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all TQ figures I'll ever state are at the wheels, since we dyno at the wheels and dont typically pull the motor to do so.
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Originally Posted by Braineack
(Post 1181734)
I've seen the Exedy Stage 1 hold over 220tq fine.
I wouldn't get the Pro-kit one you linked, but the Stage 1. Exedy Racing Stage 1 Organic Clutch Kit 1990 1993 Mazda Miata 1 6L I4 DOHC B6 ZE | eBay If it holds till rod breaking territory then slips and still drives mostly stock, I think I might like that thing. Seems a cheap choice with my stock FW... |
Not sure if it was a 1.8L or 1.6L clutch but I always recommend putting in a 1.8L sized clutch anyway--it will always hold more TQ all other things being equal.
It's $310 from the same seller. The FM STG1 is $350. and the ACT ZM2-HDSS is $460. Dont see the 949 on their website anymore. |
My car's previous owner had a 1.8 flywheel with oem clutch on my 1.6L JRSC, it lasted about 10000 miles and it started slipping. That was at 8psi
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I need me a 1.8 FW still I guess. Ebay lists the 1.6 stage 1 at 210ftlbs, but everywhere else is 130ftlbs or so...
Getting back to FM prices again, may as well just do it right I guess. |
Originally Posted by deezums
(Post 1181940)
I need me a 1.8 FW still I guess. Ebay lists the 1.6 stage 1 at 210ftlbs, but everywhere else is 130ftlbs or so...
Getting back to FM prices again, may as well just do it right I guess. |
2 Attachment(s)
When you go from a 200mm ACT HD to a 215mm the TQ load goes from 195 to 245. That's about 20% better with the same level PP and clutch disc.
here's directly from Exedy:
Originally Posted by 1.6L STG1
Disc Size 200mm
Spline Teeth / Major Dia 22T / 24.3mm Clamping Force/Load exerted (lbs) 1169 Disc Material Organic Number of Disc Single Type (Push/Pull) Push Sprung Center (D-core) Yes Clutch Torque 204 Torque Capacity at Wheels 131 Torque Capacity at Flywheel 163
Originally Posted by 1.8L STG1
Disc Size 215mm
Spline Teeth / Major Dia 22T / 24.3mm Clamping Force/Load exerted (lbs) 1322 Disc Material Organic Number of Disc Single Type (Push/Pull) Push Sprung Center (D-core) Yes Clutch Torque 256 Torque Capacity at Wheels 164 Torque Capacity at Flywheel 204 I just wouldn't use a 1.6L sized clutch for boost unless you get a super heavy PP with higher clamping loads. If you look at the difference in the diaphragm springs, it's apparent why: teeny tiny: https://www.miataturbo.net/attachmen...ine=1415643121 vs. large and in charge: https://www.miataturbo.net/attachmen...ine=1415643121 |
The light weight FX 4140 CHROMOLY FLYWHEEL is worth it. I have been running one with a 949 sport clutch for a month now and don't have any complaints. I would not cheap out on the clucth kit, but the flywheel works.
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I'd like a light flywheel, and I'd order a ebay one, but I'm still thinking about trying to find a cheap stock 1.8 wheel. ~$400 bucks with the FM stage 1, hopefully.
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there's like 20-40 of them avaiable for less than $40 on car-part.com
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I have the lightweight chromoly f1 flywheel and track the shit out of it with no complaints. It's very easy to DD as well. It's one of the best mod I've done.
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Interesting
Originally Posted by Braineack
(Post 1181974)
When you go from a 200mm ACT HD to a 215mm the TQ load goes from 195 to 245. That's about 20% better with the same level PP and clutch disc.
here's directly from Exedy: a 20% increase in TQ as well. I just wouldn't use a 1.6L sized clutch for boost unless you get a super heavy PP with higher clamping loads. If you look at the difference in the diaphragm springs, it's apparent why: teeny tiny: https://www.miataturbo.net/attachmen...ine=1415643121 vs. large and in charge: https://www.miataturbo.net/attachmen...ine=1415643121 :eek: The new 1.8 flywheel is bolt on direct on 1.6 models? Any problem with the starter or gearbox case? |
Originally Posted by deezums
(Post 1181940)
I need me a 1.8 FW still I guess. Ebay lists the 1.6 stage 1 at 210ftlbs, but everywhere else is 130ftlbs or so...
Getting back to FM prices again, may as well just do it right I guess. |
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