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1.6 to 1.8 clutch and flywheel upgrade

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Old 11-09-2014, 02:57 PM
  #41  
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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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Old 11-09-2014, 04:58 PM
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Originally Posted by Braineack
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.
I hate to be retardedly redundant, but stage 1 as in this feller here...

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...
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Old 11-10-2014, 07:40 AM
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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.
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Old 11-10-2014, 08:50 AM
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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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Old 11-10-2014, 11:19 AM
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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.
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Old 11-10-2014, 11:36 AM
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Originally Posted by deezums
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.
Yes do the clutch the right way, mostly because it is a PITA to pull the trans and replace the clutch after you go cheap and then something ***** up.
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Old 11-10-2014, 01:06 PM
  #47  
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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
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:

vs.
large and in charge:
Attached Thumbnails 1.6 to 1.8 clutch and flywheel upgrade-stock_miata_clutch.jpg   1.6 to 1.8 clutch and flywheel upgrade-miata_clutch_daikin_1.jpg  
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Old 11-10-2014, 01:11 PM
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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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Old 11-10-2014, 02:30 PM
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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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Old 11-10-2014, 03:14 PM
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there's like 20-40 of them avaiable for less than $40 on car-part.com
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Old 11-10-2014, 07:19 PM
  #51  
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I have the lightweight chromoly f1 flywheel and track the **** 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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Old 11-10-2014, 07:38 PM
  #52  
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Originally Posted by Braineack
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:

vs.
large and in charge:





The new 1.8 flywheel is bolt on direct on 1.6 models?

Any problem with the starter or gearbox case?
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Old 07-01-2023, 06:38 PM
  #53  
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Originally Posted by deezums
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.
130 at the wheel
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