stop over-pressurization of the holding tank?
That is the function of the pressure switch, to de-energize the compressor clutch when desired pressure is reached.
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