A6 Compressors

[Ribbedroof]

Since the R4 compressor is fanous for leaking/short lifespan, I have been considering going back to an A6 compressor. Anybody still using one?

 

[airboatgreg]

Buy a good quality R-4. Flush entire system out(All components including hoses) Add correct amount and type of oil to each component(usually 10 ounces to whole system). Use a vacuum pump that boils water and pump as long as you can. On large systems i would go overnight. Add the correct amount of R-134A and you will get years of good service. PM me if any questions.

 

[rfpowerdude]

Watching as I need to do an A-6 for my 1970 Cutlass.

And I still have a sheetload of R12.

 

[Ribbedroof]

Buy a good quality R-4. Flush entire system out(All components including hoses) Add correct amount and type of oil to each component(usually 10 ounces to whole system). Use a vacuum pump that boils water and pump as long as you can. On large systems i would go overnight. Add the correct amount of R-134A and you will get years of good service. PM me if any questions.

So what is your reasoning for using an R4?
I have all the bracketry for both systems.

Back when I was driving the previous generation of GM intermediates never really had an issue with an A6 compressor. Wish I could say the same for R4s, including some OE installations

 

[Texas82GP]

It's been my understanding that the key is don't Rev the R4 past 4500 RPM. I haven't personally experienced bad service out of an OE R4.

 

[airboatgreg]

So what is your reasoning for using an R4?
I have all the bracketry for both systems.

Back when I was driving the previous generation of GM intermediates never really had an issue with an A6 compressor. Wish I could say the same for R4s, including some OE installations

Lighter and more efficient.

 

[gnvair]

It's been my understanding that the key is don't Rev the R4 past 4500 RPM. I haven't personally experienced bad service out of an OE R4.

For that reason I installed the Oldsmobile wide open throttle compressor cut out switch on the pedal of my Malibu.
I run an oem serpentine belt drive that is a mixture of 88-92 F body and B body components. I installed a brand new AC Delco compressor. I still run R12 in mine.