So rolled the dice and bought this flywheel off Ebay. Description said it was 13lb. aluminum fly wheel for 87-95 turbo. I could tell by the pictures it was a steel flywheel and thought it may be a RB lightweight steel flywheel for a turbo as from the pictures it didn't look like a n/a one. Now that I have received it and compared it to a stock TII flywheel I don't know what it goes to. Diameter is the same as a TII flywheel but the hole pattern matches a n/a pressure plate. Also the friction surface sits below the ring gear rather than slightly above it tike a turbo flywheel. I have so far been unable to verify the center hole pattern matches an auto counterweight as mine is in my car and I can't find my auto flex plate(I think I threw it away a long time ago). Any ideas. Was there a turbo flywheel that used a n/a clutch, or some kind of conversion with a non Mazda gearbox, or some other car completely. Sellers add said returns not accepted and I knew that going in so I haven't reached out to them as of yet as I figure I bought it at my own risk, but Ebay says it may qualify for their money back guarantee. If I could figure out what it actually goes to I could just resell it. In hindsight it is clear the mounting holes for the pressure plate are too far inboard of the ring gear to be a Turbo flywheel. Pictures are below. Any help is appreciated. Thanks.

 

I haven't had much time this week to pursue this further, but I think I am going to reach out to the seller and ask if they know what car this came out of. They sell primarily Rx-7 and other rotary parts.

 

i'm not sure, but i think the 5 speed Rx8's had the T2 diameter ring gear and an NA clutch?

 

Oh well, no way for it to work for me I guess. On the bright side the seller said it came out of a turbo car but if I can't use it, I can return it for a full refund. Looking at his other auctions it looks like a lot of his parts are JDM stuff. 99 spec turbos, TII engine with OS Gikken clutch, body parts and other misc. things. I figure it came in on a JDM engine so who knows what engine transmission comb the car it came from in Japan had going on. I thought maybe it was the flywheel portion of a complete kit that used a specific flywheel/ pressure plate combo and not the factory. stuff.

 

What's the OD of the friction surface? That almost looks like a flywheel made for a small diameter multiplate clutch.

 

here are some pics of a Mazdaspeed single disc for an FD. its likely to have been made by Exedy, although the current stuff doesn't look exactly the same.
anyways

 

9 & 1/8"
I wondered the same thing.

 

Took some measurements from an S4 auto flexplate. Counterweight mounting hole diameter is about 97.8mm with 10.5mm holes. Center hole diameter is 78mm.

 

Thanks, it's on its way back to the seller now.