C3 General General C3 Corvette Discussion not covered in Tech
Sponsored by:
Sponsored by:

AC condensor replacement

Thread Tools
 
Search this Thread
 
Old Aug 9, 2023 | 05:23 PM
  #1  
Jim71Vette's Avatar
Jim71Vette
Thread Starter
Racer
20 Year Member
Liked
Loved
Community Favorite
 
Joined: Jul 2005
Posts: 433
Likes: 14
From: GA
Default AC condensor replacement

I'm starting to convert the AC to R134a. I can't find a "plug-n-play" parallel flow condenser. I tried to find posts about conversions and condensers that might point the way to a condensor....but no luck.
Until read a post that said a Murray AC Condensor 7-3165 was a direct fit replacement and parallel flow! Hallelujah...a major problem solved!! So....last week I went to order it from O'Reilly and asked if it really was a parallel flow and told it was not. Apparently a OEM replacement. Back to square one.
My backup plan is to use a condensor kit from Vintage Air. I think this will work ok but won't look original.
So.. my question to you guys...
Is there a AC condensor that is parallel flow and direct fit for a '71 L48?

Thanks
jim

Reply
Old Aug 9, 2023 | 08:15 PM
  #2  
4-vettes's Avatar
4-vettes
Race Director
15 Year Member
Liked
Loved
Top Answer: 1
 
Joined: Nov 2006
Posts: 13,091
Likes: 7,715
From: Sunshine Coast, Queensland, Australia
2025 C3 of the Year Finalist - Modified
2024 C3 of the Year Finalist- Modified
2022 C3 of the Year Finalist - Modified
Cruise-In VIII Veteran
Default

I just put in a inexpensive aftermarket condenser. Attached the factory mounts to it. Had the local automotive air con shop crimp an end on the hose from the compressor, and ran a new line from the condenser to the low pressure switch connector block. (Which I converted to a trienary switch). All of this was about 50 bucks at the air-con shop and the aftermarket condenser was very inexpensive. Painted it black. And where it sits, no one has ever commented that it doesn't look stock. But then most don't notice the Sanden compressor!
Reply
Old Aug 10, 2023 | 01:45 PM
  #3  
Tampa Jerry's Avatar
Tampa Jerry
Le Mans Master
20 Year Member
Active Streak: 30 Days
Active Streak: 60 Days
Top Answer: 1
 
Joined: Aug 2005
Posts: 6,500
Likes: 1,934
From: Temple Terrace Florida
Default

I would try calling Classic Auto Air in Tampa. They are local for me and I have visited their shop. Pretty impressive. They may be able to build you one. Jerry
Reply
Old Aug 10, 2023 | 03:26 PM
  #4  
Jim71Vette's Avatar
Jim71Vette
Thread Starter
Racer
20 Year Member
Liked
Loved
Community Favorite
 
Joined: Jul 2005
Posts: 433
Likes: 14
From: GA
Default

4-vettes, thanks for the reply. Beginning to realize that my only option will be to use a generic condenser and redo hoses. If I go that route, will use the vintage air condenser kit because it has mounts and other stuff I probably need.




Reply
Old Aug 10, 2023 | 03:30 PM
  #5  
Jim71Vette's Avatar
Jim71Vette
Thread Starter
Racer
20 Year Member
Liked
Loved
Community Favorite
 
Joined: Jul 2005
Posts: 433
Likes: 14
From: GA
Default

Originally Posted by Tampa Jerry
I would try calling Classic Auto Air in Tampa. They are local for me and I have visited their shop. Pretty impressive. They may be able to build you one. Jerry
A thought but sounds expensive to have a custom condenser built.
Reply
Old Aug 12, 2023 | 06:11 PM
  #6  
carriljc's Avatar
carriljc
Le Mans Master
25 Year Member
Liked
Loved
Community Favorite
 
Joined: Jan 2001
Posts: 6,664
Likes: 1,360
Default

Jim71Vette
I suggest getting the biggest condenser you can squish in there. What I did to squish in the largest parallel flow generic condenser that I could --- https://www.corvetteforum.com/forums...post1599550754
Reply
Old Aug 12, 2023 | 09:29 PM
  #7  
Mark G's Avatar
Mark G
Safety Car
Photogenic
Liked
Loved
Community Favorite
 
Joined: Jul 2005
Posts: 3,682
Likes: 829
From: WI
Default

Vintage air doesn't have anything?

