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about 4-5 years ago I replaced my Denso condenser with a brand new one for quite cheap. I decided to look recently and didn't see them available anywhere anymore? have you guys seen any sources for them as of late?
Anyone ever find a place to get new Denso condensers?
Been a few threads on this recently, figured I would document a few things.
First off, you need to see what system you have, MANA or Denso. MANA is MAzda North America and was installed at the port when the cars came over from Japan. The receiver/dryer (that's the soda can-size thing up near the battery and in the intercooler duct) has 2 lines going to the top. If the drier is black, has a bracket that's welded on, and has a small box with a sight glass on the line, it's a MANA system. If it's a silver drier with a bracket that clamps around the drier and the sight glass is attached to the top of the drier, you have a a Denso system.
The only component that is shared between the two systems is the compressor - that's the pump that's driven by a belt. All the lines, the evaporator under under the dash, the condenser up front, they are all different. The threads on the fittings and fitting sizes are totally different.
Very few if any of the stock parts are available from Mazda any more.
Aftermarket wise, the Denso driers are available nearly anywhere for less than $20. They are typically available at local parts stores. The MANA drier isn't available anywhere for love or money. You could have a shop alter the AC lines and put in an aftermarket drier or maybe have the drier restored, there are places online that supposedly do that.
The exapansion valve in the evaporator seems to be available for both the Denso and MANA systems.
O-rings for each system are different sizes, I have a chart somewhere listing the sizes. I'll try and post that up. But, the O-rings are common AC o-rings, you do need to verify that they are the exact right size.
If you have a hole in a line, many AC shops can weld or braze the hole shut for a minimal amount. As the lines aren't available that's going to be a good way to go.
Big thing here - if you are pulling the AC out of the car, PLEASE sell the parts and keep them in circulation, don't just throw them out! The FD's AC, when working right, REALLY works well.
Dale
Dale did you have that list of O rings for the Denso set up? i'm looking to refresh mine as the condenser has a leak
TIA
I think I may have it at home. But, many times you can get an AC o-ring kit that comes with tons of sizes and match it up. Many times it's less price and hassle than the OEM parts from Mazda. I got a box of the green AC o-rings for like $15 with a TON of them in many sizes.
I think I may have it at home. But, many times you can get an AC o-ring kit that comes with tons of sizes and match it up. Many times it's less price and hassle than the OEM parts from Mazda. I got a box of the green AC o-rings for like $15 with a TON of them in many sizes.
Dale
I also have a denso a/c system and would like to know the sizes of all the o rings for replacement. At Autozone I can only find a black o rings in mm. OR is it supposed to be in inches?
Does anyone know where to buy the hardlines that go the Denso Dryer on a FD3s?
I had Tacoma lines welded onto my mana lines and was able to use the denso drier. Just get some from junk yard and find a place that’ll weld aluminum. I don’t know if the denso lines will fit the mana system.
Are the AC compressors the same even if it's R12 or R134a? My system is R134a; can I use a compressor from an R12 system?
This was already confirmed above, but I'm bumping to add a bit more to help with identifications for people. I see compressors sold without a sticker on the rear to help identify what is being purchased...
The rear port on the R134a compressor is ~15mm. I believe these are marked as TV12 compressors. This same port on my R12 MANA TV14 is ~13mm.
The side port on the R134a compressor is ~18mm, while the R12 MANA was ~15mm.
R12 Compressor has a slightly lower operating pressure delta than the R134a.
R12 is 15kg/cm^2 to 30kg/cm^2 (~1.47MPa to ~2.94MPa)
R134a is 1.67MPa to 3.53MPa
I'm looking to do the unnecessary task of updating my R12 MANA to a R134a Denso (less the evap).
