Announcement

Collapse
No announcement yet.

The Detailed E30 R-134a Conversion Thread/DIY

Collapse
X
 
  • Filter
  • Time
  • Show
Clear All
new posts

    Originally posted by cory58 View Post

    Sorry - I meant Mahle/Behr, not Bosch. I think you have the right dryer for the 2-switch set up. Here are the part numbers I have.

    On box - AD240000S
    On dryer - 50986A

    Cory
    Thank you Cory! My dryer says 64101 however the box has the same PN and it looks the same. I'm going for it!
    sigpic84 325e

    Comment


      Originally posted by 808ETA View Post

      Thank you Cory! My dryer says 64101 however the box has the same PN and it looks the same. I'm going for it!
      Let us know how it goes. I bought the wrong dryer first. They both looked the same but the plug where one of the switches mounts could not be removed. I tore it up trying to get that plug out.

      Cory
      1992 325i Cabrio
      1988 320i Touring
      2000 M5
      1977 530i
      2015 328i - Euro Delivery/Performance Center Delivery
      BMWCCA
      E30CCA

      Comment


        Click image for larger version

Name:	2712092C-EF20-4888-8A79-CF4AA902666D.png
Views:	38
Size:	413.2 KB
ID:	10022026 I get asked often enough about AC that I wanted to share this. It explains rather clearly why using a manifold gauge to figure out when you've pulled a proper vac is an exercise in futility. The difference between 500-1000-1500 microns is a hairs width on the dial.
        Seat Shocks....I have passed the baton to John Christy from Ninestitch. Email John or Garrett at ninestitch1@gmail.com

        https://www.r3vlimited.com/board/sho...86#post4944786
        Alice the Time Capsule
        http://www.r3vlimited.com/board/showthread.php?t=360504
        87 Zinno Cabrio barn find 98k and still smells like a barn. Build thread http://www.r3vlimited.com/board/show...20#post3455220

        Comment


          Got everything buttoned up and system recharged!! Thank you again for everyones tips and help!
          sigpic84 325e

          Comment


            Originally posted by 808ETA View Post
            Got everything buttoned up and system recharged!! Thank you again for everyones tips and help!
            Awesome!
            Another success story helps convince others that this approach is a true & trusted solution.
            E30 320i vert
            But daily drive is Volvo V60 Polestar

            Comment


              Originally posted by 808ETA View Post
              Got everything buttoned up and system recharged!! Thank you again for everyones tips and help!
              Awesome! Were you able to use the dryer we discussed with the 2-switch set up?

              Cory
              1992 325i Cabrio
              1988 320i Touring
              2000 M5
              1977 530i
              2015 328i - Euro Delivery/Performance Center Delivery
              BMWCCA
              E30CCA

              Comment


                Originally posted by Tzantushka View Post

                Awesome!
                Another success story helps convince others that this approach is a true & trusted solution.
                For sure! This is about 20 degrees cooler than just changing the fittings and adding 134a like I did initially.
                sigpic84 325e

                Comment


                  Originally posted by cory58 View Post

                  Awesome! Were you able to use the dryer we discussed with the 2-switch set up?

                  Cory
                  Yes, It worked perfect. No need to cut or splice any wires. Thank you again Cory!
                  sigpic84 325e

                  Comment


                    Thought some of you might be interested in the compressor that i put on my m20b23. I couldn't find an oem r134a compressor in Australia for less than about $1600 aud....

                    So I used a Sanden SD5H09 gineric R134a compressor, that only cost me about $330 AUD brand new. You can get them with the V belt or the ribbed belt, obviously get the V belt one. probably even cheaper in the USA.

                    I made my own bracket as the oem compressor has a really long nose on it and the Sanden is significantly smaller than oem. In heinsight i should have made the bracket so the compressor sits slightly lower as it does make the CAS very hard to remove (i have an m20b25 CAS - megasquirt)

                    I then had to modify the hard lines - you can see where i TIG welded on a new fittings to the hard lines (after cutting off the rubber bit) - these were called "bulk head connectors" for AC lines. Then just got some hose and fittings and made new lines to suit - these from were a vintage AC shop - really quite cheap and easy to make - supplied with a crimping tool. excuse my welding - first tig project - but it doesn't leak!

                    The rest of the r134a conversion was same as specified, i did just re-use the r12 condensor. seems to work fine. New TX valve and dryer were pretty cheap and then I just put new R134a orings everywhere. got it gassed a month or two ago, and works quite good and the sanden is very quiet, hardly tell its on.

                    I have since put a bit of heat protection on that AC rubber line - but its not as close to the exhaust as it looks in the photo.

                    Apologies for the photos uploaded weird.


                    Click image for larger version  Name:	compressor.jpg Views:	0 Size:	78.6 KB ID:	10022276


                    Click image for larger version  Name:	AC 2.jpg Views:	0 Size:	67.6 KB ID:	10022277
                    Last edited by e30davie; 06-21-2021, 10:46 PM.

                    Comment


                      Originally posted by e30davie View Post
                      Thought some of you might be interested in the compressor that i put on my m20b23.
                      Nice!
                      You have the stock oil cooler I assume?
                      E30 320i vert
                      But daily drive is Volvo V60 Polestar

                      Comment


                        I don't have any oil cooler. I don't think any of the M20b23 had an engine oil cooler. Mine was originally auto, dunno if the manual one did.

                        Comment

                        Working...
                        X