Pretty much any of the micro-channel condenser are going to be parallel flow ...I bought one for my OBS truck that didn't list Parallel flow, but after contacting the company they sent me a spec sheet which said it was parallel flow.
Reply
Old Aug 13, 2023 | 12:31 PM
  #8  
ctmccloskey's Avatar
ctmccloskey
Safety Car
Supporting Lifetime
20 Year Member
Active Streak: 30 Days
Active Streak: 60 Days
Liked
 
Joined: May 2001
Posts: 4,727
Likes: 1,629
From: Fairfax Virginia
Default

If you can't find one I wouldn't make a big deal out of it. I have a 1988 C4 that came with the original style R-12 air conditioning system and I converted it to R-134 myself using the original condenser. Even with the original condenser the system blows very cold air. I bought a conversion kit which had the new ends and o-rings.

You might get slightly better performance with a Cross Flow Condenser but it does work with the R-12 condenser.

I used a 2 stage Vacuum pump from Harbor Freight ($79) to pull the vacuum. I flushed the old oil out and added the new oil, o-rings and a drier, then I pulled a vacuum and let it sit for a few days to verify that the system was in fact sealed. Back when TRAK Auto went out of business I was able to score a great deal on the R-134 for about $1 a can so I have a few cases out in my garage waiting to be used. Overall it was a fairly easy and inexpensive retrofit to switch it over to the R-134.

I am sure that using the correct parts would be optimum but the original parts will work. Good luck and may your air be cool!
Reply
Corvette Stories

The Best of Corvette for Corvette Enthusiasts

story-0

Top 10 C9 Corvette MUST-HAVES to Fix These C8 Generation Flaws!

 Michael S. Palmer
story-1

10 Revolutionary 'Corvette Firsts' Most People Don't Know

 Joe Kucinski
story-2

5 Reasons to Upgrade to an LS6-Powered Corvette; 5 Reasons to Stay LT2

 Michael S. Palmer
story-3

2027 Corvette vs The World: Every C8 vs Its Closest Competitor

 Joe Kucinski
story-4

10 Most Common Corvette Problems of the Last 20 Years!

 Joe Kucinski
story-5

5 MOST and 5 LEAST Popular Corvette Model Years in History!

 Joe Kucinski
story-6

2027 Corvette Buyer's Guide: Everything You Need to Know!

 Joe Kucinski
story-7

10 Things C8 Corvette Owners Hate (But Won't Tell You)

 Joe Kucinski
story-8

10 Best Corvettes Coming to Barrett-Jackson Palm Beach 2026!

 Brett Foote
story-9

Every Corvette Grand Sport Explained! (C2, C4, C6, C7, & C8)

 Joe Kucinski
Old Aug 21, 2023 | 12:47 AM
  #9  
Jim71Vette's Avatar
Jim71Vette
Thread Starter
Racer
20 Year Member
Liked
Loved
Community Favorite
 
Joined: Jul 2005
Posts: 433
Likes: 14
From: GA
Default

Thanks to all who replied.
It looks like my best option will be to use Vintage Air's condenser kit. The fittings will be different but I was going to redo the lines anyway.
Still would like to find a "plug-n-play" parallel flow condenser.

Reply
Old Aug 21, 2023 | 10:53 AM
  #10  
Mark G's Avatar
Mark G
Safety Car
Photogenic
Liked
Loved
Community Favorite
 
Joined: Jul 2005
Posts: 3,682
Likes: 829
From: WI
Default

Besides the condenser, there are very good videos and sights (and forum posts) on the other details and 'correct' way to convert to 134a, that go well beyond o-rings/oil & condenser. I suspect you're already on top of those or looking into them. Or use the search feature here. I would consider a new R4 compressor (for 134a)/hoses/accumulator etc.

I'm thinking back to one of the early 134a conversions I had done where we kept the condenser & compressor ...and it lasted about a week! LOL.
Reply
Old Aug 21, 2023 | 12:10 PM
  #11  
carriljc's Avatar
carriljc
Le Mans Master
25 Year Member
Liked
Loved
Community Favorite
 
Joined: Jan 2001
Posts: 6,664
Likes: 1,360
Default

I would try using the original condenser.. If your condenser is in good shape I would try using it. I've converted multiple vehicles and one of the coldest is my Nissan pickup with the old original R-12 condenser.
I've done it the "right way" with changing everything but hoses--- to not changing anything but installing R-134a fittings. The one consistent thing I've done is do a really good evacuation. Every vehicle I have done has cooled down to at least 43°F.
R-134a is relatively cheap so I'd be willing to try it with the original condenser.


