I want real A/C on my 87 3.2 - please share your upgraded system installs & reviews

[SilberUrS6]

Originally Posted by baloo

WHere is the hi/lo pressure sensor located, just in case there already is one installed on this new-to-me car?
Also, can you direct me to more details about a "trinary pressure switch", and where it would go, and how to plumb it in?

Before taking any automotive AC advice from wwest, I suggest you CALL Charlie Griffiths and talk to him about what you want and how much it'll cost.

Adding half-brained, poorly-conceived parts to the system might cost you a great deal more than the stuff Griff might sell you.

[wwest]

Originally Posted by baloo

WHere is the hi/lo pressure sensor located, just in case there already is one installed on this new-to-me car?
Also, can you direct me to more details about a "trinary pressure switch", and where it would go, and how to plumb it in?

The hi/lo pressure sensor/switch is most often mounted right at the compressor, on the compressor discharge line/pipe, with wiring directly to the compressor clutch. I would mount the trinary switch in the same place but maybe Kuehl (GOD almighty) has a better idea.

[wwest]

Originally Posted by SilberUrS6

Before taking any automotive AC advice from wwest, I suggest you CALL Charlie Griffiths and talk to him about what you want and how much it'll cost.

Adding half-brained, poorly-conceived parts to the system might cost you a great deal more than the stuff Griff might sell you.

And here I thought that I was the only one accusing Kuehl of being "half-brained".

The trinary pressure sensor/switch is today used THROUGHOUT the industry, somewhat for the exact reasons Kuehl suggests.

[aoncurly]

Originally Posted by kuehl

The barrier hoses will typically solve the issue on your year car as far as common leaks with the 911. If you still have an old York compressor the manifolds where the hoses connect leak often. If your condensers are in good shape and your evap, well... there is nothing left to leak. So if you are just looking for 'integrity' (no leaks) and if you still have a York, I'd suggest this as a minimum:

Kuehl 507 Comp Kit,
Complete Barrier hose set, with low-high pressure switch,
New Drier,
R134a conversion kit with ester

something like this 911 Kuehl 507 Compressor kit #3B,.
This kit would be a "turn key" solution for you, other than labor, refrigerant, evac,charge,test.
For a DIY, on the ground, figure 10 hours with common tools. You'll save a few hours
on a lift for the hose R&R procedure.




However, if you are looking for improved cooling performance, again Read The Mr. Ice Project this will also give you an understanding about your current objectives.

Thanks for the advice. If this will solve my leakage problem, it seems like the way to go for me. I don't really need any improved cooling. Do you have any "dealer" installers in the San Gabriel Valley area in California? I would rather have a pro install mine if I get this.

[kuehl]

The 912/911/930 did not come from the factory with refrigerant pressure switches (aka low high switch). Porsche introduced pressure switches on the 964 in mid 89; although the watercooled group had them back in the late 70's.

The topic of the pressure switch is discussed here: Pressure Switch Baloo,

If you are shopping for switches insure you note the cut in and cut out pressures.

[kuehl]

Originally Posted by wwest

T
Kuehl (GOD almighty) has a better idea.

Wwest, all of what you trying to think about was discussed so long ago.
Just read The Mr. Ice Project

and,,,, if you can tone down the sarcasm, you look foolish on the board.

[baloo]

Originally Posted by kuehl

The topic of the pressure switch is discussed here: Pressure Switch Baloo,
If you are shopping for switches insure you note the cut in and cut out pressures.

Originally Posted by WWest

The hi/lo pressure sensor/switch is most often mounted right at the compressor, on the compressor discharge line/pipe, with wiring directly to the compressor clutch. I would mount the trinary switch in the same place but maybe Kuehl (GOD almighty) has a better idea.

Thanks to both.

[wwest]

Originally Posted by kuehl

The 912/911/930 did not come from the factory with refrigerant pressure switches (aka low high switch). Porsche introduced pressure switches on the 964 in mid 89; although the watercooled group had them back in the late 70's.

The topic of the pressure switch is discussed here: Pressure Switch Baloo,

If you are shopping for switches insure you note the cut in and cut out pressures.

If you convert(ed) to R-134a you will need the pressure switch with the proper "setpoints" for that refrigerant.

A/C Pressure Switch

[brads911sc]

LOL

I love jumping into whatever threads are going on and seeing the Same $#!@ different day with WWEST making a total idiot our of himself with his unproven theories. Quite entertaining. If he was a dog we'd put him down.

Originally Posted by SilberUrS6

Yeah, we've only been saying this for about ten threads now.

This doofus kills every damn AC thread there is by trying to shout down anyone who actually knows anything about these systems.

[brads911sc]

All we need are a couple SPAL fans, some switches and some untested theories... LOL

Originally Posted by SilberUrS6

Before taking any automotive AC advice from wwest, I suggest you CALL Charlie Griffiths and talk to him about what you want and how much it'll cost.

Adding half-brained, poorly-conceived parts to the system might cost you a great deal more than the stuff Griff might sell you.