Brett Jenkins

I am finally getting around to adding AC to my 85. Currently, the only things that are there are the 2 hard lines that go back to the expansion valve/evaporator, the valve and evap. and the compressor bracket. I am trying to compile a list of parts and how-to's to make it happen, and I have some questions. Here's the parts list I have come up with so far.

Compressor
Condenser
Receiver/Drier
Expansion Valve
Anti Freeze Switch
Low Pressure Switch
Temp Switch
O-rings
R134a
Compressor oil.

I have the low pressure port on the hard line under the radiator hose, but what provides the high side port?

I'd like to forego replacing the evaporator if I can, hoping mine is ok. Can I simply put it all together and pull a vacuum to tell if it's airtight and ok without adding refrigerant?

Can someone measure the height of their condensor? My radiator is moved forward a few inches to make room for the SC, so I want to make sure the hood will close.
Does anyone have a comprehensive how-to for the leak teste and refill and any other suggestions/tips?

The Forgotten On

Get some good AC flush and go to town on everything still in it.

If you haven't sealed off the evaporator there will probably be bits of stuff in it (same for the lines) that can clog stuff.

It's fine to reuse all the hardlines and evaporator in place.

The high side port is attached to the receiver /drier.

Brett Jenkins

I got my old compressor installed temporarily to test fitment and make sure the belt works with my custom pulley. All looked good. I got the evaporator and hard lines flushed out this weekend and am now waiting on all the parts to arrive to finish the project. I found everything I need except 1 o-ring. It is the one that goes between the bottom of the receiver/drier and the condenser. It is part # 999.701.619.40 and it is NLA every where that I have looked. Anybody have a lead on this o-ring or now a replacement part #?

j.kenzie@sbcglobal.net

I would buy an assortment of orings, so I'm prepared. Cheap and effective. Here's an example:


Good luck,
Dave

Hey_Allen

I'm not a professional HVAC tech, though licensed for it, but I'd suggest just buying a set of AC o-rings and see which one fits. Almost guarantee you'll find one in the set that would work for your need, and the new green o-rings are rated to withstand the newer compressor oils and refrigerants.
Here's an Amazon link to a selection of kits, just as an example.

edit: took too long to actually hit send, so duplicated recommendation. Happy wrenching and best of luck with the AC install!