Originally Posted by ctmccloskey
If you can't find one I wouldn't make a big deal out of it. I have a 1988 C4 that came with the original style R-12 air conditioning system and I converted it to R-134 myself using the original condenser. Even with the original condenser the system blows very cold air. I bought a conversion kit which had the new ends and o-rings.

You might get slightly better performance with a Cross Flow Condenser but it does work with the R-12 condenser.

I used a 2 stage Vacuum pump from Harbor Freight ($79) to pull the vacuum. I flushed the old oil out and added the new oil, o-rings and a drier, then I pulled a vacuum and let it sit for a few days to verify that the system was in fact sealed. Back when TRAK Auto went out of business I was able to score a great deal on the R-134 for about $1 a can so I have a few cases out in my garage waiting to be used. Overall it was a fairly easy and inexpensive retrofit to switch it over to the R-134.

I am sure that using the correct parts would be optimum but the original parts will work. Good luck and may your air be cool!
Reply
Old Aug 21, 2023 | 05:46 PM
  #12  
0311 jarhead's Avatar
0311 jarhead
Burning Brakes
Veteran: Marine Corps
Liked
Loved
Community Favorite
 
Joined: Sep 2019
Posts: 923
Likes: 154
From: North Port, FL
Default

I got this off flea bay
CNFP1624KT Kit AC A/C Universal Condenser. Parallel Flow 16 x 24 with Drier. Company called accollisionparts.
Works and fit great on my 72 and cost $79. Had a local AC guy make up some custom hoses. I dont remember how much
but it all fit perfect.
Reply

Get notified of new replies

To AC condensor replacement





All times are GMT -4. The time now is 02:29 PM.

story-0
Top 10 C9 Corvette MUST-HAVES to Fix These C8 Generation Flaws!

Slideshow: the top 10 things Corvette owners want in the C9 Corvette

By Michael S. Palmer | 2026-04-30 12:41:15


VIEW MORE
story-1
10 Revolutionary 'Corvette Firsts' Most People Don't Know

Slideshow: 10 Important Corvette 'firsts' that every fan should know.

By Joe Kucinski | 2026-04-29 17:02:16


VIEW MORE
story-2
5 Reasons to Upgrade to an LS6-Powered Corvette; 5 Reasons to Stay LT2

Slideshow: Should you buy a 2020-2026 Corvette or wait for 2027?

By Michael S. Palmer | 2026-04-22 10:08:58


VIEW MORE
story-3
2027 Corvette vs The World: Every C8 vs Its Closest Competitor

Slideshow: 2027 Corvette lineup vs the world.

By Joe Kucinski | 2026-04-24 16:12:42


VIEW MORE
story-4
10 Most Common Corvette Problems of the Last 20 Years!

Slideshow: 10 major Corvette problems from the last 20 years.

By Joe Kucinski | 2026-04-14 16:37:05


VIEW MORE
story-5
5 MOST and 5 LEAST Popular Corvette Model Years in History!

Slideshow: 5 most and least popular Corvette model years.

By Joe Kucinski | 2026-04-08 13:25:01


VIEW MORE
story-6
2027 Corvette Buyer's Guide: Everything You Need to Know!

Slideshow: 2027 Corvette buyer's guide

By Joe Kucinski | 2026-04-17 16:41:08


VIEW MORE
story-7
10 Things C8 Corvette Owners Hate (But Won't Tell You)

Slideshow: 10 things C8 Corvette owners hate, but won't tell you.

By Joe Kucinski | 2026-04-01 18:36:07


VIEW MORE
story-8
10 Best Corvettes Coming to Barrett-Jackson Palm Beach 2026!

Slideshow: Should you add one of these incredible Corvettes to your garage?

By Brett Foote | 2026-04-01 18:14:05


VIEW MORE
story-9
Every Corvette Grand Sport Explained! (C2, C4, C6, C7, & C8)

Slideshow: Every Corvette Grand Sport explained

By Joe Kucinski | 2026-03-26 07:13:44


VIEW MORE