A few years ago i took all my AC components out of my '91 (except the Sanden), and set up OBA.
As you know, the air output from the Sanden is kinda hot, up till now i've run the output line on a long loop round the outside of the engine bay and back to the manifold to help it cool.
But, I've currently got the rad out (waiting replacement) and am considering putting the old AC condensor back in and running the output from the Sanden through and back to the OBA manifold.
Has anyone here done this? Did it help? Is it worth doing?
I think it's a little overkill.
If you have a copper coil for the output, which I don't even have,
it should be enough to keep o-rings and rubber seals from melting.
Adding the condenser will just increase weight and restrict flow to the radiator.
You can get a junk yard York for cheap, which runs cooler and doesn't have the oil concern (meaning don't use a Sanden just because you have one).
I made a copper coil from the compressor to the storage tank to help with the heat. Also I get my intake air from the outside of the engine compartment for even more cooling.
The storage tank is under the batteries and the copper tube is like 5 feet worth of coil, and the air intake is right below the pass headlight on the grill. And the compressor was rebuilt(by Extreme Aire) with new bearings and grease paths to also keep things smooth and as cool as it can get.
This setup runs hot, as do ALL air conditioners that are converted, even Yorks, the Freon has a oil load in it to lube and cool( the freon) the compressor. Without this oily freon we need to deal with a lot of heat. But mine runs cool enough as to not be an issue for me. I have ran it for 5 modded Jeeps worth of large tire fillings, about 40 minutes solid of run time without issues of heat(I did open the hood and rev the engine a bit).
Heat will kill your compressor if it is not delt with...
Even better run it to the tank after the AC condensor and then to your filter, pressure switch and manifold.
I did the grease thing rather than using oil.
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