Warren99 Posted January 23 Share Posted January 23 This is a continuation of the a/c swap conversation we had on the dash removal thread. I just want to confirm a few more things before I start buying stuff. -The r12 system in my 89MJ is a expansion valve and receiver dryer system, rather than the orifice tube and accumulator system. By converting to r134a I'm still keeping it an expansion valve and receiver dryer system right? -I'm planning on just buying the new components from rock auto, which correct me if I'm missing anything but should just be: Evap core, Receiver/dryer(NOT accumulator), Expansion valve, generic r134a oring kit, and whatever kind of oil it is that r134a takes Then, I'm pairing the new components with my old lines, my old compressor, and my old condensor, correct? (I'm getting a new heater core too so no need to remind me) Quote Link to comment Share on other sites More sharing options...
Warren99 Posted January 23 Author Share Posted January 23 My dad brought up a good point about how I have no idea my compressor works, and way back when when we tried charging it and it randomly all escaped from somewhere we never did locate it. So it might not be a bad idea to just get a new compressor. With that being said, is getting a used one from ebay a dumb idea? https://www.ebay.com/itm/155241363784?fits=Year%3A1989|Model%3ACherokee|Make%3AJeep&hash=item24251b3948:g:iBQAAOSw~KNjZplS&amdata=enc%3AAQAHAAAAsDCdzPjb%2FZOY0%2FWlU0f5ZFzRPVoWkoqx2Wdogct86EEu%2B5cf0%2BWDGrkNlM0Ic16FgU7wU%2BHp9qVD4Bhhn7lO1xkhNKl7WIx8jiIJD40d1%2FQdVVQZjHul9cNfr5qgebexbaWOM6d0o5n7VKEybSBvDXmPWGy5ll3WIcW7vcg3kW%2BK9WJZTwny14F9q9vpANxukIgWqxHRCCJ167370RRfNG8Mn%2Bjyy1JnbsTNJrDB4kUz|tkp%3ABk9SR4qT7o28YQ Quote Link to comment Share on other sites More sharing options...
Pete M Posted January 23 Share Posted January 23 If it's in the budget, I would just get new Quote Link to comment Share on other sites More sharing options...
Warren99 Posted January 23 Author Share Posted January 23 I still make money from odd jobs and such, I'm not on a fixed income of any kind so I'm trying to save wherever I safely can Quote Link to comment Share on other sites More sharing options...
Warren99 Posted January 23 Author Share Posted January 23 After all this a/c I still need a heater core, sound deadening, and I'm looking at just getting an Azzy's Linkage now instead of later. On that note, are there any cheaper alternatives like the Azzy's Linkage that perform adequately? I'd rather not drop $90, even though I'm sure they are worth it for the build quality. Quote Link to comment Share on other sites More sharing options...
Pete M Posted January 24 Share Posted January 24 52 minutes ago, Warren99 said: After all this a/c I still need a heater core, sound deadening, and I'm looking at just getting an Azzy's Linkage now instead of later. On that note, are there any cheaper alternatives like the Azzy's Linkage that perform adequately? I'd rather not drop $90, even though I'm sure they are worth it for the build quality. don't know, but here's some affordable sound deadening: https://www.amazon.com/dp/B0BK4HVKTR/ Quote Link to comment Share on other sites More sharing options...
Warren99 Posted January 24 Author Share Posted January 24 I'll either get that or kilmat. here's a bulk purchase, which makes me think of another question. The new components I'm buying, should I be buying a r134a evapcore, compressor, receiver drier... or do I buy them brand new as r12 then do the Oring thing like I was planning on already? https://www.ebay.com/itm/184593343706?fits=Year%3A1989|Model%3ACherokee|Make%3AJeep&hash=item2afa9ee4da:g:jcEAAOSwZq9f46Qr&amdata=enc%3AAQAHAAAA8HyPxCRx22s4nqoVOu0mMcZL%2BQB0RlX86jNHopPczZ7%2BiuqcVBgURA2yu%2Frp62BvBb9TCQmoOsoB1G8UncIZk400TxpMxZ9N5mPiOAXOCLN0F6Asl%2BnTGkvu%2Fs3TAfvCNDNQ7pzBe14xIWqTlgjPiV%2Fe4Z7xu0Bg1wd7sSS43D1HZes0q3QkzpvX2yM4BSM1nZ2iGABvIZnlTmt8yt0xPHKjQKVoD2icbnQIthHoZL6ZSCRRqvw0ea8plDDsyMgL8xMbGLrEgbT%2FAwR2FzzZdPlxaajnhlsEQAsxfshdMvYFicxt9M5rT37BHNVy0ZcsDA%3D%3D|tkp%3ABFBMiJPujbxh Quote Link to comment Share on other sites More sharing options...
acfortier Posted January 24 Share Posted January 24 I thought the bulletin from Chrysler on doing the conversion was posted somewhere--I would think that would have all of the info you're looking for. Quote Link to comment Share on other sites More sharing options...
Warren99 Posted January 24 Author Share Posted January 24 I wouldn't know, if you see it lmk please Quote Link to comment Share on other sites More sharing options...
