Author Topic: Trailduster ac swap  (Read 436 times)

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Offline laxjunkie

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Trailduster ac swap
« on: May 31, 2020, 12:10:55 am »
I am trying to get my Trailduster to where I can actually stand driving it; it can get quite hot in the summer without ac. I am hoping someone here can help me figure this out as I havenít seen many answers to what Iím trying to do, and donít know what parts I would need or what kit would help me.

My 79 TD came factory with AC. I swapped in an 85 360, and still have the compressor for that motor and it is currently mounted. I also have the condenser from the 85 RC which I just put in today.  As far as I know, all in dash AC parts are there. I also have the hoses that connects to the firewall, but they donít have the right fittings for the newer style compressor.

Can anyone walk me through or link me to a page that could explain what I need to do to get my AC working? 
1979 Plymouth Trailduster: 1985 360/727/NP208. 4 inch lift, 4.56 gears, Detroit locked front and rear

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    Offline DODGEBOYS

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    Re: Trailduster ac swap
    « Reply #1 on: May 31, 2020, 09:06:19 am »
    so you wanna run a 79 truck AC off a 85 compressor / your gonna need all the 1985 fittings and all the 1979 hoses , then bring the whole mess to a guy that makes "hydraulic hoses" to crimp the 85 fittings onto the 79 hoses [ now would be a good time to buy hose by the foot ] your hydraulic guy can get that hose OR change the dash AC over to a 1985 unit
    put your truck info HERE
    MOPAR TO YA!!!!!! AARON HOWORD TOWNSEND / SLANTEDMIND---GOD BLESSDODGEBOYS FSM STORE
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    Offline Mojack

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    Re: Trailduster ac swap
    « Reply #2 on: May 31, 2020, 02:55:59 pm »
    My 79 TD a.c. has been decommissioned like yours. It's not really a necessity most of the year in my area,  but I've wondered if it was worth the trouble. I would have to go from the factory small block to big block in addition. Factory, hybrid or aftermarket. Interested in what you decide.
    1979 Trailduster 0 cubic inches, awaiting a 440, a crusty work in progress.

    Offline laxjunkie

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    Re: Trailduster ac swap
    « Reply #3 on: May 31, 2020, 03:23:16 pm »
    so you wanna run a 79 truck AC off a 85 compressor / your gonna need all the 1985 fittings and all the 1979 hoses , then bring the whole mess to a guy that makes "hydraulic hoses" to crimp the 85 fittings onto the 79 hoses [ now would be a good time to buy hose by the foot ] your hydraulic guy can get that hose OR change the dash AC over to a 1985 unit

    Yes that is my plan. I have most the stuff already in, so I figured it would be easy to just get lines made so I could use the news style compressor without having to change anything in the dash.

    Edit; by changing the dash AC over, do you mean changing out the evaporator core? Will the 85 core fit in place of the 79?

    Edit 2: or is a better plan to use the 79 compressor and keep the old system in place? Would it even mount up on an 85?
    « Last Edit: May 31, 2020, 07:20:55 pm by laxjunkie »
    1979 Plymouth Trailduster: 1985 360/727/NP208. 4 inch lift, 4.56 gears, Detroit locked front and rear

    Offline DODGEBOYS

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    Re: Trailduster ac swap
    « Reply #4 on: May 31, 2020, 07:58:34 pm »
    the 1979 stuff would be a bolt on
    put your truck info HERE
    MOPAR TO YA!!!!!! AARON HOWORD TOWNSEND / SLANTEDMIND---GOD BLESSDODGEBOYS FSM STORE
    [email protected]
    former Parts Mgr & A1 Tech @ Pete's Chrysler -Plymouth
    DO NOT use the site IM,s to contact me  l have them turned OFF

    Offline rc12102

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    Re: Trailduster ac swap
    « Reply #5 on: June 1, 2020, 11:43:31 am »
    I'm going through my 86 and getting the factory AC back working and thought I'd chime in if you're planning on paying to get the new lines made up.  Most here recommend changing the condenser to a new style parallel flow if you're going to r134 (which I would assume you are). They're pretty cheap and you're getting the lines made up already anyways so might as well do it now.

    For me, I'm planning on swapping the compressor as well and getting rid of the factory fittings.  We identified a slight leak with the r134 (which is pretty common) and I'm worried I'm going to spend all this money to have lines made up with old fittings that are the cause of the leak.  Just food for thought.

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    Offline laxjunkie

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    Re: Trailduster ac swap
    « Reply #6 on: June 1, 2020, 06:37:17 pm »
    I'm going through my 86 and getting the factory AC back working and thought I'd chime in if you're planning on paying to get the new lines made up.  Most here recommend changing the condenser to a new style parallel flow if you're going to r134 (which I would assume you are). They're pretty cheap and you're getting the lines made up already anyways so might as well do it now.

    For me, I'm planning on swapping the compressor as well and getting rid of the factory fittings.  We identified a slight leak with the r134 (which is pretty common) and I'm worried I'm going to spend all this money to have lines made up with old fittings that are the cause of the leak.  Just food for thought.

    I honestly have no idea about the r12(?) vs r134. Do I need to upgrade to the r134? I didnít think about that at all, I just want AC without spending an arm on it.
    1979 Plymouth Trailduster: 1985 360/727/NP208. 4 inch lift, 4.56 gears, Detroit locked front and rear

     

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