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by bohica2xo
Thu Jul 09, 2020 6:26 am
Forum: Automotive Air Conditioning Forum
Topic: Conservative A/C Restore?
Replies: 3
Views: 46

Re: Conservative A/C Restore?

It depends on what kind of shape the VIR is in. They are rebuildable. Is this a restoration? Do you want to keep all of the OEM parts intact? If the vehicle sat with a failed compressor, but all of the lines remained connected - the VIR may be just fine. The heater core should be replaced since you ...
by bohica2xo
Tue Jul 07, 2020 8:32 pm
Forum: Automotive Air Conditioning Forum
Topic: 1961 cadillac conversion
Replies: 20
Views: 250

Re: 1961 cadillac conversion

The V7 uses the block style suction / discharge setup common to GM products. I know there are aftermarket blocks out there, as well as OEM stuff. Here are a couple of GM part numbers for V7 suction / discharge hose sets, see if you can find one locally to look at: 10229469, 19213199, 15034761, 19169...
by bohica2xo
Tue Jul 07, 2020 10:44 am
Forum: Automotive Air Conditioning Forum
Topic: 1961 cadillac conversion
Replies: 20
Views: 250

Re: 1961 cadillac conversion

GM installed V7's in Orifice tube systems. Yes, you give up a little performance with increased OCR. You could add a TXV if you want - just remove the orifice tube & plumb it in. Adding a receiver to the liquid line in the process. I would start with the O/T setup you have & go from there. I...
by bohica2xo
Sun Jul 05, 2020 3:17 pm
Forum: Automotive Air Conditioning Forum
Topic: 1961 cadillac conversion
Replies: 20
Views: 250

Re: 1961 cadillac conversion

Well, the biggest Sanden you will find is the SD7H15. It is a little bigger, but not a direct bolt up either: http://www.sanden.com.sg/opencms/opencms/sites/default/Sanden/_configuration/Catelogue/Product.jsp?pid=1005 You could use an ear mount V7 and get variable displacement in the deal as well as...
by bohica2xo
Sat Jul 04, 2020 10:12 am
Forum: Automotive Air Conditioning Forum
Topic: 1961 cadillac conversion
Replies: 20
Views: 250

Re: 1961 cadillac conversion

I guess you are using aftermarket brackets for the compressor? Afraid of OEM brackets?
by bohica2xo
Fri Jul 03, 2020 5:47 pm
Forum: Automotive Air Conditioning Forum
Topic: 1961 cadillac conversion
Replies: 20
Views: 250

Re: 1961 cadillac conversion

An Sd5H11 to cool a barge like that? 108cc's / rev compressor & 30 ounces of refrigerant sounds right for a Corolla. The OEM A5 on that car was 210cc's / rev. Charge was 80 ounces of refrigerant. My first choice for a GM compressor would be the V7 - should be mounts for that, Corvette through 20...
by bohica2xo
Sun Jun 28, 2020 1:56 pm
Forum: Automotive Air Conditioning Forum
Topic: Compressor relief valve diagnosis
Replies: 15
Views: 512

Re: Compressor relief valve diagnosis

Too clever by half.

A bypassing compressor could be diagnosed as any other system issue. A bypass valve would keep the refrigerant and oil inside the system where it should remain. With the laws regarding venting, and the flammability issues of things like yf1234 this should be obvious.

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by bohica2xo
Sun Jun 28, 2020 11:49 am
Forum: Automotive Air Conditioning Forum
Topic: Strange PSI's in AC system, no cold AC
Replies: 64
Views: 3491

Re: Strange PSI's in AC system, no cold AC

Post a picture of the plate if you can. If it is badly bent that may indicate a failure of the plate springs. Hard to say without seeing it. You can buy a whole new clutch, but a used plate will be just fine too. Yes you can drive it with the plate removed. The idler bearing is held on the case with...
by bohica2xo
Sun Jun 28, 2020 11:43 am
Forum: Automotive Air Conditioning Forum
Topic: Compressor relief valve diagnosis
Replies: 15
Views: 512

Re: Compressor relief valve diagnosis

Yep. The very nature of the HPRV leaves the spring & piston open to the elements. Low mounted compressors can have corrosion issues. Either the spring in the valve rusts away & it opens - or the whole mess corrodes & it fails to open at all. That valve should really be a bypass within th...

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