944Ross

If you mean the hoses have "SAE Jxxx" printed on them, it doesn't mean they aren't metric. That is just the construction spec and pressure rating for the hose.

What is the Ford P/N? I'd bet it's for a '94 - '95 Mustang GT.

Mike C.

V2, I did some digging and I apologize for some mis-information. The fittings are not metric. From some postings I made on autoacforum.com web forum:

"I looked at my 'metric' hose connections with a thread pitch gauge and whadayaknow, 14, 16 and 18 tpi fits perfectly on the various fittings. A trip to HD verified that flare joints do indeed have the same diameters and pitch. So my German car with Japanese AC components has fittings with American threads... I even bought 3/8, 1/2 and 5/8 flare females (brass) just to verify that they do screw on (they do). So now the question is 'do o-ring fittings use the same threads/diams'? If so I would at least have the option of re-creating all of the lines (including hard line) with American fittings."
and

"A thread gauge did indeed reveal that these threads were not metric at all. Standard 9/16-18, 3/4-16 and 7/8-14 threads... German car, Japanese AC components, US spec threads.... Unfortunately, the hard lines are not standard (they measure 0.395 and 0.590 OD) so I can't just braze or compression splice new fittings to the original lines. I wrestled the hoses and lines out of the engine compartment tonight and found hose diameter markings on the hoses, 5/16, 13/32 and 1/2 inch. I assume these must be ID sizes which are compatible with today's barrier hose."

However, the barbs on the fitting for R-12 hose are different that the type used on R-134 hose. I read that the larger, sharper barbs do not work well with R-134 hose (too much interference, breaks the inner barrier at the barbs). So I ended up using a tubing cutter the cut off the original fittings and then silver brazed on R-134 fittings. I did have to tweak the cut ends slightly to fit properly for braze but it did work. Unless you get metric Swageloks for the Porsche hard lines (not readily available here), I don't think the closest US diams will fit closely enough.

V2Rocket

well i got new lines made at the hose store today with some interesting modifications...

my new lines will be removable easily but will take a bit of silver soldering to put together. pics later

V2Rocket

ok so, i found a writeup by a 911 guy on rebuilding the nippondenso ac compressor that is the same family as the one in the 944.

in searching the rennlist for info on the compressor numbers like 10P15 kept coming up as the model of the ac compressor. however, i have looked at my compressor and the number i see is 6E171.

although that seems like a different unit, at this website (http://www.acsource.com/search.aspx?find=6e171) the 6E171 and the 10P15 units use the same shaft seal which leads me to believe it is the same compressor with different outlets etc marked as different parts. they sell a gasket kit for the 6e171 compressor so i could rebuild my compressor for $10...

can anyone else check their early ac compressors to see if theirs is a 6E171 also?

Mark944na86

The early and late cars used different compressor models -- they look quite different.

10P15E is the Denso model # for the late cars.
6E171 is the Denso model # for early cars.

V2Rocket

woooohoooo time to order a rebuild kit

Mike C.

I think I have a thread in here somewhere that mentions my (failed) rebuild. When getting it apart I mistakenly loosened the bolts on a reed valve. Even tough
I tightened them back up, one came loose after less than a minute of operation. A nut got squashed and cylinder dinged up. D'oh!

V2Rocket

well, kit should be here by friday so this should be interesting