My condenser and evaporator are original 1989 R12 components that now run R134. New is Accumulator, High & Low side fittings for R134. Custom hoses, New Variable Orifice Tube, New Sandon Compressor & a longer serpentine belt. (Continental Gatorback, Does not squeak), New Pressure Switch. The electrical connector is a single connector for +12V from the pressure switch to the Compressor Clutch. (Cut off the factory connector and crimp on a bullet connector to mate with the clutch) As long as the AC system is flushed clean prior to conversion to R134 you should be ok.

AC FITTING PORT ADAPTERS,RETROFIT R12 to ACCEPT R134 3/16"(HIGH) & 1/4"(LOW

I added the parts list and picture of the parts that came with the kit you can use as a general reference. Like I said before I ended up not using a lot of the parts that came with the kit for various reasons. The hose ends would not mate up with my condenser because I needed straight fittings and not 90 degree fitting. The Accumulator did not have enough ports so I bought a GM one from Rock Auto. I replaced the orfice tube with a variable orfice tube. The hose sizes and fitting sizes are all correct I just needed the short drop fittings at the compressor end so I did not have to mount the compressor with the ports on their side. I needed straight fittings into the Accumulator and the Condenser. I did not need high or low ports on the hoses. I really went down a rabbit hole on money spent. I am very happy with end result and only if I knew than what I know now. The kit was meant for 1991-1993 Chevy GMC Truck and not my 89 S15 Jimmy. The compressor was dead and was warranted but I sold the replacement one on ebay and purchased a genuine Sanden from Summit. If I can help someone else out, I am glad to do it.

 

This is great man! thank you for the list and all the details - you literally saved me hours of research
At any point - did you consider going for the SD709 instead of the 508?

 

I did not. Because initially I bought a kit that included a Sanded Style 508, the brackets that came with the kit were for a Sanden 508, so I just stuck with the SD508. The SD709 could be a better choice but I do not have an opinion one way or another. As long as you have brackets to mount it and there is no fitment issues with the SD709 it could be a better choice for you.

 

Hi,

Just got around to buying everything we discussed in this thread.
Can you please advise which serpentine belt do i need? do you happen to have the model number or something?

Thanks, Yarin.

 

This is the belt I purchased. I believe it is about an inch longer. Your factory belt may work but this has been working perfectly.


My AC system is still performing great. I have not had a single issue. Blows cold even on the hottest days in Mississippi.

Note: Make sure you remove the shrader valves from the R12 High and Low side fittings before installing the R134 adapters. (The adapters have their own shrader valves)