83 944

i bought the retro fit kit for my 83 944 and i dont know if i am suppose to charge it on the high side because you cant get to the low side on the compressor due to tight gap between the alternator. is there a way to change it on the low side is what im asking because i dont want to pay a shop gobs and gobs amount of money to charge my a/c.

help appreciated in a hot summer day in florida haha

Mike

John_AZ

Mike,

NO high side charge. The low side fitting is underneath the AC compressor. Get a 90 degree adapter (NAPA & others) and a 1 inch shorter belt for the Alternator and AC compressor.

Now, what condition is your system in? Is it completely empty? You should vacuum the system for 30 minutes and stop to check for leaks. Then keep on with the vacuum for another 45 minutes to an hour to get all the moisture out of the system. I do not recommend the Harbor Freight venturi $15.99 vacuum pump.

Have you seen FR Wilk/Porsche information on the conversion? (A/C 134a)
http://www.the944.com/

All this being said, if your AC is just super low on freon and you get the 90 degree adapter for the compressor and the shorter belt, some just use the conversion kit with out doing the vacuum, not changing the receiver/dryer or adding oil.
Might and might not work, just money and time.

GL
John

83 944

hmm interesting. well its completely dry ac hasnt been charge in problem 20 years since i bought my car from guy who raced it and blew the motor and i put an 86 motor in it a year ago etc. i just know between 4 motor swaps that my 944 has had it is all dry in the ac area haha. i found a 90 degree bend but its 17.99 but oh well. ill buy that tomorrow and charge it. Reason for the shorter belt? i figure once the 90 degree adapter being there i can just retention the belt and start the car turn the ac on and charge it. so im curious on why i need a shorter belt.

thanks for all the info! alot of help

Mike

John_AZ

Check around for the fitting. AutoZone, O'Reilly/Checker ...

If you change the fitting you will have to vacuum the system. It should be done for sure since the AC hasn't been used for 20 years. You'll have to check for dried seals "O" rings and such. Most likely the front seal on the compressor is shot.

Remove the Schrader valve stem from the compressor before you install the 90 degree fitting.

https://www.ackits.com/pc/35-50003/c...2890+Degree%29

Napa for the shorter belt:
NHB 25050390 at Napa.

User explanation for shorter belt:
http://forums.pelicanparts.com/porsc...sure-line.html

GL
John

944Ross

Replace the drier, too. A quick easy job and only about $25. Personally I'd remove the compressor, drain any oil out of it, and put in 3-4 oz of ester before starting to feed in the oil/R134 mix. It makes me nervous to feed the oil mix so close to the compressor. It's a shame there isn't a better location for the low side.