Automotive Air Conditioning Information Forum

Thanks for the Cold Hose tip - I was aware they do custom hoses, but didn't know they do custom hard lines. Called them and they are going to get beck with me on my request at making up a 2 foot "U-bend em" line with the M14x1.5 fitting on one end and standard -6 on the other. That would be the easy ...

Seems like the best solution is to use the Swagelok transition fitting to connect the larger and smaller tubes instead of TIG welding or brazing them. Although any time you combine (stainless steel?) ferrule-type fittings with aluminum tubing (electrolysis factor due to dis-similar metals), you'll ...

Sorry, MIO = Male Insert O-ring fitting

I'm helping a buddy restore the A/C in his old 2nd gen RX7, and since OEM condensers are unobtainable, we sourced a generic parallel flow unit, which has the typical -8 inlet and -6 outlet MIO connections. Ditto for the generic dryer unit that has -6 in/out MIO ports. My only problem is in plumbing ...

OK..
Thanks $300 is out of budget at the moment. I'll check for red dye first.
Any idea where to find it?
Thanks bunches..
Best..
David


I picked up a relatively inexpensive electronic leak detector at Harbor Freight a few years ago that worked well enough for me to hunt down a slow leak in an ...

Cooling systems where the bypass runs through the heater core should not be blocked with a single valve. There are 4 port / 2 way coolant valves in many newer cars that can be used to keep the hot water out of the passenger compartment. Both vacuum and electric operation units have been used by ...

The 35psi low side indicates a refrigerant Temperature around 40f So I would suspect reheating or air bypassing the evaporator with vents nearly 20 degrees warmer.

^You may be on to something here. This afternoon I took the car out for some tuning pulls on the freeway; ambient temps in the mid ...

At these conditions what is the temperature of the suction line (evap out going to compressor)?


I didn't actually measure the temperature there, but the aluminum bead lock fitting where the suction line connects to the evaporator was cold to the touch - not quite freezing cold, to the point ...

Greetings,

I recently completed the A/C restoration on my '93 Mazda RX7 project car, and finally got around to charging the new system with R134A. Bottom line is the cooling performance is rather weak - coldest it would get at the blower vents was 15*C (59*F) on a humid day with 86*F temps. Looking ...

Another update & question. I got that discharge pipe fitting welded, and it no longer leaks from there. But the system still won't maintain a vacuum for more than an hour or so - vacuum drops from 30 inHg to about 25~26 inHg in that time. A very slow leak, so I put a partial charge of refrigerant in ...