DeTomaso Mailing List: September 2000, Message #148

 "marytaphorn" <marytaphorn@email.msn.com> wrote:
> 
> As long as my car is enjoying it second money dump, er... I mean
> restoration, I felt it an appropriate moment to convert from r-12 to r-134.
> I have a few questions for those in the know.
> 
> 1) I have a rotary compressor purchased in '92 with probably less than 20
> hrs on it.  Do I need to replace it with one specifically designed for
> r-134?  The flush that I purchased recommended not to use it in the
> compressor.  If I am able to reuse the compressor, how do I remove the
> existing oil?

My understanding is it should work fine, But I don't know how to flush it.

> 
> 2) I am rerouting new AC hoses from the condenser to the compressor and
> dryer(relocated to the firewall under the voltage regulator etc.).  I am
> considering using Russell fittings to pass the lines through the inner
> fender well sheetmetal.  Are the flare's angles compatible?  I am also
> considering Air-tique AC aluminum bulkhead fittings viewable at
> http://www.air-tique.com/hose.html.  Has anyone an opinion on this type of
> o-ring coupling?

AC flares are 45, AN is 37, so it won't work. But you can get brass 45
couplers at most HW stores. The O ring connectors are much better than
flares. A less expensive way to get through the fender well is to use an
individual  male bulkhead fitting which Air-Tique has also. These are
just the normal A/C fittings with male threads and a nut that lets you
tighten it to it's hole. Not as sexy though. If you really want to get
sexy, you could go for stainless hard lines in the bay area. Vintage Air
(www.vintageair.com I think) has the stainless fittings (about $12
each). Then you just get some stainless tube, bend, and solder, braze,
or weld the ends on.

> 
> 3) While I am using a new condenser (Thanks insurance company as the truck
> cracked the original), I am not able to flush out the evaporator while it is
> in the car.  I blew compressed air into it and no oil exited the other
> fitting.  Any suggestions or am I probably alright?

There should be oil throughout the system. I think you have to flush it
out. Take off the expansion valve and rig up a temp hose (if the regular
one won't fit) and flush it out.

> 
> 4) If I need to change compressors,  anyone want a deal on good as new r-12
> rotary compressor?
> 
> Thanks
> John T
> 
> 

-- 
Sincerely,
Richard Barkley

To Ski or not to Ski, that is the question!

Richard Barkley
(310) 373-6695 (home), 813-2432 (work)
E-mail: richard.barkley@trw.com (work), rbarkley@earthlink.net (home)
Mammoth Condo 2BR+loft/3Bath - Horizons 4 #186 (760) 934-6758
Condo web address: http://home.earthlink.net/~rbarkley