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"Way Down the Road" Air in 74' G10
#770958 February 08th 2021 11:16 pm
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Sir Sara Lee Big Cheesecake Long Hair Master
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Hey guys ; " Way Down the Road " I'd like to ad air to my 74' G10. The dash is primo and I hate to buy a new dash for the venting.

Have you ever done or heard of getting vents out of a 71'-75- and doing a clean install on a similar dash that didn't have air ?

Re: "Way Down the Road" Air in 74' G10
SDMickey #770980 February 09th 2021 10:33 am
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carpal tunnel
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I've seen rear air units retro'd and installed behind (or between) the seats. No dash cutting required.


I've never seen a thin person drinking diet coke......
Re: "Way Down the Road" Air in 74' G10
SDMickey #770987 February 09th 2021 1:59 pm
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Looking back through your "Reader's Rides" thread, man your dash is near mint. I personally would not want to cut into a dash that nice seeing as how hard they are to come by in that condition. I believe this is what the early 3rd gen G van dash looks like with air. Problem is, I don't think even if you cut a perfect square hole for that vent with its trim, it would fit into your dash right without a LOT of work. I'll keep my eyes open this spring in the junkyard hunts I have planned. If you haven't found something by then anyway. But my 2 cents would be looking for a whole dash with the vents already there to swap in.

Attached Files s-l300.jpg
Last edited by kursed; February 09th 2021 1:59 pm.

[Linked Image from live.staticflickr.com]

Re: "Way Down the Road" Air in 74' G10
SDMickey #770989 February 09th 2021 2:04 pm
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Rust N Dents
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I like Catfish's idea.


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Re: "Way Down the Road" Air in 74' G10
SDMickey #771083 February 10th 2021 5:36 pm
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Sir Sara Lee Big Cheesecake Long Hair Master
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That rear air system sounds cool. I like that. Please keep your eyes peeled. How does that system actually work ? How are the lines ran ? Thanks

Re: "Way Down the Road" Air in 74' G10
SDMickey #771086 February 10th 2021 6:25 pm
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You could use a junk yard system but it would need to be a late model (R134) system. A 134 compressor would likely need to be retro-fitted to use the 70's v-belt drive and mounts.
A older R12 rear air system could be flushed for R134 use but you will need to convert it from a TXV controlled evap coil to a orifice system for proper oil return. And you'll need to use a suction accumulator.
Either way you need new hoses as they are specially lined to prevent leakage of R134. R134 molecules are tiny compared to R12 and can seep thru unlined hoses.
Hod Rodders have been using systems like these for years. Might search Vintage Air and others for their "hidden" systems. Not cheap but it still beats cutting a vintage dash up.
Just dig up one of those mayonnaise jars full of money you got buried in the back yard.


I've never seen a thin person drinking diet coke......
Re: "Way Down the Road" Air in 74' G10
SDMickey #771096 February 10th 2021 7:23 pm
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That's not a factory vent in 5hat picture. That's an old aftermarket vent.

Re: "Way Down the Road" Air in 74' G10
Lionhead #771111 February 10th 2021 9:32 pm
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Originally Posted by Lionhead
That's not a factory vent in 5hat picture. That's an old aftermarket vent.

Do you have a pic of what the originals would look like for him? I grabbed that one off Google, no idea what the early ones looked like, I know what the 90s+ look like, but that's it.


[Linked Image from live.staticflickr.com]

Re: "Way Down the Road" Air in 74' G10
SDMickey #771114 February 10th 2021 9:40 pm
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Sir Sara Lee Big Cheesecake Long Hair Master
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Hey Catfish; they were coffee cans and the wife found them all.

Re: "Way Down the Road" Air in 74' G10
SDMickey #771117 February 10th 2021 10:05 pm
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Yet another reason I'm glad I don't live in CA, here in VA I can just pop the vent windows around and crank open the crotch cooler vents in the kick panels and I'm all set.

[Linked Image from media.giphy.com]


[Linked Image from live.staticflickr.com]

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