Tech / General Engine Is your car making a strange sound or won't start? Thinking of adding power with a new combination? Need other technical information or engine specific advice? Don't see another board for your problem? Post it here!
Sponsored by:
Sponsored by: CARiD

Recommend me an air compressor

Thread Tools
 
Search this Thread
 
Old Sep 30, 2025 | 05:40 PM
  #1  
Pro's Avatar
Pro
Thread Starter
Supreme Member
20 Year Member
 
Joined: Oct 2003
Posts: 1,085
Likes: 4
From: DFW
Car: 1992 Z28
Engine: 5.7 TPI
Transmission: 700R4
Axle/Gears: G80 3.23
Recommend me an air compressor

I don't know for sure yet if I need one. I'm just prepping. But the clutch is smoking when the AC is on (which only stays on for 5 second intervals). It takes some effort to turn it by hand when the engine is off.
Installed is part number 88964849.
Hopefully itll be ok to drive with the AC off. I assume as long as the clutch doesn't engage, I wont have me a fire.
Reply
Old Sep 30, 2025 | 09:31 PM
  #2  
Berlinetta00's Avatar
Member
Veteran: Marine Corp
20 Year Member
Liked
 
Joined: Nov 2002
Posts: 479
Likes: 15
From: Washington State
Car: '84 Berlinetta
Engine: ZZ4
Transmission: BTOD stage 3
Axle/Gears: 3.23 posi disc
Re: Recommend me an air compressor

Originally Posted by Pro
I don't know for sure yet if I need one. I'm just prepping. But the clutch is smoking when the AC is on (which only stays on for 5 second intervals). It takes some effort to turn it by hand when the engine is off.
Installed is part number 88964849.
Hopefully itll be ok to drive with the AC off. I assume as long as the clutch doesn't engage, I wont have me a fire.
Most compressors will be remanufactured, so brand is largely immaterial.

If the pulley is spinning freely with the AC off, you can just unplug it or leave it off and it wont cause any problems aside from not having AC or defrost. The short cycling is most likely due to the system being low on refrigerant, but if the clutch is smoking it is time for a reppacement. I have never seen a AC compressor cause an engine fire, but there is always a first time. Just replace it and the other related components with a full kit from a reputable supplier, but most compressors will not have a warranty if you install it yourself.
Reply
Old Sep 30, 2025 | 10:03 PM
  #3  
Pro's Avatar
Pro
Thread Starter
Supreme Member
20 Year Member
 
Joined: Oct 2003
Posts: 1,085
Likes: 4
From: DFW
Car: 1992 Z28
Engine: 5.7 TPI
Transmission: 700R4
Axle/Gears: G80 3.23
Re: Recommend me an air compressor

Is it usually just best to get a completely new unit, or find a replacement clutch/pulley assembly
Reply
Old Oct 1, 2025 | 11:43 AM
  #4  
Beeman's Avatar
Member
15 Year Member
 
Joined: Nov 2009
Posts: 412
Likes: 52
Re: Recommend me an air compressor

Compressors build pressure, with no air flow or an overcharge they can lock up. Have you put a gauge set on it? Is the fan moving air?
Reply
Old Oct 1, 2025 | 01:09 PM
  #5  
mikeceli's Avatar
Supreme Member
20 Year Member
iTrader: (2)
 
Joined: Jan 2005
Posts: 1,404
Likes: 200
From: S. UTAH
Car: 1989 IROC-Z 305 LB9 AT Convertible
Engine: LB9 305
Transmission: AT
Re: Recommend me an air compressor

I have had bad luck the the couple of Reman AC compressors's I tried, decades ago.

I have installed 3, "Four Seasons " brand NEW AC compressors and / or compressor Kits, with GREAT results! They even answered my questions, when I telephoned Four Seasons. Rockauto and Amazon both sell them.

