DAMMIT! CAN"T FIND THIS ANSWER is low pressure ac valve in same spot on 87 as on 86?

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07-31-2008 | 01:28 AM

#46

KuHL 951

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From: Nor Cal, Seal Rock, OR

Quote:

Originally Posted by ehall

are you referring th o the Griffiths condenser or the stock condenser?

The OE 944 condenser is the one some feel is too small for R-134 in hot climates. I converted my 91 BMW my son drives to R-134 years ago and it works great on the open road but absolutely sucks in stop and go city traffic. I compared the condenser size to his girlfriends 96 325 designed for R-134 and her condenser is substantially larger and thicker.

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07-31-2008 | 01:34 AM

#47

ehall

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Ahh! Okay.

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07-31-2008 | 10:33 AM

#48

CurtP

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Quote:

Originally Posted by KuHL 951

You might consider getting new barrier type hoses, the R-134 runs at a higher pressure and will find any weak spots in an old style non-barrier R-12 hose. The Sanden or Kuehl compressor from Griffiths is a very good start if you want to do it right. Some say the condenser is still a bit small for optimum R-134 efficiency when driving in city traffic where air flow is reduced.

http://www.epa.gov/ozone/title6/609/...uid.html#hoses

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07-31-2008 | 11:13 AM

#49

KuHL 951

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From: Nor Cal, Seal Rock, OR

Quote:

Originally Posted by CurtP

http://www.epa.gov/ozone/title6/609/...uid.html#hoses

Thanks, good info on the hoses. Still his hoses are probably 20 years old and if he has to open the system for a new compressor it might be worth to effort and expense to do them at the same time.

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07-31-2008 | 12:54 PM

#50

The DareDevil

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Quote:

Originally Posted by KuHL 951

Thanks, good info on the hoses. Still his hoses are probably 20 years old and if he has to open the system for a new compressor it might be worth to effort and expense to do them at the same time.

The hoses that run to the firewall are a real pain to change.

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07-31-2008 | 01:29 PM

#51

KuHL 951

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From: Nor Cal, Seal Rock, OR

Quote:

Originally Posted by The DareDevil

The hoses that run to the firewall are a real pain to change.

I can imagine, I have the engine out at the moment and am thinking of swapping hoses while I can just to be sure. A local hydraulic supplier makes them for much less than from retail sources.

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07-31-2008 | 01:33 PM

#52

Bri Bro

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I can't remember what the R134A hoses are lined with but I know it is different then the R12 hose. R134A tends to leak easier then R12 did. Also, since R134A generates more heat in the compressor, sometimes a larger condensor is the only way to get the heat out of the cycle.

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08-14-2008 | 10:09 AM

#53

ehall

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BTW. I recharged the R134A system and it works like a champ. Freaking frosty! Thanks for the assistance, Gents.

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08-14-2008 | 11:02 AM

#54

KuHL 951

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From: Nor Cal, Seal Rock, OR

Quote:

Originally Posted by ehall

BTW. I recharged the R134A system and it works like a champ. Freaking frosty! Thanks for the assistance, Gents.

That's good to hear. Not to rub it in but could you have done this before the trip or did you chage out other AC components also?

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08-14-2008 | 11:05 AM

#55

ehall

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Physically, yes, I could have.
However, due to a lack of time, facilities (especially facilities) and the ability to lift the car safely, I couldn't have relaistically gotten it done without atleast one extra day in L.A., and the purchase of a couple of jack stands, which I don't need.
It's all good now. The drive was still worth it.

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