The RX-8 AC compressor has been common to use when converting to R-134a systems. The RX-8 compressor has a 4 rib pulley, and I wanted to use a 6 rib design like what was originally on the car. I did trial and error ordering a couple aftermarket ac clutch and pulley kits before finding one that works. Using only the pulley from this kit https://www.aliexpress.us/item/2251832722867570.html and the rest of the parts from the RX-8 compressor worked best. I've run this setup for 2 years without issue. The videos below show how to remove, install, and verify alignment. Another person can buy the SCSA06C compressor for the Corolla new and try that. For the rest of us who already purchased new RX-8 compressors, there is an option to modify it with the 6 rib pulley.




Removal

Installation

Alignment

 

Great videos! Unfortunately the store is on vacation so if anyone can find a different source to purchase this pulley, please link it below.

 

Nice, thanks for sharing and do you have any other tips when doing a RX8 compressor conversion?

 

No specific tips that aren’t in other threads. The JP3 Motorsports conversion kit is great quality. I used a new Denso compressor.

 

Anyone find a replacement part for what the OP has linked? It is no longer available, if someone found the same pulley, link it please

 

Also interested in this..

 

I believe this is the clutch. I'm not 100% on this, as there is a small difference in the compressor number from the original link, but this is the clutch for the MR2 compressor, so hopefully this would work as well. It's definitely a bit more than the 40 some bucks from the other link, but this shows the part number for the clutch, so maybe it could be shopped around.

https://onlineparts.toyotasouthatlan...841052090.html

 

I reached out to the company that was listed in the OP’s link and they responded right away with pricing. They can sell just the clutch and pulley, it’s about $28. Shipping is about $43. I’m going to order the part, I will post the results here when I get it.

 

The store has been on vacation for 2 weeks, how did you contact them?

 

Looked up the company online, and sent them an inquiry through their website.

https://www.hyoungacparts.com/contact-us.htm

 

I received the pulley from the Chinese company; it looks good, but I would recommend changing out the bearing inside the pulley. I don’t trust Chinese bearings, so I’ll get a replacement from Japan.

 

Still waiting to receive my pulley, but I had the same thought about the bearing. Probably is okay but who knows.

Appreciate if you could share the bearing part number when you have it figured out!

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can't the bearing be swapped from the pulley you're replacing to the new one?

 

Here is the bearing that is installed already, I’m trying to find a replacement. Particularly Denso.

 

Usually bearings get pretty banged up when you press them out. I’m betting I’ll end up doing that with my patience.

 

Had to order two of these pulleys. They stamp the bearing around where the pulley meets the edge, so you could use a Dremel to cut away the material and press the bearing out, but I'm lazy, so I ordered a new one without a bearing installed. The bearings they use are low quality.. I did some research on them. I’m not taking any chances with them failing after 10,000 miles. For anyone reading, try to get NSK or a brand made in Japan, the US, or Sweden. As of this post, sizes of 30x47x20mm are scarce. I had to source one off eBay since places like VXB Bearings are out of stock and mentioned that NSK no longer makes that size. Other suppliers may be phasing out this size too, so good luck with your search.

 

The other option may be to get the pulley without the bearing, and have it bored out to accept a larger bearing. Or possibly machining a ring to size the pulley bore down to the next common bearing size, but the bearing looks pretty thin already.

 

Here are some additional details about the installation. It was a straightforward process, thanks to the OP finding the perfect replacement pulley. As shown in the photos, the new pulley measurements are incredibly close to the original, making it a perfect fit. My only concern was the Chinese bearing mentioned earlier. If you're considering this modification, I recommend ordering the Chinese pulley without the bearing installed, as it makes replacing it with a higher-quality option, like the NSK bearing I used, much easier.


Rx8 pulley and clutch clearance, 0.5mm.


Chinese Pulley


Rx8 Pulley


Rx8 Pulley


Chinese Pulley


When installing the Chinese pulley, I added a 0.25mm. shim to increase the total shim size from 2.50mm (pictured above). to 2.75mm. This adjustment restored the 0.5mm. clearance between the pulley and clutch.


Rx8 pulley, notice the 6 stamp marks.


Chinese pulley, replaced its original Chinese bearing with an NSK bearing made in Japan. I chose not to punch around the pulley to allow for easier bearing replacement in the future. The fit is tight, and I believe the bearing won’t shift in the bore. If you are doing the same thing, it’s up to you to decide to center punch around.

 

Looks like it's no longer available.

 

The bearing or pulley?

 

The pulley. But I also can't read the PN of the NSK bearing you posted.

 

You'll need to email the company directly. Just click 'Send Inquiry' at the bottom of the page. They usually reply pretty quickly.

Here’s the link:
https://m.hyoungacparts.com/pid18479...47180-9224.htm

If the link ever goes dead, the pulley part number is HY-CH302, and the bearing part number is 30BD4720.

 

Just got my tracking number for the pulley. I used the email inquiry link posted above.

 

For the AC tensioner pulley, what did you end up using so that it was a 6-rib pulley to match the new 6-rib Rx-8 compressor pulley?

In my particular setup, on an FC, I’m trying to convert to a 6-rib pulley system with the JDLMFG.com alternator/AC side mount bracket in conjunction with the JP3 AC kit. The kit calls for an FD tensioner pulley; however, that is a 5-rib and I need a 6-rib.

 

Hi, first ever post. I used this thread to gain ideas for reinstalling air conditioning in my 1983 SA22C. RX7

I found this DENSO compressor that comes with a 6-rib belt. A perfect alternative to the 4-rib RX8 compressor, alleviating the need to swap clutch pulleys.

The 6 rib compressor is from a Toyota Corolla - ZZE122R 1.8L Petrol -1ZZ-FE - 2001 - 2007

Compressor Details

Brand - DENSO
Model - SCSA06C
Part Number - CM1680
Voltage -12V
Pulley -Type 6PV
Pulley - Diameter 98mm
Ports - Pad
Refrigerant Type - R134a