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949Racing - Miata Accessories 949 Racing 20601 Canada Rd Suite A Lake Forest, CA 92630-8100

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Old 04-17-2016, 11:15 PM   #1
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Default twin disk questions...

Bought a used twin disk and it looks to be in great shape. Can you supply the specs for the disks so I can check wear to see if they need to be changed.

Thanks
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Old 04-17-2016, 11:27 PM   #2
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Metallic or organic? Are they close to the rivets?
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Old 04-17-2016, 11:35 PM   #3
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Look organic.

Not really close, but Id like to be more precise than that. lol
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Old 04-17-2016, 11:38 PM   #4
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Look organic.

Not really close, but Id like to be more precise than that. lol
You can't buy new organic discs. You have to get them resurfaced. I got mine resurfaced. The material that was used for mine was was .125" material on both sides. With an overall thickness of .308. I would expect new to be somewhere close to that. The rivets take up a decent amount of that material too.
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Old 04-17-2016, 11:44 PM   #5
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You can't buy new organic discs. You have to get them resurfaced. I got mine resurfaced. The material that was used for mine was was .125" material on both sides. With an overall thickness of .308. I would expect new to be somewhere close to that. The rivets take up a decent amount of that material too.
Can you buy any new disks for it? Where you get them resurfaced? What was turn around time and price.

thanks!
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Old 04-17-2016, 11:45 PM   #6
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You can buy new ceramic discs. I had mine resurfaced at a local friction shop. Cost $60 and had a couple day turnaround time.
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Old 04-17-2016, 11:48 PM   #7
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Wow thats cheap.

I dont see the ceramic disks on 949 page, they the ones that sell it?
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Old 04-17-2016, 11:50 PM   #8
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Whats pros and cons of ceramic and organic?
Your car a street car? What kinda power?
Now is its manors?
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Old 04-17-2016, 11:51 PM   #9
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I'm planing a 350whp street car. I'm talking Ac and PS and all the happy things in life.
Comphy clutch is a must.
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Old 04-17-2016, 11:53 PM   #10
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Organic is hard to drive on the street. Ceramic is impossible. I love it. The shifting is ******* amazing. Would not run a ceramic on the street. Organic is hard enough already.

Replacement Discs for SuperMiata 7.25" Race Clutch
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Old 04-17-2016, 11:55 PM   #11
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I'm planing a 350whp street car. I'm talking Ac and PS and all the happy things in life.
Comphy clutch is a must.
IMO it's not a comfy clutch. Not compared to OEM. I haven't driven anything else though. I know Emilio and savington praise the organic for its Street manners.

The flywheel is so light and the MOI is so small that it takes getting used to. I've had it for a few months and I still stall every few times I drive it.
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Old 04-17-2016, 11:57 PM   #12
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Quote:
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Organic is hard to drive on the street. Ceramic is impossible. I love it. The shifting is ******* amazing. Would not run a ceramic on the street. Organic is hard enough already.

Replacement Discs for SuperMiata 7.25" Race Clutch
I see, ran a 4 puck unsprung in a my chumpcar and yea it sucked. Def not a street car thing.

Now to find a place locally to resurface these things. Never heard of anyone local doing this.

Thanks for the help bro
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Old 04-17-2016, 11:59 PM   #13
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I see, ran a 4 puck unsprung in a my chumpcar and yea it sucked. Def not a street car thing.

Now to find a place locally to resurface these things. Never heard of anyone local doing this.

Thanks for the help bro
Look for truck supply places. Anyone who can reshoe drum brakes or rebuild truck clutches.
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Old 04-18-2016, 01:03 AM   #14
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You bought a racing specific clutch for a street car. How you can expect it to be "comphy" and have street manners is beyond me.
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Old 04-18-2016, 09:05 AM   #15
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You bought a racing specific clutch for a street car. How you can expect it to be "comphy" and have street manners is beyond me.
Ive driven street cars with much worse, trust me. I have a 700+ whp Foxbody in the garage. Just know any 400 whp miata are on borrowed time on a single disk.
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Old 04-18-2016, 12:47 PM   #16
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Try to keep the total thickness below .290 if you want it to release smoothly. Thicker than that and it will be prone to drag until its got quite a few hours on it.
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Old 04-18-2016, 12:49 PM   #17
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^^good to know. Mine didn't have that problem, but I also had the flywheel turned. Just scuffed up the floater plates though. Couldn't have them turned where they did my stuff.
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Old 04-18-2016, 12:54 PM   #18
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Try to keep the total thickness below .290 if you want it to release smoothly. Thicker than that and it will be prone to drag until its got quite a few hours on it.

Thanks.

I imagine it's a standard miata pilot bearing?
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Old 04-18-2016, 12:57 PM   #19
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Yes.
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Old 04-18-2016, 11:18 PM   #20
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Quote:
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You bought a racing specific clutch for a street car. How you can expect it to be "comphy" and have street manners is beyond me.
Speedsport probably would have been a better choice for the intended use. Clutch was magical, not as hardcore as the 949 MOI wise but stupid easy to modulate without much pedal pressure and didnt mind if you totally nuked it. I have no idea why they made a steel street version of that clutch the one that was like a pound heavier than the 949 was easier to drive in traffic than the oem wrx clutch. They dont seem to be in business any more.
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