xavier296 Posted January 9, 2021 Share Posted January 9, 2021 (edited) I thought I would chronicle the installation of modern under-hood components in my 74 Tii. I have had the car about a two weeks now, and it came with all Behr original components installed but not working. I have converted every other classic car I have had with modern compressor, evaporator, and R134, so I have a decent amount of experience. I bought the following from coldhose, which is about 2 hrs from my house: Sanden SD7H15 compressor ($235) York to Sanden compressor adapter ($40) Hose and dryer kit, including switch ($100) 10X18 condenser and brackets($62) #6 and #10 flare to o-ring adapters The Sanden fits perfectly with the adapter. I need slightly longer bolts for my final installation, but the adapter just bolts to the original compressor bracket. To get the compressor aligned with the tii pulley, I needed to run the bolt through the adapter plate, then add a nut, then put the compressor through. This pushed it back 1/4". After temporarily unbolting the horn, the condenser goes in to the hole, and fit perfectly between the uprights. I made two simple brackets utilizing the holes for the horn on each side to hold the condenser. It is very solid when attached. Cold hose sells some cheap pusher fans, but I have always had the best luck with spal, so I bought a 10" pusher fan. Made a simple sheet metal bracket for the bottom holes. That is it for today. I need to change the front main seal before I install the compressor for the final time and figure out belt length. More tomorrow. Edited January 9, 2021 by xavier296 Change picture format 5 Quote Link to comment Share on other sites More sharing options...
visionaut Posted January 9, 2021 Share Posted January 9, 2021 You should really convert your iPhone HEIC image files to JPEGS or PNGs so they will appear here. The FAQ doesn’t support HEIC format images, so use the ‘more compatible’ Sharing setting... 2 Quote Link to comment Share on other sites More sharing options...
bavariaboy Posted January 9, 2021 Share Posted January 9, 2021 Xavier, my 76 has the same conversion. If yours blows as cold as mine, and I expect it will, it will handle those sub-tropical heat waves of yours with ease. Keep us posted. Quote Link to comment Share on other sites More sharing options...
xavier296 Posted January 9, 2021 Author Share Posted January 9, 2021 Thanks Vision, I hadn't researched yet why they didn't show. I'll update the post. BB - I am mainly doing this because I couldn't find everything I wanted to know from searching. I am looking forward to some cold air! Quote Link to comment Share on other sites More sharing options...
xavier296 Posted January 9, 2021 Author Share Posted January 9, 2021 Finished more today. Belt and original tensioner are installed. Condenser and fan combo are installed. Dryer is installed. I had two screw holes in my core support for the dryer, and the cold hose dryer bracket lined up perfectly with the existing holes. I have started mocking up hoses, so I'll pull out the crimper and get them done today. 2 Quote Link to comment Share on other sites More sharing options...
fjord-tii Posted January 12, 2021 Share Posted January 12, 2021 Nice installation. I’m about where you left off, sans compressor. Some have said the Chinese clones are just fine vs. a real Sanden. Your thoughts? Also, you might paint your hinges black before installing the grills, BMW thought that was a good idea to hide behind the grill, lol. Quote Link to comment Share on other sites More sharing options...
chargin Posted January 14, 2021 Share Posted January 14, 2021 Please include the Condenser source 👍 Quote Link to comment Share on other sites More sharing options...
xavier296 Posted January 14, 2021 Author Share Posted January 14, 2021 Chargin: the condenser came from coldhose.com in Ocala, FL. 1 Quote Link to comment Share on other sites More sharing options...
xavier296 Posted January 26, 2021 Author Share Posted January 26, 2021 Well, she is fighting me. I was able to remove the old "made in west Germany" expansion valve, despite the tightened to oblivion connections. R134a expansion valve installed, then whole unit reinstalled. The worst part was cleaning the gross squirrel cages. So much dust... Determined the motor was wired backwards when I removed it, so it was blowing, but not very well. Switching the wires added a lot of air movement. After getting everything installed and hoses made, she won't hold a vacuum. I found one leak in a hose from an improper crimp, and I think I found the other at the new expansion valve connections. I guess I didn't tighten them enough. Oh well, I'll keep at it. 2 Quote Link to comment Share on other sites More sharing options...
xavier296 Posted January 28, 2021 Author Share Posted January 28, 2021 Tightened the flare fittings on the expansion valve with what seems like a lot of force, and now the system holds a vacuum! Now just waiting for a water pump to get her charged and tested. Quote Link to comment Share on other sites More sharing options...
bmw_e30 Posted January 29, 2021 Share Posted January 29, 2021 i see the light at the end of this tunnel Quote Link to comment Share on other sites More sharing options...
xavier296 Posted April 1, 2021 Author Share Posted April 1, 2021 After a million delays not related to the AC, I have finally been driving Henrik to work here in Tampa for the last few days. The AC blows very cold, with sub freezing temps possible (Thermometer showed 29 degrees). My drive is all city, and only about 5 miles each way, but I am sure that you would have to turn it down if cruising down the highway for any amount of time. Not a huge amount of air flow, but I knew that going in. Sat in traffic going home yesterday (First time I have seen traffic on the base since COVID started), and didn't seem to mind the 25 minutes of idling with the AC going in 87 degree heat. 2 Quote Link to comment Share on other sites More sharing options...
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