I recommend you search craigslist and Facebook Marketplace, for the CORRECT R12 refrigerant. If so, only buy the 12-14 OZ cans of genuine R12/ Dichlorodifluoromethane. The propane sized R12 tanks, can easily be "Faked".
Reply
Old Oct 5, 2025 | 09:26 PM
  #6  
Pro's Avatar
Pro
Thread Starter
Supreme Member
20 Year Member
 
Joined: Oct 2003
Posts: 1,085
Likes: 4
From: DFW
Car: 1992 Z28
Engine: 5.7 TPI
Transmission: 700R4
Axle/Gears: G80 3.23
Re: Recommend me an air compressor

Originally Posted by Beeman
Compressors build pressure, with no air flow or an overcharge they can lock up. Have you put a gauge set on it? Is the fan moving air?
Yea there's plenty of flow. I had a gauge on it but its been a while and forgot numbers. So today I emptied the system and hooked up a vacuum for a few minutes. It's holding at about -20.
Reply
Old Oct 5, 2025 | 09:27 PM
  #7  
Pro's Avatar
Pro
Thread Starter
Supreme Member
20 Year Member
 
Joined: Oct 2003
Posts: 1,085
Likes: 4
From: DFW
Car: 1992 Z28
Engine: 5.7 TPI
Transmission: 700R4
Axle/Gears: G80 3.23
Re: Recommend me an air compressor

Originally Posted by mikeceli
I have had bad luck the the couple of Reman AC compressors's I tried, decades ago.

I have installed 3, "Four Seasons " brand NEW AC compressors and / or compressor Kits, with GREAT results! They even answered my questions, when I telephoned Four Seasons. Rockauto and Amazon both sell them.

I recommend you search craigslist and Facebook Marketplace, for the CORRECT R12 refrigerant. If so, only buy the 12-14 OZ cans of genuine R12/ Dichlorodifluoromethane. The propane sized R12 tanks, can easily be "Faked".
I might not have made it clear, but its a R134a system.
Reply
Old Oct 6, 2025 | 04:23 AM
  #8  
mikeceli's Avatar
Supreme Member
20 Year Member
iTrader: (2)
 
Joined: Jan 2005
Posts: 1,404
Likes: 200
From: S. UTAH
Car: 1989 IROC-Z 305 LB9 AT Convertible
Engine: LB9 305
Transmission: AT
Re: Recommend me an air compressor

Originally Posted by mikeceli
I have had bad luck the the couple of Reman AC compressors's I tried, decades ago.

I have installed 3, "Four Seasons " brand NEW AC compressors and / or compressor Kits, with GREAT results! They even answered my questions, when I telephoned Four Seasons. Rockauto and Amazon both sell them.

I recommend you search craigslist and Facebook Marketplace, for the CORRECT R12 refrigerant. If so, only buy the 12-14 OZ cans of genuine R12/ Dichlorodifluoromethane. The propane sized R12 tanks, can easily be "Faked".
Originally Posted by Pro
I might not have made it clear, but its a R134a system.
What year is your car? I thought all Third Gen F bodies were R12 AC systems? Unless yours had R134A installed?
Reply
Old Oct 6, 2025 | 10:37 AM
  #9  
Pro's Avatar
Pro
Thread Starter
Supreme Member
20 Year Member
 
Joined: Oct 2003
Posts: 1,085
Likes: 4
From: DFW
Car: 1992 Z28
Engine: 5.7 TPI
Transmission: 700R4
Axle/Gears: G80 3.23
Re: Recommend me an air compressor

Its a 92. When I bought it with 85k miles, it had 134a already.
Reply
Old Oct 6, 2025 | 05:45 PM
  #10  
Pro's Avatar
Pro
Thread Starter
Supreme Member
20 Year Member
 
Joined: Oct 2003
Posts: 1,085
Likes: 4
From: DFW
Car: 1992 Z28
Engine: 5.7 TPI
Transmission: 700R4
Axle/Gears: G80 3.23
Re: Recommend me an air compressor

But now that its empty, i need to find out it's capacity. I assume 30 ounces ?
Reply
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
puma1552
Tech / General Engine
3
Aug 17, 2010 12:09 PM
MikeT 88IROC350
Tech / General Engine
3
Nov 11, 2009 06:50 PM
tph87
Cooling
10
Apr 5, 2006 11:19 AM
StaticVertigo
Cooling
14
Jun 3, 2005 02:20 PM
IROCME
Tech / General Engine
2
Jul 4, 2002 01:53 PM




All times are GMT -5. The time now is 09:10 PM.