FD RX7 Air Conditioner System, and What I'll Be Doing
10-06-19, 11:24 AM
#1
FD RX7 Air Conditioner System, and What I'll Be Doing
After deliberating on whether or not do keep A/C, I have decided to stick with it. It is far too hot in the summer where I live. As most may already know, the system for these cars is... a PITA!
My car came with a little bit of the MANA system. As my car came with no engine, I was missing much of the MANA system. My car did, however, come with the evaporator, dryer, and a compressor. Instead of trying to piece-together a MANA or source a complete Denso system (either quite a cost), I have decided to do something interesting. I will be retaining my MANA evaporator (which I had tested at a radiator shop), and Frankensteining a MANA/Denso/RX-8 system. I do have some questions for the forum on this.
There is a pretty good detailed post on No Rotors by Half-Spec, which outlines some good info on connection types on the components, which I will be using. My goal is as follows:
MANA evaporator and expansion valve, RX-8 condenser (with built-in dryer), OEM reman. Denso compressor, and have a local auto A/C shop custom-fabricate the interconnecting piping. The real trick for me will be to also custom fabricate some brackets that will align the RX-8 condenser to bolt-up where the FD OEM Denso condenser once did. Why all this trouble? I will eventually be installing my Greddy V-mount, which has some provisions for the OEM Denso condenser, and I want to be able to install the RX-8 condenser as if it were the OEM FD Denso condenser.
For the Frankensteining, I will be collecting some of the RX-8 interconnecting piping to make sure my local A/C shop can just weld the hard piping in-between the end fittings.
I intend for this to be a serviceable system, in the same way as OEM, and may consider putting kits together if this is successful. We need some acceptable A/C repair options, and I would like to use as many Mazda OEM parts for this as possible.
My questions are as follows:
1. I have heard/read that the OEM FD Denso compressor is interchangeable with another make/model (Toyota, I think?), but no part numbers are available. I have yet to see any confirmation on any interchangeability on compressors. If there is another make/model that can bolt directly into the A/C comp. / P.S. pump bracket, AND have the connector match with the OEM harness connector, I would like see a model number if anyone can share.
2. If the OEM Denso compressor is the only choice, please let me know where you folks are buying your re-manufactured Denso compressors from. I will do Rock Auto or something if need be, but I would pay extra for a quality rebuilt compressor.
Thanks in advance!
My car came with a little bit of the MANA system. As my car came with no engine, I was missing much of the MANA system. My car did, however, come with the evaporator, dryer, and a compressor. Instead of trying to piece-together a MANA or source a complete Denso system (either quite a cost), I have decided to do something interesting. I will be retaining my MANA evaporator (which I had tested at a radiator shop), and Frankensteining a MANA/Denso/RX-8 system. I do have some questions for the forum on this.
There is a pretty good detailed post on No Rotors by Half-Spec, which outlines some good info on connection types on the components, which I will be using. My goal is as follows:
MANA evaporator and expansion valve, RX-8 condenser (with built-in dryer), OEM reman. Denso compressor, and have a local auto A/C shop custom-fabricate the interconnecting piping. The real trick for me will be to also custom fabricate some brackets that will align the RX-8 condenser to bolt-up where the FD OEM Denso condenser once did. Why all this trouble? I will eventually be installing my Greddy V-mount, which has some provisions for the OEM Denso condenser, and I want to be able to install the RX-8 condenser as if it were the OEM FD Denso condenser.
For the Frankensteining, I will be collecting some of the RX-8 interconnecting piping to make sure my local A/C shop can just weld the hard piping in-between the end fittings.
I intend for this to be a serviceable system, in the same way as OEM, and may consider putting kits together if this is successful. We need some acceptable A/C repair options, and I would like to use as many Mazda OEM parts for this as possible.
My questions are as follows:
1. I have heard/read that the OEM FD Denso compressor is interchangeable with another make/model (Toyota, I think?), but no part numbers are available. I have yet to see any confirmation on any interchangeability on compressors. If there is another make/model that can bolt directly into the A/C comp. / P.S. pump bracket, AND have the connector match with the OEM harness connector, I would like see a model number if anyone can share.
2. If the OEM Denso compressor is the only choice, please let me know where you folks are buying your re-manufactured Denso compressors from. I will do Rock Auto or something if need be, but I would pay extra for a quality rebuilt compressor.
Thanks in advance!
10-06-19, 01:58 PM
#2
There are several cars that use our compressor, but I don't the models off the top of my head. The compressor is identical, but the electrical connector can be a little different (still a single wire, just a different terminal connector).
I know that because I had to re-use my OEM connector when I installed my reman unit. There are lots of remans available online and on ebay if you just search for "1993 RX7 compressor".
