A/C Parts
07-10-2007, 05:27 AM
#1
Three Wheelin'
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A/C Parts
I am about to rebuild an 78 A/C compressor. Any tips on what to watch for?
I will need a rebuild kit. What is the best source? The 78 Compressor looks to be different from the newer ones.
I aill also be rebuilding an 88 compressor and will need seals for that as well.
One of the hoses on the 78 is broken. Any ideas what years will fit. There are so many differences in the 78 from the newer cars as it is difficult to find parts.
What is the best source for a dryer for the 78 and what o-rings should I be replacing in the system.
Thanks much
Dan the Pod Guy.
I will need a rebuild kit. What is the best source? The 78 Compressor looks to be different from the newer ones.
I aill also be rebuilding an 88 compressor and will need seals for that as well.
One of the hoses on the 78 is broken. Any ideas what years will fit. There are so many differences in the 78 from the newer cars as it is difficult to find parts.
What is the best source for a dryer for the 78 and what o-rings should I be replacing in the system.
Thanks much
Dan the Pod Guy.
07-10-2007, 10:49 AM
#2
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Dan,
Don't waste your time on that old 1978 pump. Parts are pretty scarce. Just rig a later model pump up. With regards to the rebuild, I would leave that to a pro. Most people screw up the end shaft seal. With freon at about $80/lb, it is well worth it. The 1988 compressor can be had properly rebuilt for under $200 if your core is good.
Don't waste your time on that old 1978 pump. Parts are pretty scarce. Just rig a later model pump up. With regards to the rebuild, I would leave that to a pro. Most people screw up the end shaft seal. With freon at about $80/lb, it is well worth it. The 1988 compressor can be had properly rebuilt for under $200 if your core is good.
07-10-2007, 12:36 PM
#3
Rennlist Member
Here's my story on a '79:
https://rennlist.com/forums/928-forum/362221-an-ob-a-c-story-long.html
I searched everywhere for a rebuild 'kit', but none found. As I wrote, even the seal kit is tough to find, and expensive. As far as your hoses, I'm guessing they are the same for '78 - '79 or any other car that had the Behr compressor. I had mine rebuilt (mainly because of the expense of the fittings and their orientation at the compressor). Hope that helps.
https://rennlist.com/forums/928-forum/362221-an-ob-a-c-story-long.html
I searched everywhere for a rebuild 'kit', but none found. As I wrote, even the seal kit is tough to find, and expensive. As far as your hoses, I'm guessing they are the same for '78 - '79 or any other car that had the Behr compressor. I had mine rebuilt (mainly because of the expense of the fittings and their orientation at the compressor). Hope that helps.
07-10-2007, 05:07 PM
#5
Rennlist Member
Brian, not sure if you read the thread I linked in post #3? An upgrade is easy, but takes more money - different mount (not much $$$), different hoses ($$$$$), and you need a correct core unless you want to buy a rebuildable dead compressor off of eBay or somewhere else. Since my hoses were good, it seemed smarter to go with the original Behr. If the hoses have to be replaced anyway, I would have probably opted to go with the Nippondenso assuming I could find a core for a reasonable price.
07-11-2007, 06:09 AM
#6
Three Wheelin'
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Here is what I have come up with since the original post.
Griffin sells a complete change over kit with a new compressor for $725 including hoses, dryer and o-rings. Brackets off old motors are easy enough to find.
Griffin also sells the older compressor for $299.
This seems the way to go. Then I found another source out of Arizona that sells bulk hose and other parts for the 928 for a reasonable price - Arizona Mobile Air. http://www.ackits.com
Both places sound like they know what they are doing. I am still undecided on how to go. I may get the 78 A/C compressor from Griffin and then make my own hoses. The crimping tool is only $160 so the first set of hoses pays for the tool - not a bad trade off since I am committed to fix four or five 928s this summer. Now that my friends found out I have the recovery machine and the tools they suddenly decided to fix their A/C.
In the old days there was talk of recondioning the dryers by putting then in an oven and then evacuating the system over night. Has anyone actually tried this technique. It sounds like it might work since the dryer simply has a desecant to absorb water. We used to have a desecant chamber at work and when the pellets changed color we would simply bake them and reuse them.
