A/C compressor mount question 1980
Thread Starter
Pro
Joined: Feb 2020
Posts: 723
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From: Kannapolis NC
A/C compressor mount question 1980
I was taking the headers off mine and the right front header bolt is also part of the mount for the A/C compressor. There is a spacer that holds the mount out from the motor. There is a long stud through the spacer and mount into the motor. Then a nut tightens the mount and header down. I assume this is how it was done originally, but I'm not really sure. The compressor was changed over to R-134A, and I don't know what all was changed when that was done. The spacer I took out was a socket. I don't think that was what GM would have done. I was thinking I should find the original spacer since Pete probably dropped and lost the original and the socket was close enough and on he goes. However, I started thinking what if the header flange is a different thickness than the original manifold thickness. That would cause a different spacer to be needed.
Is this spacer an original part? What size should it be? What is the thickness of the original manifold? My headers of 1/4" thick. Can you buy the spacer and stud? The stud on mine looks OK, but I'm not really sure.
Is this spacer an original part? What size should it be? What is the thickness of the original manifold? My headers of 1/4" thick. Can you buy the spacer and stud? The stud on mine looks OK, but I'm not really sure.
Dr. Detroit
Joined: Mar 2012
Posts: 10,097
Likes: 4,027
From: New Braunfels Texas
Look here......buy the right diameter (Probably 3/8" ID) and cut to length........
https://www.mcmaster.com/standard-unthreaded-spacers
Jebby
https://www.mcmaster.com/standard-unthreaded-spacers
Jebby
Instructor
Joined: Jul 2012
Posts: 171
Likes: 22
From: Kentucky
I was taking the headers off mine and the right front header bolt is also part of the mount for the A/C compressor. There is a spacer that holds the mount out from the motor. There is a long stud through the spacer and mount into the motor. Then a nut tightens the mount and header down. I assume this is how it was done originally, but I'm not really sure. The compressor was changed over to R-134A, and I don't know what all was changed when that was done. The spacer I took out was a socket. I don't think that was what GM would have done. I was thinking I should find the original spacer since Pete probably dropped and lost the original and the socket was close enough and on he goes. However, I started thinking what if the header flange is a different thickness than the original manifold thickness. That would cause a different spacer to be needed.
Is this spacer an original part? What size should it be? What is the thickness of the original manifold? My headers of 1/4" thick. Can you buy the spacer and stud? The stud on mine looks OK, but I'm not really sure.
Is this spacer an original part? What size should it be? What is the thickness of the original manifold? My headers of 1/4" thick. Can you buy the spacer and stud? The stud on mine looks OK, but I'm not really sure.
https://www.zip-corvette.com/68-82-c...-mounting.html
Racer
Joined: Jul 2017
Posts: 364
Likes: 103
From: Atlanta
I am getting ready to redo a lot of things in my engine bay, including installing headers, so I have a new bolt and spacer for the AC bracket for my 80.
I was unable to find the stud itself, so I bought the AC compressor bolt kit from Zip, and the spacer. The spacer is 1" long, and there are plenty of threads left for your header flange..
I was unable to find the stud itself, so I bought the AC compressor bolt kit from Zip, and the spacer. The spacer is 1" long, and there are plenty of threads left for your header flange..
Last edited by Black72GTS; Jun 1, 2020 at 04:40 PM.