That being said I haven't been thrilled with my reman unit. Its from Four Seasons which I have always had good luck with for other stuff, but it has less than 200 miles on it and it was already pretty noisy.
Regardless (and this should be in the instructions you receive) make sure to manually spin the compressor a few times with a spanner wrench before cranking the car up after you install it.
Honestly if you are going to go to the trouble of doing fabrication for your system already, you might consider looking into an adapter for the RX8 compressor. Its not on their site, but I believe RP sells a kit to do that, so its possible with some work.
Just my opinion. Maybe I just had bad luck with my reman.
I know that because I had to re-use my OEM connector when I installed my reman unit. There are lots of remans available online and on ebay if you just search for "1993 RX7 compressor".
That being said I haven't been thrilled with my reman unit. Its from Four Seasons which I have always had good luck with for other stuff, but it has less than 200 miles on it and it was already pretty noisy.
Regardless (and this should be in the instructions you receive) make sure to manually spin the compressor a few times with a spanner wrench before cranking the car up after you install it.
Honestly if you are going to go to the trouble of doing fabrication for your system already, you might consider looking into an adapter for the RX8 compressor. Its not on their site, but I believe RP sells a kit to do that, so its possible with some work.
Just my opinion. Maybe I just had bad luck with my reman.
10-06-19, 03:32 PM
#3
There are several cars that use our compressor, but I don't the models off the top of my head. The compressor is identical, but the electrical connector can be a little different (still a single wire, just a different terminal connector).
I know that because I had to re-use my OEM connector when I installed my reman unit. There are lots of remans available online and on ebay if you just search for "1993 RX7 compressor".
That being said I haven't been thrilled with my reman unit. Its from Four Seasons which I have always had good luck with for other stuff, but it has less than 200 miles on it and it was already pretty noisy.
Regardless (and this should be in the instructions you receive) make sure to manually spin the compressor a few times with a spanner wrench before cranking the car up after you install it.
Honestly if you are going to go to the trouble of doing fabrication for your system already, you might consider looking into an adapter for the RX8 compressor. Its not on their site, but I believe RP sells a kit to do that, so its possible with some work.
Just my opinion. Maybe I just had bad luck with my reman.
I know that because I had to re-use my OEM connector when I installed my reman unit. There are lots of remans available online and on ebay if you just search for "1993 RX7 compressor".
That being said I haven't been thrilled with my reman unit. Its from Four Seasons which I have always had good luck with for other stuff, but it has less than 200 miles on it and it was already pretty noisy.
Regardless (and this should be in the instructions you receive) make sure to manually spin the compressor a few times with a spanner wrench before cranking the car up after you install it.
Honestly if you are going to go to the trouble of doing fabrication for your system already, you might consider looking into an adapter for the RX8 compressor. Its not on their site, but I believe RP sells a kit to do that, so its possible with some work.
Just my opinion. Maybe I just had bad luck with my reman.
You mentioned "RP" might sell an adapter. Do you mean IRP? Thanks again! If you remember any part numbers from those other compressors, please let me know!
10-13-19, 01:22 PM
#6
I have been working on my a/c system for some time now. I was able to mount an rx8 condenser to my FD and also made custom lines. I am running a GREDDY V mount with my setup.
Right now the last bit of work is figuring out why/where my compressor connector is.. I noticed it is missing from my battery harness.. I am curious to know if there is an easier way to make this work.
Right now the last bit of work is figuring out why/where my compressor connector is.. I noticed it is missing from my battery harness.. I am curious to know if there is an easier way to make this work.
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10-14-19, 08:21 AM
#8
RX-7 Bad Ass
iTrader: (55)
I got an RX-8 AC compressor a while back as an experiment. It does NOT bolt to the FD AC bracket whatsoever, I don't remember the details but there were a number of things that made it not work.
If Rotary Performance figured out a way to make it work it would be great but I think it would be a pretty tricky bracket to make. Also the pulley for the compressor is smaller, you would need to change to a different belt size if you got it to line up.
Also, the harness picture above shows the harness off the AC compressor attached to the harness. If you follow that upstream slightly it's a white 1-wire connector, that is what you will normally see dangling from the harness. It's very similar in design to the connector for the water level sensor so you would have a reference for what it looks like.
Dale
If Rotary Performance figured out a way to make it work it would be great but I think it would be a pretty tricky bracket to make. Also the pulley for the compressor is smaller, you would need to change to a different belt size if you got it to line up.
Also, the harness picture above shows the harness off the AC compressor attached to the harness. If you follow that upstream slightly it's a white 1-wire connector, that is what you will normally see dangling from the harness. It's very similar in design to the connector for the water level sensor so you would have a reference for what it looks like.
