I am trying to purchase a retrofit adapter for r134a but am unsure of what size to get for the high side. Does anyone know? 3/16? 1/4 inch? 3/8? 7/16?
Thanks

 

Come on guys. I'm sure someone has bought the kit and retrofitted themselves. I have a base but I am not sure if that matters or not. I know it does for some a/c parts.

 

Aren't R12 ports all the same? I would think any standard retrofit adapter would work, but maybe I'm wrong.

jds

 

That's exactly correct.

 

I will check when I get home today. I still have the package the adapters came in for my FD on my work bench somewhere. I think both hi and low side are 3/8- will get back to you. You could also take the plastic covers for the old hi and low side with you to the auto parts store to help match up the right size.

The size of the fitting that connects to the manifold set (your gauge set for adding refrigerant and measuring pressure on hi and low side) is standard. The end of the fitting that screws onto the old fitting on the pipes on the car is not. I just did a retro fit on my second gen that took one size for the high and one size for the low. Some also require removing the Schrader valve from the old fitting so the adapter will work.
Ron A.

 

Duckyjp- looks like 3/8 inch. I have three packs of empty retrofit fittings from my FD and FC conversion. Two are 3/8, the other is the oddball 7/16 I had to get for the FC for the high side. If you are doing the retrofit yourself, go to one of the sites which lists how to do it. Not too hard, if you have a good vacuum pump.
Ron A.