I'm working with @Redbul to work through what will allow me to build out this system, in part using some RHD items. The Low Pressure line from the compressor to the evaporator is obviously drive-side specific, as is the line with the pressure switch going to the evaporator. We also believe the evaporator assembly itself to be a mirror'd design, so it wont work either. The insides are something we haven't spent too much time looking into, but at least keep in mind that Denso and MANA have different routing for the components inside the housing. I'll get here eventually...
I have the 'F110' condenser on order, and will look to mock up the system once it arrives. My hope is that I can identify a way to switch to a more available R134a system where some parts may still be available, and by only needing to [ideally] change the fittings to connect to the MANA evaporator. I hope to post an updates that covers how terribly this goes.
I am working on ConSynX on this and getting some surprises. Parts for the two (or four) systems seem to share similar shape (and perhaps part number) but we got stymied on the fittings, leading to some excess courier charges. I think Tomsn16 made up a very good list of parts, but I have discovered some omissions (unless some Honda parts have been slipped into my collection, haha)
.
This was already confirmed above, but I'm bumping to add a bit more to help with identifications for people. I see compressors sold without a sticker on the rear to help identify what is being purchased...
The rear port on the R134a compressor is ~15mm. I believe these are marked as TV12 compressors. This same port on my R12 MANA TV14 is ~13mm.
The side port on the R134a compressor is ~18mm, while the R12 MANA was ~15mm.
R12 Compressor has a slightly lower operating pressure delta than the R134a.
R12 is 15kg/cm^2 to 30kg/cm^2 (~1.47MPa to ~2.94MPa)
R134a is 1.67MPa to 3.53MPa
I'm looking to do the unnecessary task of updating my R12 MANA to a R134a Denso (less the evap).
I'm working with @Redbul to work through what will allow me to build out this system, in part using some RHD items. The Low Pressure line from the compressor to the evaporator is obviously drive-side specific, as is the line with the pressure switch going to the evaporator. We also believe the evaporator assembly itself to be a mirror'd design, so it wont work either. The insides are something we haven't spent too much time looking into, but at least keep in mind that Denso and MANA have different routing for the components inside the housing. I'll get here eventually...
I have the 'F110' condenser on order, and will look to mock up the system once it arrives. My hope is that I can identify a way to switch to a more available R134a system where some parts may still be available, and by only needing to [ideally] change the fittings to connect to the MANA evaporator. I hope to post an updates that covers how terribly this goes.
Did you ever consider using an RX-8 compressor, condenser, and modified line set? The expansion valve also looks the same as the one used in the Denso R134a FD system although it is a different part number.
Did you ever consider using an RX-8 compressor, condenser, and modified line set? The expansion valve also looks the same as the one used in the Denso R134a FD system although it is a different part number.
I did.
I’m hoping to go this route primarily to minimize fabrication.
I recently puzzled through putting together an RHD R134a system from the various random A/C parts I have. Fitting a complete system together was instructive in discovering which fixings fit. It was a bit of trial and error. Sorting the systems out would require much more work to identify the parts numbers and periodic changes to the system (some of such work as been done by others on the forum).
Spread of random Ac Parts I have Diagram for discussing AC pipping fo rRHD set-up Eaxmples of compressors. The r12 seem to have a blue electrical connector. I am not sure what the difference between the two R134A compressors are. Cases look similar on the ourtside. RHD system pieced together and connections hooked up. Diffuser in background. Reverse shot. LHD A/C system for comparison. At this stage it seems none of the fitting match up between the LHD and RHD systems. This could require further enquiry. LHD manual page showing differences of diffuser between Denso and Mana set-ups. I am not sure the differences. Japanese FSM page showing components for RHD system. This is from the original FSM. I do not know if it shows the R12 or R134a system.
Hi guys ... we have recently released our AC line kit for the LHD FDs running the Greddy Vmount. The kit is setup to allow use of the RX8 AC condenser and compressor. We have other iterations that will be offered like mounting the RX8 condenser to the OEM / OEM replacement radiators, as well as RHD FDs.
09-03-20, 08:04 AM
AC Bits - RHD R134a Set-up