Dale
10-14-19, 11:43 AM
#9
I'm more concerned with the condenser, right now. Fortunately, reman. compressors are still available, if only from junk houses like Four Seasons and the like. At least they're attainable.
My real focus is on the condenser. Even the OEM Denso units being NLA makes for a tough situation. If there is another make and model A/C compressor that built-up, and has the pulley line-up, I can make everything else work. I would need someone's confirmation on that, though. I'd rather have a factory new compressor from another model than a junky over-priced reman of questionable quality.
My real focus is on the condenser. Even the OEM Denso units being NLA makes for a tough situation. If there is another make and model A/C compressor that built-up, and has the pulley line-up, I can make everything else work. I would need someone's confirmation on that, though. I'd rather have a factory new compressor from another model than a junky over-priced reman of questionable quality.
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Flying_solo (07-25-20)
10-25-19, 07:32 AM
#11
I'm more concerned with the condenser, right now. Fortunately, reman. compressors are still available, if only from junk houses like Four Seasons and the like. At least they're attainable.
My real focus is on the condenser. Even the OEM Denso units being NLA makes for a tough situation. If there is another make and model A/C compressor that built-up, and has the pulley line-up, I can make everything else work. I would need someone's confirmation on that, though. I'd rather have a factory new compressor from another model than a junky over-priced reman of questionable quality.
My real focus is on the condenser. Even the OEM Denso units being NLA makes for a tough situation. If there is another make and model A/C compressor that built-up, and has the pulley line-up, I can make everything else work. I would need someone's confirmation on that, though. I'd rather have a factory new compressor from another model than a junky over-priced reman of questionable quality.
As far as other make and models you may run into the port sizes not matching up even though the compressor form factor is about the same.
We already proved in another thread that just because the compressor is a TV14C model doesn't mean it'll interchange with other TV14C's as far as port diameters. https://www.rx7club.com/3rd-generati...stems-1137448/
03-04-20, 07:32 AM
#12
F'n Newbie...
iTrader: (6)
I am stuck rebuilding the entire system forward of the firewall from scratch. I purchased a new compressor from discountacparts.com, the website sounds questionable but they have units advertised as new available. The new FD compressor: https://www.discountacparts.com/buyn...or/60-01478_NC
I ended up getting two compressors since the first one arrived in a worst-case situation. The compressor arrived with the electrical connector damaged and unusable. I was SUPER surprised and impressed with how well customer service handled it! I just called them, stated the issue, and they had a fresh unit sent while dispatching UPS to retrieve the broken unit. No additional costs, no headache, paperwork, or arguing... the second unit arrived a few days later and was in good condition
I ended up getting two compressors since the first one arrived in a worst-case situation. The compressor arrived with the electrical connector damaged and unusable. I was SUPER surprised and impressed with how well customer service handled it! I just called them, stated the issue, and they had a fresh unit sent while dispatching UPS to retrieve the broken unit. No additional costs, no headache, paperwork, or arguing... the second unit arrived a few days later and was in good condition
03-04-20, 08:34 AM
#13
I am stuck rebuilding the entire system forward of the firewall from scratch. I purchased a new compressor from discountacparts.com, the website sounds questionable but they have units advertised as new available. The new FD compressor: https://www.discountacparts.com/buyn...or/60-01478_NC
I ended up getting two compressors since the first one arrived in a worst-case situation. The compressor arrived with the electrical connector damaged and unusable. I was SUPER surprised and impressed with how well customer service handled it! I just called them, stated the issue, and they had a fresh unit sent while dispatching UPS to retrieve the broken unit. No additional costs, no headache, paperwork, or arguing... the second unit arrived a few days later and was in good condition
I ended up getting two compressors since the first one arrived in a worst-case situation. The compressor arrived with the electrical connector damaged and unusable. I was SUPER surprised and impressed with how well customer service handled it! I just called them, stated the issue, and they had a fresh unit sent while dispatching UPS to retrieve the broken unit. No additional costs, no headache, paperwork, or arguing... the second unit arrived a few days later and was in good condition
AC Compressor | Evaporator Core | Fuel Pump | Condenser | Water Pump | Clutch || TechChoice Parts
For my FC, I got a rebuilt compressor, new receiver/dryer, and new expansion valve and full set of HBNR (green) O-rings & seals from them for about $260 shipped. Overall a good experience. Similar to yours, the 1st compressor they shipped me had a defective clutch that would randomly engage even if the electrical connector was disconnected - probably got whacked in shipping. They quickly shipped me a replacement compressor that included a free shipping return box for the defective compressor. So far it's been working great in the FC, going on its 3rd AC season.
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fendamonky (03-04-20)
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