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Old 12-26-2019, 01:09 AM   #1
tj1970cst
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I don't like expansion valves

So, I took out my 1970 evaporator and put in a 1987.

Just incase anyone else is thinking about it. Also have a sanden compressor and 14x27 Ebay condensor to put in.

Already spent some time spiffing up controls and making all the flaps work.

More to come as I get more done.
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Old 12-26-2019, 02:23 AM   #2
chev-obsession
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Re: I don't like expansion valves

I will be doing the same thing when I get to that point in my ls swap. Is there an office in the new evaporator?
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Old 12-26-2019, 09:19 AM   #3
tj1970cst
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Re: I don't like expansion valves

If you notice the crimp marks on the smaller tube of the evaporator, that's where the orifice goes.

I also bought an accumulator and a cycling switch for an 87.
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Old 12-26-2019, 09:33 AM   #4
Jcfcamaro
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Re: I don't like expansion valves

Is this stuff cheaper $$ for the 87?
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Old 12-26-2019, 09:44 AM   #5
Sheepdip
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Re: I don't like expansion valves

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Originally Posted by Jcfcamaro View Post
Is this stuff cheaper $$ for the 87?
I'm wondering myself.... why not just buy/get the 87 stuff? Clue us/me in on why?
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Old 12-26-2019, 05:27 PM   #6
tj1970cst
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Re: I don't like expansion valves

So it is a cheaper alternative to this kit.

Old air 50-7228. - 420
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Old 12-28-2019, 10:46 AM   #7
Andy4639
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Thumbs up Re: I don't like expansion valves

Did this about 25 years ago on my 71. I put the orifice in the line right at the battery tray at the union so it's easy to get to for changing. The system works great. I originally used normal R-12 parts because at the time no kits where available.
Later I bought the Classic Air group kits to get better performance out of the AC.
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1971 LWB Custom, 6.0LS & 4L80E, Speedhut.com GPS speedometer & gauges with A/C. 20" Boss 338's Grey wheels 4 wheel disc brakes. My Driver
Seeing the USA in a 71


Upstate SC GM Truck Club
2013,14 and 2016 Hot Rod Pour Tour


http://upstategmtrucks.com/



Get out and drive the truck this summer and have some fun!
It sucks not being able to hear!

LWB trucks rule, if you don't think so measure your SWB!
After talking to tech support at Air Lift I have found out that the kit I need is 60811. Per the measurements I gave them. Ride height of truck inside spring and inside diameter of springs.
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Old 12-26-2019, 05:22 PM   #8
tj1970cst
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Re: I don't like expansion valves

1987 R10 parts-
Evap- 48.89
Accumulator- 17.82
Pressure switch- 8.83

Ebay generic-
Allan GroveA/C comp bracket- 98.50
Sanden scv508- 195.00
Universal 14x27 parallel cond- 49.99

Total. - 419.03

I have some partial hose kits lying around. So I will have a new r134a system with a fixed orifice and a cycling compressor.

Last edited by tj1970cst; 12-26-2019 at 05:30 PM.
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Old 12-28-2019, 12:03 PM   #9
tj1970cst
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Re: I don't like expansion valves

Cool
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Old 12-28-2019, 02:41 PM   #10
Andy4639
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Talking Re: I don't like expansion valves

Quote:
Originally Posted by tj1970cst View Post
Cool
Thanks,
yes it is very cool!

No matter if it's 95* outside my truck runs at 38* inside.

I sent them pictures of the truck after installing their kit and was sent a request to put my truck on their cataloge. As you can see I said yes!
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1971 LWB Custom, 6.0LS & 4L80E, Speedhut.com GPS speedometer & gauges with A/C. 20" Boss 338's Grey wheels 4 wheel disc brakes. My Driver
Seeing the USA in a 71


Upstate SC GM Truck Club
2013,14 and 2016 Hot Rod Pour Tour


http://upstategmtrucks.com/



Get out and drive the truck this summer and have some fun!
It sucks not being able to hear!

LWB trucks rule, if you don't think so measure your SWB!
After talking to tech support at Air Lift I have found out that the kit I need is 60811. Per the measurements I gave them. Ride height of truck inside spring and inside diameter of springs.
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