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AC / HIGH side ???

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Old Aug 12, 2007 | 07:11 PM
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From: Lake Arrowhead - Georgia > 72 Base Coupe & 74 BB Roadster
Default AC / HIGH side ???

On a 72 350 base coupe AC compressor.....which is the high side.....low side???

Thanks.......
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Old Aug 12, 2007 | 08:05 PM
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From: Lake Arrowhead - Georgia > 72 Base Coupe & 74 BB Roadster
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We got it.......charged it to almost 200 on the high side....pushing 30 low side. Now if it just doesn't leak down. I guess I'll know in a week or so. It's been so stinking hot here....been hitting 95+ everyday for 2 weeks now. It held 30# of vacuum for about 2 hours prior to putting in the R12.

COLD baby!


Last edited by fotyfobravo; Aug 12, 2007 at 08:10 PM.
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Old Aug 12, 2007 | 09:56 PM
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Originally Posted by fotyfobravo
We got it.......charged it to almost 200 on the high side....pushing 30 low side. Now if it just doesn't leak down. I guess I'll know in a week or so. It's been so stinking hot here....been hitting 95+ everyday for 2 weeks now. It held 30# of vacuum for about 2 hours prior to putting in the R12.
You should be good to go. All these cars leak some over time. My '73 is unbelieveable cold. The last time I had to add some freon was probably 5 or more years ago to it. If you held vacuum for 2 hrs long I wouldn't worry about a thing.
I guess you found the high and low side ok. It a pain in the neck trying to connect to the low side under the passenger fender I guess you would agree. Tight fit isn't it?
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Old Aug 12, 2007 | 10:17 PM
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From: Lake Arrowhead - Georgia > 72 Base Coupe & 74 BB Roadster
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Originally Posted by ffas23
You should be good to go. All these cars leak some over time. My '73 is unbelieveable cold. The last time I had to add some freon was probably 5 or more years ago to it. If you held vacuum for 2 hrs long I wouldn't worry about a thing.
I guess you found the high and low side ok. It a pain in the neck trying to connect to the low side under the passenger fender I guess you would agree. Tight fit isn't it?

Low side! ....under the fender ?....Uh Oh!

I connected to both right on the back of the compressor!
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Old Aug 12, 2007 | 10:27 PM
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Originally Posted by fotyfobravo
Low side! ....under the fender ?....Uh Oh!

I connected to both right on the back of the compressor!
I have always connected to the low side fitting under the fender but you should still be good to go since Corvettes do have 2 fittings behind the old A-6 Compressors if I remember correctly. I guess they do since your car is plenty cold now.
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