Help needed - SW20 Turbo - A/C TX Expansion Valve part number

Hi Tony,
I recently changed the TX Valve in my 1996 Aus N/A.
I had the same problem as you in identifying & got the wrong one in from Amayama.
I have attached pics of my original, which shows the inlet & outlet with different port sizes.
I got a replacement from Ashdown-Ingram. They seem to have branches all over Aus.
I am fairly sure I still have the Ashdown Ingram box, as well as the wrong valve at home, if you can wait for that info.
Will check later. I presume that the Jap 1993 Turbo is on R134a.

I have been told by many if you want reliable aircon on a 25 year old vehicle; get the system de-gassed, replace ac t/x expansion valve (difficult to get to under the dash behind the glove box - most Tx valves are around $40), clean your evaporator with water and liquid soap (need to remove to get to the Tx valve), replace the drier (under passanger pop up light $30), place all aircon joiner o-rings ($30), service the ac compressor (oil and service fee $70), new gas :) happy days

Glad I read about the TX valves in the MR2s. I leave the dryer up to the air con specialist. If they are opened to the atmosphere they they absorb moisture and lose functionality. I usually just throw out the evaporator and put in a new one. They often get gummed up inside the tubing reducing their effectiveness, plus I hate the smell of the 90s stuck to it, especially if someone has smoked in the car. Not just going by part number I'm going to measure before ordering as there are are couple of different sizes in the SW20s it appears.

Thanks everyone, I got great replays here and from mr2oc. I have sent the info onto the guy I bought the incorrect part from to see if he has the correct part to exchange with. Dam postage is the killer of the situation when buying parts online.
Have a great Christmas all :)

Hi mr2y,
Mine was nothing like that dirty.
It is a very good reason why your A/C wouldn't have been working.
It looks like you have been picking up all of the road grime for a long time.
My recollection is that there should be a filter in the air-stream for when flow through is switched on.
I will have a look at BGB A/C stuff & see if I can find it.

Sounds like others have shared my experience, so a common thing to clean after many years.
Mine was filthy bad. Soapy warm water. Got told not to use chemicals cause they can smell after.
Off to super cheap tonight to see the Tx expansion valve they got in...

mr2y
The black grime is unlike I have ever seen before, it's 5mm thick in places and waxy. It smells like "crayons" is the best I can describe it. It looks like a mix of carbon and oil/diesel, but I have no idea how that much got in there. You can also see the green dye has come out of the failed TX valve, so that explains why your regass didn't work Dudeman :) Most aircon guys will tell you no amount of degreasing will clean the core and I tend to agree, I have tried to clean the same core (they are also used in the Toyota Paseo) and never got the smells out of it. I'm just going to toss it out and put a fresh one in. 

mr2y
Did your evaporator look like this?
 
http://imgur.com/tDg2mlQ
 

 
 
Oh wow. That probably had something to do with it. It wasn't just a regas (x2) it was a system overhaul and brand new compressor put in. A system overhaul would include cleaning or suggesting such a component be replaced. Steve from Macarthur Automotive Air Conditioning in Bargo, NSW, did not clean that component or suggest to me it needed replacing. 
 
Funny, Steve from Macarthur Automotive Air Conditioning in Bargo, NSW, charged me $1200~1300 for the work to be done. I guess Steve from Macarthur Automotive Air Conditioning in Bargo, NSW did not do a competent job and my aircon did not work as it should have. 
 
Steve from Macarthur Automotive Air Conditioning in Bargo, NSW, guaranteed his work he said, and he suggested I purchase a brand new air con compressor from him so my system would work like new. It only lasted a few weeks and then didn't work at all. I contacted Steve from Macarthur Automotive Air Conditioning in Bargo, NSW about this, he initially didn't want anything to do with a repair, then nominated some small part as failing as the reason for the leak. That was Steve from Macarthur Automotive Air Conditioning in Bargo, NSW, suggested that the bright green air con dye near the air con compressor was coolant. My mechanic was the one who pointed the leak out to me, and it was not coolant, it was air con dye.
 
Steve from Macarthur Automotive Air Conditioning in Bargo, NSW, reluctantly took my car back, along with the small hard to find part which I supplied. Steve from Macarthur Automotive Air Conditioning in Bargo, NSW, then regassed the air con, and it again lasted a week or two before failing again.
 
If anyone needed any more work done on a vehicles air conditioning system, I would offer the opinion that I was not satisfied with the work carried out by Steve from Macarthur Automotive Air Conditioning in Bargo, NSW, or his follow up of the problems after he carried out the work. I would not return to Steve from Macarthur Automotive Air Conditioning in Bargo, NSW for any work on any of my vehicles.