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by bohica2xo
Sun Aug 09, 2020 12:53 pm
Forum: Automotive Air Conditioning Forum
Topic: 1961 cadillac conversion
Replies: 64
Views: 17913

Re: 1961 cadillac conversion

I have no idea what sort of core they provided. A large, folded fin plate style evaporator like this was common for cars that size:


https://www.rockauto.com/en/moreinfo.php?pk=814196&cc=1445060&jsn=917
by bohica2xo
Sat Aug 08, 2020 2:46 pm
Forum: Automotive Air Conditioning Forum
Topic: 1961 cadillac conversion
Replies: 64
Views: 17913

Re: 1961 cadillac conversion

15 psi 134a is around 15f. If your lines in & out of the evaporator are cold enough to freeze atmospheric moisture, then the core is that cold as well. If you are blowing air over an evaporator that is that cold it will be very cold on the discharge side. Well, at least until the core freezes so...
by bohica2xo
Fri Aug 07, 2020 10:34 am
Forum: Automotive Air Conditioning Forum
Topic: 1961 cadillac conversion
Replies: 64
Views: 17913

Re: 1961 cadillac conversion

Your evaporator core is cold as hell. Your vent air is not going over it.
by bohica2xo
Sun Aug 02, 2020 9:46 pm
Forum: Automotive Air Conditioning Forum
Topic: Weak Compressors, or bad orifice tube?
Replies: 24
Views: 5125

Re: Weak Compressors, or bad orifice tube?

A cold accumulator with 74f discharge air indicates some blend air entry.
by bohica2xo
Sun Aug 02, 2020 5:57 pm
Forum: Automotive Air Conditioning Forum
Topic: Weak Compressors, or bad orifice tube?
Replies: 24
Views: 5125

Re: Weak Compressors, or bad orifice tube?

Book vs underhood sticker - sticker wins. Jeep tends to change systems mid year.

Your high side is in line with a proper charge with that ambient.

A restricted OT could certainly cause problems, but this could be re-heating as well. Is the accumulator cold?
by bohica2xo
Sun Aug 02, 2020 6:10 am
Forum: Automotive Air Conditioning Forum
Topic: Weak Compressors, or bad orifice tube?
Replies: 24
Views: 5125

Re: Weak Compressors, or bad orifice tube?

The system capacity for that GW is 26 ounces of refrigerant, and 7.5 ounces of PAG 100 oil. You are undercharged on refrigerant, and at an unknown oil charge level. When you replace a compressor, drain the NEW one. It is unlikely that there was a full 7.5 ounces in the replacement compressor. Testin...
by bohica2xo
Tue Jul 28, 2020 8:44 pm
Forum: Automotive Air Conditioning Forum
Topic: Want my 1956 Imperial to be a freezer in the summer
Replies: 6
Views: 1454

Re: Want my 1956 Imperial to be a freezer in the summer

Hopefully you still have a Bridgeport within reach. There are plenty of compressors out there to choose from. Pay attention to the drive ratio for the diesel. The average compressor can spin to 6,000 rpm, some are ok at 7500 on the rev limiter. Under driving the compressor from an engine that spends...
by bohica2xo
Tue Jul 28, 2020 3:18 pm
Forum: Automotive Air Conditioning Forum
Topic: 1993 Honda Accord weak AC after total rebuild
Replies: 12
Views: 2571

Re: 1993 Honda Accord weak AC after total rebuild

Lavarider: Those pressures at 1500 look very good for that system. 30psi on the R12 system is about perfect, 35f suction. The TXV is fine. You probably have a reheating issue, or air is bypassing the evaporator core. Sometimes when you replace an evaporator core, a foam seal has disintegrated to the...
by bohica2xo
Mon Jul 27, 2020 10:05 pm
Forum: Automotive Air Conditioning Forum
Topic: Want my 1956 Imperial to be a freezer in the summer
Replies: 6
Views: 1454

Re: Want my 1956 Imperial to be a freezer in the summer

Compressor capacity on automotive compressors is generally someplace below 4 tons. A Sanden 7H15 is able to make 2.13 tons at maximum capacity. The GM V7 compressor makes it to 3.98 tons capacity maximum. Running two compressors with separate systems will work. The larger TM31 compressors used on am...
by bohica2xo
Thu Jul 23, 2020 4:32 pm
Forum: Automotive Air Conditioning Forum
Topic: 2005 Mustang does not charge
Replies: 10
Views: 2720

Re: 2005 Mustang does not charge

Side can taps fix all of that...

Glad you got it fixed

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