Restoring 1970 2800CS. All apart and going through all parts.
Going to upgrade AC system with new parallel flow condenser and new real Sanden 508, new hoses, dryer, etc.
But we are pretty much stuck with using the factory evaporator unit. Since we are pretty sure we are switching to R134a, can we still use the factory style expansion valve? In other words are they Freon specific? Are expansion valves in general Freon specific? Still might go with R12, but no around here will charge the system if we stay with R12. We can do our own charging with 134a.
From what we have researched on this forum, it appears that the OEM valves are being used with R134a swaps and no one had reported any issues with doing so that we found.
We have 2 new OEM style URO valves purchased years ago. Any concern using a URO part here as we all know what a pain to replace the valve, them so any comment on that?
We having been watching the thread where one is trying to fit a more modern evaporator core into the stock housing. Would love to go down that path, but waiting of some concrete advantages for all the effort.
Also, even thought we are updating there are still going to be many flare fitting connections. Are the use of the conical washer seals recommended in all those connections? I have read to anneal all the flare copper fittings before using again. We have a supply of new conical copper washers and the old ones which supposedly can reuse after annealing them.
Thanks
jjs2800cs
Going to upgrade AC system with new parallel flow condenser and new real Sanden 508, new hoses, dryer, etc.
But we are pretty much stuck with using the factory evaporator unit. Since we are pretty sure we are switching to R134a, can we still use the factory style expansion valve? In other words are they Freon specific? Are expansion valves in general Freon specific? Still might go with R12, but no around here will charge the system if we stay with R12. We can do our own charging with 134a.
From what we have researched on this forum, it appears that the OEM valves are being used with R134a swaps and no one had reported any issues with doing so that we found.
We have 2 new OEM style URO valves purchased years ago. Any concern using a URO part here as we all know what a pain to replace the valve, them so any comment on that?
We having been watching the thread where one is trying to fit a more modern evaporator core into the stock housing. Would love to go down that path, but waiting of some concrete advantages for all the effort.
Also, even thought we are updating there are still going to be many flare fitting connections. Are the use of the conical washer seals recommended in all those connections? I have read to anneal all the flare copper fittings before using again. We have a supply of new conical copper washers and the old ones which supposedly can reuse after annealing them.
Thanks
jjs2800cs