sendo Posted January 19, 2019 Author Share Posted January 19, 2019 thanks again Quote Link to comment Share on other sites More sharing options...
sendo Posted February 15, 2019 Author Share Posted February 15, 2019 134a or r12? dont know if I should buy orginal parts like the condensor stock 170.00 for r12 or parallel for 134a 300.00 after tax and shipping. what else have to be changed hoses, evaporator? r12 is 69.00 to 100.00 bucks on ebay Quote Link to comment Share on other sites More sharing options...
Leghome Posted February 15, 2019 Share Posted February 15, 2019 I changed my 72 to 134a because the r12 is getting hard to find and expensive. I had the hoses rebuilt and new dryer and a new compressor. I also had the system flushed and a since the evaporator had set open for i do not know how long I purchased a new one. The compressor I used was called a S6, it is 40% lighter than the A6 and it pistons are Teflon coated. Rob Peters who posts quite a lot on here is having his A6 and dryer rebuilt to handle the 134a freon. There is a thread on here somewhere that he tells about doing that. Quote Link to comment Share on other sites More sharing options...
sendo Posted February 15, 2019 Author Share Posted February 15, 2019 8 hours ago, Leghome said: I changed my 72 to 134a because the r12 is getting hard to find and expensive. I had the hoses rebuilt and new dryer and a new compressor. I also had the system flushed and a since the evaporator had set open for i do not know how long I purchased a new one. The compressor I used was called a S6, it is 40% lighter than the A6 and it pistons are Teflon coated. Rob Peters who posts quite a lot on here is having his A6 and dryer rebuilt to handle the 134a freon. There is a thread on here somewhere that he tells about doing that. did you change your condenser to parallel? Quote Link to comment Share on other sites More sharing options...
Leghome Posted February 16, 2019 Share Posted February 16, 2019 I am not sure what parallel refers to so probably did not. ordered new condenser from The Parts Place and received it two days before the Eastern Meet in Somerset KY. Got the car back at 6pm the day before departure and had no problems with the AC Quote Link to comment Share on other sites More sharing options...
sendo Posted February 16, 2019 Author Share Posted February 16, 2019 https://originalair.com/70-72-chevelle-el-camino-malibu-monte-carlo-sprint-condenser-parallel-flow so what im understanding is if you switch to 134a and don't have this condenser it will not cool at low rpm, so sitting at a light or stuck in traffic it will not be cold Quote Link to comment Share on other sites More sharing options...
Leghome Posted February 16, 2019 Share Posted February 16, 2019 Mine is cool when stopped. This is the condenser I bought https://www.thepartsplaceinc.com/product/1972/1972-monte-carlo-a-c-condenser-gm-3967948-631510-ac1510/5038 Quote Link to comment Share on other sites More sharing options...
sendo Posted February 17, 2019 Author Share Posted February 17, 2019 What about the POV valve? Quote Link to comment Share on other sites More sharing options...
Rob Peters Posted February 17, 2019 Share Posted February 17, 2019 Rolando, I am in the process of restoring my original AC. "Original Air Products" sells a lot of what you need and were very helpful to me. I am switching to R134 and they told me everything that would be required to be changed. The POA valve was something that needed to be changed but the evaporator and condenser were not. If you are not concerned with it looks original then they can sell you a complete aftermarket system. rob Quote Link to comment Share on other sites More sharing options...
sendo Posted March 2, 2019 Author Share Posted March 2, 2019 anyone know the sizes of bolts I need for my a/c bracket? 454 with 1st style brackets Quote Link to comment Share on other sites More sharing options...
MC1of80 Posted March 2, 2019 Share Posted March 2, 2019 Not sure of the exact sizes but I got mine from Ground Up, aka ss396.com They have bolt kits for alot of things like that. I'm sure other vendors do also but I have been using them with no problems for many years. 1 Quote Link to comment Share on other sites More sharing options...
sendo Posted March 6, 2019 Author Share Posted March 6, 2019 https://www.ebay.com/p/Gmk4032260691s-1969-1972-Chevelle-A-c-Hose-Goodmark/1271848636 is this the right hose for my car? Quote Link to comment Share on other sites More sharing options...
Rob Peters Posted March 6, 2019 Share Posted March 6, 2019 That is listed as a Chevelle. I am not sure if it is the same as the Monte BUT Old Air Products has it for a Monte at about $40 less. Check them out on their prices.... very reasonable https://www.oldairproducts.com/products?filtercache=f1583683-1329-45b1-8c90-42cf089928e9 rob 1 Quote Link to comment Share on other sites More sharing options...
sendo Posted March 6, 2019 Author Share Posted March 6, 2019 is that close to the original ? Quote Link to comment Share on other sites More sharing options...
Rob Peters Posted March 7, 2019 Share Posted March 7, 2019 2 hours ago, sendo said: is that close to the original ? Rosendo, Yes, what Old Air Products is selling is very close to original. I recently received that same line along with an expansion valve, drier, POA valve and line from the expansion valve to the drier. They also have rebuilt my compressor and I recently received it back from them. I have not reassembled everything yet and more than likely it will be almost 2 months before I get a chance to because I have surgery scheduled on my left hand next Tuesday. Even the Drier I bought from them is a duplicate of my original drier. Old Air Products are very good to work with over the phone and were very helpful in telling me how to flush my condenser and evaporator coils. The POA valve I ordered from them is not an exact duplicate of the original because I am converting to R134. Their products are warranted for one year. Let me know if you have any other questions, I will do my best to answer. rob 1 Quote Link to comment Share on other sites More sharing options...
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