Is it possible to pull the AC evaporator with the engine in the car. 350 (if that helps).

If yes, any secrets to getting it out?

Thanks in advance

 

use the advanced search option "evaporator removal" to find more

http://forums.corvetteforum.com/c3-t...r-housing.html

 

No. I just did it.

I am replacing all the ac parts and just put the evaporator back in. It is not a bad job to do but as with anything else things come apart a lot faster than they go together. Especially ac tubing that needs to be "massaged" (bent) to align with other parts. Loosely fit everything
first as you start to reinstall.

There is a screw on the inside lower left that needs to be removed to pull the housing. I removed the vacuum actuator above the housing and the spark plug wire shielding for access and the housing came out with a little effort.

(Found out the PO and the vacuum hoses to the wiper door reversed at both ends. It worked, just gave me fits wondering why the red hose could not reach where the red hose was supposed to go ) Also forgot that I took photos of everything before it came apart.

Next time I will use a thinner strip caulk when the housing goes back in place. Too thick of a sticky strip caulk makes it difficult to line up the screw holes that go in two directions.

Ask more questions. I promise not to send you looking for the AIM.

Heater core has to come out from the inside if you decide to do that. Watch out for replacement heater cores. Some new ones are only 2" thick which is a manufacturer error. Core needs to be 2 1/2" or the straps holding it in place will not work and the pipes from the core will hit the case before the core mounts in place.

Best of luck

 

WAIT.
I misread your question. The engine can stay in. I misread your question thinking your were pulling the evaporator form the inside of the car. I will change my name to DumbAss

 

I just replaced my evaporator in a 78 pace car, L-82. I found it necessary to pull the radiator overflow tank which is not hard to remove but gives you some room to get to the fittings on the drier. Some of the housing screws on the bottom are hard to get to but it can be done with a 1/4 drive ratchet. I had to raise the car on ramps.
Be sure to replace the orifice since it goes into the evap. vertical pipe (at least on mine it does). Get a seal kit.

 

Thanks. This is just the info I needed. I am also replacing the entire system.

 

Did it on my 81 last year. You do not need to pull engine. Just a bunch of patience, few cuss words etc. etc. Don't do like I did. Make sure your new evaporator is correct before installing. I installed mine and the nipples on the thing was installed wrong. I wasn't about to tear it back down and have it replaced of which the company said they would. I had to rig it up and make it work but I loose my charge after a year. But will need to go at it again some day.

 

As I mentioned, I am replacing the whole system. I have the evaporator, POA, expansion valve, compressor, and hoses in place but I am having a problem with the condensor. It did not seem to fit until I noticed that one bracket was adjustable. Now it bolts up but is not level. Not sure what the problem is.