Hadsys vs. Denso AC Compressor?

[Losiracer2]

This past weekend the AC on my 93 EX Coupe quit working unexpectedly while leaving my driveway. I heard the compressor kick on, car started cooling well, then it got warm suddenly.

I've determined that my compressor has finally gone bad after almost 20 years of blowing cold R12 through the lines.

So, I go to find a local Denso dealer, because that's the compressor I thought I had on my car, couldn't really see the label over the layer of dirt. I bought yesterday, thinking I'd put it on tonight, only to find out the new compressor doesn't come with any line hookups!

I'm kinda perplexed now, the new one has what looks like a plate on top with a schrader valve, held on with 4 8mm bolts. My old one doesn't have this plate?

There's nothing to swap over onto the new compressor. The lines are cast into the housing of my old compressor.

So what am I to do? Am I limited to only getting this Hadsys compressor? Because the lines look different compared to my 90 EX 4dr's compressor. Looks like these were very rare compared to the Denso.

The part number on it is RC-17S







The part number on my new Denso compressor I bought is 471-1186 and looks like this:

[Losiracer2]

I did some research...these Hadsys compressors are ONLY found on a 93' EX and 93 SE Accords. Retail at honda? over 650 bucks new. So much for buying new. I'd be spending double what I spent on this new Denso!

This thread might help people. So far, if I want to keep my Denso compressor that I bought for 290, I'll have to also get Denso specific suction and discharge lines, as well as the AC compressor bracket that bolts to the block....idk still might be cheaper than going with a Hadsys compressor. But the damn thing lasted almost 20 yrs before the bleed port failed and vented all the R12 out.

http://www.cb7tuner.com/vbb/showthre...ghlight=hadsys

[Jarrett]

I know '94-'95 Accords with ABS used a Hadsys RC-17-D. These were made with R-134a in mind but the capacity is the same. That still makes them a good option because you can almost say for certain that it shouldn't have "black death" as there wouldn't have ever been R12 to mix with.

Just swap the RC-17-S back plate onto the new compressor and replace the large o-ring. The o-ring is a specialty item but I can get you the dimensions within the next few days.

Then it will fit just like the original. If you evacuate your R12 properly you can reuse it when you're finished.

[Losiracer2]

I know '94-'95 Accords with ABS used a Hadsys RC-17-D. These were made with R-134a in mind but the capacity is the same. That still makes them a good option because you can almost say for certain that it shouldn't have "black death" as there wouldn't have ever been R12 to mix with.

Just swap the RC-17-S back plate onto the new compressor and replace the large o-ring. The o-ring is a specialty item but I can get you the dimensions within the next few days.

Then it will fit just like the original. If you evacuate your R12 properly you can reuse it when you're finished.

My old compressor already vented out all remaining R12 in the system. but I do have 3 new cans 2 14oz and 1 12 oz that I got for a steal that I was planning on using for this new denso.

So the RC-17D simply swaps over without having to change the suction and discharge hoses? I would think the fittings would be in a different shape

Even pulley size/ribs/diameter and the offset is the same?

[Jarrett]

No, I said you'd have to swap out the back plate with the original RC-17-S one so that the fitting will match. The pulley will have one more rib, as all 5th generation Accords did.

[Losiracer2]

No, I said you'd have to swap out the back plate with the original RC-17-S one so that the fitting will match. The pulley will have one more rib, as all 5th generation Accords did.

Oh ok. so keep the RC-17S backplate with the new RC-17D compressor? Thats the ONLY thing I'd need to retain to switch to the new 94 EX one?

[C91BLX7]

Did the new compressor come with the manifold? If so i'd say getting different lines would be simpler/less headache.

[Jarrett]

Simpler, yes, but the Hadsys is a larger capacity.

[Losiracer2]

i found a place selling some called compressor international out of CA for pretty reasonable price.

217+20 shipping for a reman. Hadsys with a 1 yr warranty. Only thing I'm weary about is they called it a RC-17D for the 93 Accord where it should be called a RC-17S, but it does say R-12 so I'm thinking that's the one I need.

http://www.compressor-intl.com/HTML/HadsysF.htm

[Losiracer2]

I ended up buying a reman hadsys compressor on Ebay for 175 shipped. Comes with 1 yr warranty. Hopefully it'll do the trick.

[SEgirl]

Thanks for posting about this. I have 2 93 SE's with one of them being converted to the R-13 a while back. My other SE's A/C is not working, so will probably be looking at having to replace the compressor and get the conversion done.

[Leung]

you couldn't find a A/1 Cardone rebuilt compressor? I'll have to check on Monday to see if we can get one for my 90 DX.

[Losiracer2]

you couldn't find a A/1 Cardone rebuilt compressor? I'll have to check on Monday to see if we can get one for my 90 DX.

a 90DX will have a Denso compressor. This pertains to only 93 EX and SE accords

[Losiracer2]

UPDATE

The reman compressor I bought worked perfectly, but the damn clutch failed about 3 days after I installed it. I thankfully had my old compressor w/ clutch still and put that clutch on. It worked well until today, when I started hearing a faint metallic friction sound when the car's at idle with the AC off.

I think my old 220k mile clutch is finally starting to fail, just like the new reman one did. The copper wires in the magnet on the reman clutch got so hot that they basically welded themself to the pulley freezing everything in the clutch assembly....that's why i had to remove it.

Yesterday, 107 degrees, my AC started acting weird, like getting hot all of a sudden randomly...so I think my old clutch I put on there is almost going through the same issues.

For now, I'll stop driving this car until I can source another clutch. I don't want to risk locking up my compressor since they're so hard to find it seems. None of the parts stores in AZ had one in stock and they all wanted over 450 so that's why I ordered online.

If anyone out there has a clutch for this specific Hadsys RC17-S compressor that they don't need, I'll gladly take it off your hands. Again this ONLY came on 93' EX and SE accords

[wildBill83]

I did the RC-17D to RC-17S swap on my '93 SE a few months back. I can confirm that it is simple and effective and has not failed yet. You only need to swap the back plate.

I would assume any rebuilt RC-17S out there these days will have an aged clutch, and some companies do not replace or warranty the clutch on rebuilt units. Also the RC-17D internal o-rings are all buna-n and more compatible to R134a refrigerants. By getting a RC-17D and converting you are getting a newer clutch if the rebuilt unit doesn't have a replaced clutch on it already. If you get a remanufactured unit it should come with a new clutch as well as buna-n internal o-rings. Be sure you buy reman units not rebuilt units.

I have a RC-17S with a frozen clutch too, or else I would mail it to you. All the new clutches I found cost nearly as much as a reman for either RC-17* series compressors.

I thought about going to denso, but went with the converted reman RC-17D. Also the denso is a 6 piston compressor and the hadsys is a 7 piston compressor.

http://www.ebay.com/itm/94-HONDA-ACC...d03328&vxp=mtr
http://www.ebay.com/itm/Honda-Accord...2a5780&vxp=mtr




^notice the difference in the back plate furthest from the pulley?