Warren99 Posted January 24 Author Share Posted January 24 I may just hope my compressor is good, and buy this with a new evap core ofc. https://jeepair.com/products/copy-of-1987-1990-wrangler-r134a-conversion-kit?variant=41322890789061 Quote Link to comment Share on other sites More sharing options...
jpnjake Posted January 24 Share Posted January 24 Quote Link to comment Share on other sites More sharing options...
AZJeff Posted January 24 Share Posted January 24 Used compressors are a crap shoot, and for that reason, I would consider them a last resort. reman compressors, in my experience, are worthless. I am 3 for 3 with failures of those. I HIGHLY recommend a new compressor if you decide you need one. Quote Link to comment Share on other sites More sharing options...
Warren99 Posted January 24 Author Share Posted January 24 I'll probably get that kit I just linked, and just get the cheapest new compressor I can find. Also that write up is very useful thank you Quote Link to comment Share on other sites More sharing options...
Warren99 Posted February 17 Author Share Posted February 17 If I get a new compressor, do I just get one for an 89 MJ/XJ or do I get an r134a one from a later model XJ? Idk if there's a difference between the compressors. Quote Link to comment Share on other sites More sharing options...
eaglescout526 Posted February 17 Share Posted February 17 Big difference. What compressor mount are you running? Also if you get one with mineral oil still in it, you can drain it and put in the right PAG oil Quote Link to comment Share on other sites More sharing options...
Warren99 Posted February 17 Author Share Posted February 17 (Hopefully this upcoming week) I'm gonna swap the full interior in, new heater core and evap core, I'll just leave the evap core capped off. Whenever I'm ready to do the a/c conversion, my plan is this: https://jeepair.com/products/copy-of-1987-1990-wrangler-r134a-conversion-kit?variant=41322890789061 Gonna get this kit, and a new compressor to play it safe. Not sure of the condition of the condensor but if I decide to replace it I'm just gonna get a junkyard one. The lines I was planning on reusing from my 89 r12 system, or the 87 r12 system, whichever appear to be in better condition. So that would make everything brand new except for the lines, and the condensor, which I will be sure to replace the orings in. 55 minutes ago, eaglescout526 said: Big difference. What compressor mount are you running? Also if you get one with mineral oil still in it, you can drain it and put in the right PAG oil I have no idea what mount I'm running or what you even mean by that. My truck still currently has the stock 89 4.0 A/C components in it. And I thought people were saying in theory if I knew for sure my r12 compressor was fine, as long as I put the right oil in it I could still use it on the r134a swap. I'm simply asking now because I've pretty much decided I'm gonna get a brand new one to be safe. If a brand new r12 compressor is cheaper than a r134a compressor, and they do the same thing, I'm getting the cheaper one. Quote Link to comment Share on other sites More sharing options...
eaglescout526 Posted February 17 Share Posted February 17 You can get away with swapping your oils and be fine for the conversion. That being said it wouldnt hurt to replace the compressor but you need a Renix era sanden compressor where the mounting flanges have the holes pointing towards the front and rear of the engine bay vs the HO ones where the compressor sits on the mounts and the bolts drop down and bolt in. Quote Link to comment Share on other sites More sharing options...
Warren99 Posted February 17 Author Share Posted February 17 Gotcha Quote Link to comment Share on other sites More sharing options...
zomeizter Posted February 17 Share Posted February 17 I did a very cheap conversion on my MJ, I bought a reman compressor from ebay without any lube, I replaced all o-rings with PAG compatible ones, thoroughly flushed the system. I then put in the required amount of PAG, R134 refrigerant charge minus 15% of the amount recommended for the original type. The system works surprisingly well and blows ice cold air out the vents, this is much improved with the (Volvo) electric cooling fan swap I performed on it. Quote Link to comment Share on other sites More sharing options...
Warren99 Posted February 17 Author Share Posted February 17 https://www.amazon.com/Universal-Conditioner-CO-4653C-Compressor/dp/B003R4QXG6/ref=sr_1_6?qid=1676651715&s=automotive&sr=1-6&ufe=app_do%3Aamzn1.fos.304cacc1-b508-45fb-a37f-a2c47c48c32f&vehicle=1989-42-347------------14&vehicleName=1989+Jeep+Cherokee Here's basically the cheapest one I could find on amazon. It looks like the right bolt pattern. Would this work with the right amount of r134a oil? Quote Link to comment Share on other sites More sharing options...
zomeizter Posted February 17 Share Posted February 17 4 minutes ago, Warren99 said: https://www.amazon.com/Universal-Conditioner-CO-4653C-Compressor/dp/B003R4QXG6/ref=sr_1_6?qid=1676651715&s=automotive&sr=1-6&ufe=app_do%3Aamzn1.fos.304cacc1-b508-45fb-a37f-a2c47c48c32f&vehicle=1989-42-347------------14&vehicleName=1989+Jeep+Cherokee Here's basically the cheapest one I could find on amazon. It looks like the right bolt pattern. Would this work with the right amount of r134a oil? That looks exactly like the one I bought except mine is a V-belt pulley setup... Quote Link to comment Share on other sites More sharing options...
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