1980 GM truck factory A/C R134a upgrade

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Clifs80truck
Posts: 2
Joined: Sun Nov 11, 2018 2:29 pm

1980 GM truck factory A/C R134a upgrade

Postby Clifs80truck » Sun Nov 11, 2018 2:44 pm

Hi.
New to this forum, but it was highly recommended... hope you can help.
I'm restoring a 1980 chev SB 4x4 p/u to original condition, to use as a daily driver, and have come to the A/C part of it.
It came from factory w/ A/C, so I have the original components, less the compressor.
I do have a new GM R134a compressor (p/n 88964863), but do need all the rest of the components (hoses, accumulator, evaporator, etc), as mine are R-12 & 38 years old .
I would really like the evaporator core to be close to identical to the original, so it fits properly in the firewall housing.
Please help.
Thanks!
Clif
[email protected]
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Cusser
Posts: 396
Joined: Sun Apr 24, 2016 6:29 am

Re: 1980 GM truck factory A/C R134a upgrade

Postby Cusser » Sun Nov 11, 2018 7:16 pm

Clifs80truck wrote:I would really like the evaporator core to be close to identical to the original, so it fits properly in the firewall housing.
Clif
[email protected]


I don't see why you think that a new evaporator would be needed.
Clifs80truck
Posts: 2
Joined: Sun Nov 11, 2018 2:29 pm

Re: 1980 GM truck factory A/C R134a upgrade

Postby Clifs80truck » Mon Nov 12, 2018 5:57 am

cross contamination from different refrigerants is why, and the fitting sizes / orifice tubes may be differant
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Cusser
Posts: 396
Joined: Sun Apr 24, 2016 6:29 am

Re: 1980 GM truck factory A/C R134a upgrade

Postby Cusser » Mon Nov 12, 2018 6:09 am

Clifs80truck wrote:cross contamination from different refrigerants is why, and the fitting sizes / orifice tubes may be differant


Agree in your case, fittings and potential refrigeration oil residue.

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