Second evaporator to replace rear heater?

[Nathan Deledda]

Has anyone tried replacing the rear heater core for a second ac evaporator? The goal would be adding vents facing the middle seats from the back of the console... and possibly duct work to the front seats to add ac/ventilation to them. I have searched, and found nothing.

This might not be possible or worth doing, just looking for some thoughts.
Thanks for any input.

 

[Irish Reiver]

Would you add a second condenser and compressor or were you planning on plumbing it into the existing system?

 

[rolliges]

Some non-US market 80's have a rear A/C. I'd look to see how Toyota did it.

 

[Nathan Deledda]

I've seen the secondary/rear ac systems, but that's not quite the route I'm looking for.

I would try to keep it as simple as possible and just plumb it into the existing system with solenoid valves to isolate it when not in use. And keep the rear heater switch to controls hi/low fan settings.

I am not an AC expert, so I'm looking for any knowledgeable opinions if this would work.

 

[flintknapper]

I've seen the secondary/rear ac systems, but that's not quite the route I'm looking for.

I would try to keep it as simple as possible and just plumb it into the existing system with solenoid valves to isolate it when not in use. And keep the rear heater switch to controls hi/low fan settings.

I am not an AC expert, so I'm looking for any knowledgeable opinions if this would work.

Yes, at least one person here did it last summer (maybe two folks). Search under rear A/C you will probably find it.

You basically 'tap' into your existing system, add the evaporator and blower/vents of your choice for the rear and make your own lines to route to the rear. You will get your best results by changing out your current serpentine Condenser for a Parallel type. It was all discussed (and done).

There were several threads, here is just one:

Adding Rear A/C...Need JDM Rear A/C Condenser Info

Does anyone have or know about the dual A/C JDM model condenser? In the complete rework of my A/C (replacing evap, condenser, compressor, dryer, o-rings, etc.), I'm seriously considering adding a rear evaporator and plumbing rear lines but I need to increase the condenser capacity. I'm not...

forum.ih8mud.com

 

[flintknapper]

Would you add a second condenser and compressor or were you planning on plumbing it into the existing system?

No second compressor or condenser, but best to change out the condenser to a more efficient parallel type.

 

[Nathan Deledda]

I'll take a look! Thank you for your input!