Anyone know of a good deal on vacuum pump oil or a source for schrader values?
Dan the Pod Guy
Griffin sells a complete change over kit with a new compressor for $725 including hoses, dryer and o-rings. Brackets off old motors are easy enough to find.
Griffin also sells the older compressor for $299.
This seems the way to go. Then I found another source out of Arizona that sells bulk hose and other parts for the 928 for a reasonable price - Arizona Mobile Air. http://www.ackits.com
Both places sound like they know what they are doing. I am still undecided on how to go. I may get the 78 A/C compressor from Griffin and then make my own hoses. The crimping tool is only $160 so the first set of hoses pays for the tool - not a bad trade off since I am committed to fix four or five 928s this summer. Now that my friends found out I have the recovery machine and the tools they suddenly decided to fix their A/C.
In the old days there was talk of recondioning the dryers by putting then in an oven and then evacuating the system over night. Has anyone actually tried this technique. It sounds like it might work since the dryer simply has a desecant to absorb water. We used to have a desecant chamber at work and when the pellets changed color we would simply bake them and reuse them.
Anyone know of a good deal on vacuum pump oil or a source for schrader values?
Dan the Pod Guy
07-11-2007, 07:02 AM
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Hi Dan,
For what it's worth, I went with a Griffith's A/C system for our 1989 928S4 which replaced the hoses and A/C pump with a later style pump. The system was installed over 6 years ago and has been running fine. The new style pump is lighter than the original and works very smoothly. Griffith's kit also has all of the mounting hardware for the job to correctly position the A/C pump in the original location since it is dimensionally smaller. No problems with this system and I installed it in a day. Griffith was also a 928 owner at one time and will spend time on the phone or email to help you out if needed.
Cheers,
Constantine
For what it's worth, I went with a Griffith's A/C system for our 1989 928S4 which replaced the hoses and A/C pump with a later style pump. The system was installed over 6 years ago and has been running fine. The new style pump is lighter than the original and works very smoothly. Griffith's kit also has all of the mounting hardware for the job to correctly position the A/C pump in the original location since it is dimensionally smaller. No problems with this system and I installed it in a day. Griffith was also a 928 owner at one time and will spend time on the phone or email to help you out if needed.
Cheers,
Constantine
Last edited by Black Sea RD; 07-12-2007 at 07:38 AM.
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07-12-2007, 12:07 AM
#8
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Hi Dan,
There are some other sources/resources mentioned in this thread.
https://rennlist.com/forums/928-forum/312404-a-word-of-caution-about-griffith-printthread.html
There are some other sources/resources mentioned in this thread.
https://rennlist.com/forums/928-forum/312404-a-word-of-caution-about-griffith-printthread.html
07-12-2007, 05:56 AM
#9
Three Wheelin'
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Originally Posted by Constantine
Hi Dan,
For what it's worth, I went with a Griffith's A/C system for our 1989 928S4 which replaced the hoses and A/C pump with a later style pump. The system was installed over 6 years ago and has been running fine. The new style pump is lighter than the original and works very smoothly. Grittith's kit also has all of the mounting hardware for the job to correctly position the A/C pump in the original location since it is dimensionally smaller. No problems with this system and I installed it in a day. Griffith was also a 928 owner at one time and will spend time on the phone or email to help you out if needed.
Cheers,
Constantine
For what it's worth, I went with a Griffith's A/C system for our 1989 928S4 which replaced the hoses and A/C pump with a later style pump. The system was installed over 6 years ago and has been running fine. The new style pump is lighter than the original and works very smoothly. Grittith's kit also has all of the mounting hardware for the job to correctly position the A/C pump in the original location since it is dimensionally smaller. No problems with this system and I installed it in a day. Griffith was also a 928 owner at one time and will spend time on the phone or email to help you out if needed.
Cheers,
Constantine
Constantine,
Thanks for the feedback. I have heard only good things about Griffith. He was very responsive with information and provided a lot of answers.
Dan the Pod Guy
