Engine out - upgrade A/C
Thread Starter
Racer
Joined: Oct 2006
Posts: 269
Likes: 7
Engine out - upgrade A/C
My engine is now out and I will be installing my new 406 and the new front suspension very soon.
What I want to know is what should I check in the engine bay that is related to heating and A/C before the engine is reinstalled. I will have a new compressor but intend to use all the rest of the stock heating an A/C components.
What should I replace / renew in the engine bay while the engine is out?
Thanks
What I want to know is what should I check in the engine bay that is related to heating and A/C before the engine is reinstalled. I will have a new compressor but intend to use all the rest of the stock heating an A/C components.
What should I replace / renew in the engine bay while the engine is out?
Thanks
Drifting
Joined: Aug 2005
Posts: 1,443
Likes: 65
From: Wauconda IL
What year C3 do you have?
Are you going to run R-12 or converting to R-134a?
While the motor is out, I would make sure your heater core, blower motor and evaporator are sound and clean, seal up any old seals that may let heat in and replace all the hoses just on principal.
Elm
Are you going to run R-12 or converting to R-134a?
While the motor is out, I would make sure your heater core, blower motor and evaporator are sound and clean, seal up any old seals that may let heat in and replace all the hoses just on principal.
Elm
Thread Starter
Racer
Joined: Oct 2006
Posts: 269
Likes: 7
Thanks
Drifting
Joined: Aug 2005
Posts: 1,443
Likes: 65
From: Wauconda IL
Elm
Burning Brakes
Joined: Sep 2006
Posts: 1,071
Likes: 86
From: Rotonda FL
Early 77's were equipped with a VIR (valve in receiver) system as were earlier vettes. Later 77's were equipped with a more modern style orifice system. If you have a later system and are converting to 134a, most people advise converting to a smaller orifice tube for improved performance. A search will get you the details. If you have the VIR system and are converting to 134a, a change to an aftermarket VIR eliminator kit is usual. I understand that the expansion valve in the receiver (the large can that looks like an accumulator) are not especially compatible with either 134a ot the lubricant required by 134a.
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Thread Starter
Racer
Joined: Oct 2006
Posts: 269
Likes: 7
How does Classic Air handle these issues? Is there a modern system that does not require extensive fabrication?
Drifting
Joined: Jun 2010
Posts: 1,781
Likes: 15
From: Oxford Ohio
It really opens up the engine bay but there is some work to get it right. Not big work just messing with it. The original controls function. The air box cover plate had a couple bolt holes off just a little bit.
Thread Starter
Racer
Joined: Oct 2006
Posts: 269
Likes: 7
Any pictures? Do they have installation instructions for a 77?
Thread Starter
Racer
Joined: Oct 2006
Posts: 269
Likes: 7
Is the install for a 77?
I have not seen any installation instructions that show how to connect to the 77 controller and I believe that there are differences in the ducting.
All the vendors I have seen only go up to the 76. Any help with a 77 install would be appreciated.
Thanks
I have not seen any installation instructions that show how to connect to the 77 controller and I believe that there are differences in the ducting.
All the vendors I have seen only go up to the 76. Any help with a 77 install would be appreciated.
Thanks