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06-01-2019
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#1 |
 
Join Date: Sep 2018
Location: Groton, CT
Posts: 384
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AC conversion
Since my AC system is empty of R12, I'm going to convert to R134a.
I've got a new compressor on order, but I need the rest of the required parts. Is there a list, or kit, somewhere that has everything else I'll need? Thanks, Paul
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1992 ZR1 #442, 2 tops, White, White, Haibeck 415, 3.90 gear, Coilovers 2018 Audi RS5, 2.9 V6 Twin Turbo, Auto, Black, Black 2021 Audi Q3, 2.0T, 8 spd Tiptronic, Navarro Blue metallic, Pearl Beige |
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06-01-2019
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#2 |
Join Date: Aug 2004
Location: Phoenix
Posts: 59
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Re: AC conversion
You probably don't need a compressor, unless that s a known problem or the cause of your leak...most likely culprits are Schrader valve or bad hose. Any parts store has a good conversion kit (oil and connections). Expect about a 15% loss in cooling, but it still works great in Phoenix …. for about 20 years, so.....
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06-01-2019
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#3 |
 
Join Date: Jun 2006
Location: Sparks, NV
Posts: 2,852
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Re: AC conversion
That’s a matter of much debate. Years ago we simply got the R134 oriface tube and fresh PAG oil. Evacuated, then just charged it with R134. Worked fine, never had an is issue. Today they want you to change everything. At minimum I would change out the receiver dryer simply because of age. I’m sure you will hear other opinions.
H 
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90'ZR-1 #1461 Red/Black Ported Intake, Degreed Cams, OBX Headers & Exhaust, Fidanza FW, Secondary Delete, Custom tune, C6 GS Wheels. Sold 08 C6 Z51 Crystal Red Metallic Sold Vararam Intake, Tune, Sold 05 C6 Z51 Red/Black Sold 90'ZR-1 #1723 Black/Gray Sold but not forgotten 91' Z51 L98 White Vert. My First, you always remember your first. Sold. |
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06-01-2019
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#4 |
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Join Date: Sep 2018
Location: Groton, CT
Posts: 384
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Re: AC conversion
I read some articles in some past HOB issues detailing the change.
Looks like I have some work ahead of me. Pulling the plenum anyway due to a fuel leak.
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1992 ZR1 #442, 2 tops, White, White, Haibeck 415, 3.90 gear, Coilovers 2018 Audi RS5, 2.9 V6 Twin Turbo, Auto, Black, Black 2021 Audi Q3, 2.0T, 8 spd Tiptronic, Navarro Blue metallic, Pearl Beige |
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06-02-2019
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#5 |
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Join Date: Sep 2018
Location: Groton, CT
Posts: 384
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Re: AC conversion
Did the 93-95 ZR-1 go to R134a when new?
If so, was there a different condenser? Thanks
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1992 ZR1 #442, 2 tops, White, White, Haibeck 415, 3.90 gear, Coilovers 2018 Audi RS5, 2.9 V6 Twin Turbo, Auto, Black, Black 2021 Audi Q3, 2.0T, 8 spd Tiptronic, Navarro Blue metallic, Pearl Beige |
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06-02-2019
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#6 |
Join Date: Jul 2007
Location: Bartlett, IL
Posts: 7,169
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Re: AC conversion
Yes not sure on 93 but 94-95 were R134a.. different pieces in the system and the condenser was a parallel flow not the tube and fin used with R12
Sent from my iPhone using ZR-1 Net Registry
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1990 Corvette ZR-1 #1051 Watson Headers (2" Primary) - Flowmaster Cats - Borla Catback Late Model IH - Plenum Coilovers - 4.10s Custom Interior NCM Lifetime Member #978 |
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06-02-2019
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#7 |
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Join Date: Sep 2018
Location: Groton, CT
Posts: 384
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Re: AC conversion
ok thanks. Since I need a new condenser, I'll get one for a 94-95 plus all the other stuff I need.
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1992 ZR1 #442, 2 tops, White, White, Haibeck 415, 3.90 gear, Coilovers 2018 Audi RS5, 2.9 V6 Twin Turbo, Auto, Black, Black 2021 Audi Q3, 2.0T, 8 spd Tiptronic, Navarro Blue metallic, Pearl Beige |
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06-02-2019
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#8 |
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Join Date: Jul 2007
Location: Bartlett, IL
Posts: 7,169
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Re: AC conversion
You will need everything to my knowledge as the fitting are different and I think the oil cooler may have to change to mount correctly to the new condenser
__________________
1990 Corvette ZR-1 #1051 Watson Headers (2" Primary) - Flowmaster Cats - Borla Catback Late Model IH - Plenum Coilovers - 4.10s Custom Interior NCM Lifetime Member #978 |
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06-02-2019
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#9 |
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Join Date: Sep 2018
Location: Groton, CT
Posts: 384
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Re: AC conversion
Hahaha.... if it's not one thing, it's another.... the joys of owning an old car.
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1992 ZR1 #442, 2 tops, White, White, Haibeck 415, 3.90 gear, Coilovers 2018 Audi RS5, 2.9 V6 Twin Turbo, Auto, Black, Black 2021 Audi Q3, 2.0T, 8 spd Tiptronic, Navarro Blue metallic, Pearl Beige |
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06-02-2019
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#10 |
Join Date: Nov 2007
Location: Sunshine State
Posts: 1,071
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Re: AC conversion
1994 was the first year for all US automobiles to be mandated to have R-134a
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[B]1990 #2815[/B] [COLOR="Red"][B]Red/Red[/B][/COLOR] Ported Plenum & IH (by Pete) Haibeck Chip Rebuilt FPR (by Phil) FIC Injectors Watson LT Headers 3" Stainless Works exhaust Lingenfelter Open Air Lid Bill B Built Transmission Shifter & C Beam Plates [FONT=Impact][COLOR=red]1992 [COLOR=black]#[/COLOR] 091[/COLOR][/FONT] [FONT=Impact][COLOR=#ff0000]Red/[COLOR=silver]Gray[/COLOR][/COLOR][/FONT] [B]SOLD[/B] |
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