Type R4 A/C Compressor question
Thread Starter
Melting Slicks
Joined: Nov 2005
Posts: 3,323
Likes: 142
From: Green Valley Arizona
Type R4 A/C Compressor question
On the one I took off my car there is what looks like a relief valve screwed into the rear of the compressor next to where the lines connect. On the replacement compressor, there is not. The hole is not drilled out from when the part was cast. Is this the high pressure relief valve or something? I am not wanting to drill and tap this hole as it would result in metal shavings inside the compressor. Can I still use this or does it need to go back?
Thanks,
LannyL81
Thanks,
LannyL81
Drifting
Joined: Jun 2005
Posts: 1,523
Likes: 1
From: grand prairie texas
I agree with you thinking it is a high pressure relief valve. If it was me I would go back to the vender to see if he has one with the proper holes for the valve. Is there a spot on the new compressor that has a snap ring installed? Some different types of R-4's have a relief valve switch that is held in with a snap ring and when you get the compressor from the vender it will have a plug in that hole which means you may have to buy a different switch to make it work properly.
Race Director
Joined: Sep 2001
Posts: 10,560
Likes: 441
From: Wellington, FL
St. Jude Donor '11 thru '25
Originally Posted by wnmech
I agree with you thinking it is a high pressure relief valve. If it was me I would go back to the vender to see if he has one with the proper holes for the valve. Is there a spot on the new compressor that has a snap ring installed? Some different types of R-4's have a relief valve switch that is held in with a snap ring and when you get the compressor from the vender it will have a plug in that hole which means you may have to buy a different switch to make it work properly.
http://www.autoacforum.com/categories.cfm?catid=2
Last edited by Jud Chapin; Nov 18, 2006 at 09:12 AM.
Thread Starter
Melting Slicks
Joined: Nov 2005
Posts: 3,323
Likes: 142
From: Green Valley Arizona
Originally Posted by Jud Chapin
I would tend to agree here, but mrvette may be correct. Here is an a/c forum where you can get more opinions from those in the trade.
http://www.autoacforum.com/categories.cfm?catid=2
http://www.autoacforum.com/categories.cfm?catid=2
Thanks again to all,
LannyL81
Team Owner
Joined: Sep 2003
Posts: 88,393
Likes: 2
From: eville in
Originally Posted by Jud Chapin
I would tend to agree here, but mrvette may be correct. Here is an a/c forum where you can get more opinions from those in the trade.
http://www.autoacforum.com/categories.cfm?catid=2
http://www.autoacforum.com/categories.cfm?catid=2
Race Director
Joined: Sep 2001
Posts: 10,560
Likes: 441
From: Wellington, FL
St. Jude Donor '11 thru '25
Originally Posted by LannyL81
Checked out that site and WOW...learned more about the R4 compressor than I ever wanted to.....thanks. Still have not found out what for sure this thing is on the back and if I even need it. The compressor I took off was not original. Any 81 owners out there with an original AC compressor??
Thanks again to all,
LannyL81
Thanks again to all,
LannyL81
Jud
