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Old 01-28-2012, 03:14 PM
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Aftermarket AC

I bought a kitcar a few years ago; it has a 302 Ford engine and came with an aftermarket AC which worked fine until recently because I rarely start up the car. The kitcar was put together around 1989, and I am pretty sure the AC system was installed at the time that the car was built.

I don't know if it is Freon or R13 (or whatever the newer gas is called). I happen to have a few old cannisters of freon so I could put that in, but am afraid that it might damage the compressor if it is supposed to be loaded with R13 instead.

Here are my questions to someone out there who can help me:

If it is engineered for R13 and I put in freon, will it cause damages? Conversely, if it is engineered for Freon and I put in R13, will it cause damages? Lastly, if each will hurt the other, how do I determine which gas to use?

There are no identifying manufacturer's stamps or logos or anything else to identify what company manufactured or installed any of the AC system parts. The only manufacturer's name on the entire system is "Viking, Corry PA" which is stamped on the plastic caps on the D and S valves which are part of the compressor. Wasn't 1989 around the time that the switch was made from freon to the newer gas? By the way, I would attach the gas line to the "S" valve to put in new gas, correct?

Please help me.

Thanks.

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Old 01-29-2012, 11:10 PM
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It will be an R12 system. R134 hadn't been invented in 1989...
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Old 01-30-2012, 02:00 PM
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Aftermarket AC

Thanks for your help. Am I correct that I would use the "S" port on the compressor to recharge the system vs the "D" port?

Mahalo.

Jugger
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Old 02-01-2012, 11:56 AM
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R134 came into use in 1994...If the car was built in 1989 it most likely has R-12.
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Old 02-01-2012, 12:44 PM
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Aftermarket AC

Thanks for the reply.
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Old 02-01-2012, 04:57 PM
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Quote:
Originally Posted by jugger
Thanks for your help. Am I correct that I would use the "S" port on the compressor to recharge the system vs the "D" port?

Mahalo.

Jugger
Yes, charge through the "S" port with the blue hose ( Low side) or your hose from the parts store. Do Not hook to the "D" side with the parts store hose.Good luck.
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Old 02-02-2012, 01:44 PM
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Aftermarket AC

Mahalo for your help!

Jugger
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Old 02-02-2012, 08:40 PM
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99% of after market systems used a little less than 2 pounds of R-12. Watch your sight glass and stop when the glass clears.With A/C more is not better.
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Old 02-03-2012, 11:17 PM
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aftermarket AC

Tnanks boothboy.

Jugger.
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