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Suspension, Brakes, Drivetrain discuss the wondrous effects of boost and your miata...

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Old 04-15-2010, 01:49 AM   #41
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Well I started slippin my stock clutch at 6 psi. The Stage one held to about 10-12psi. But I'm stupid to be running 14+ PSI. FYI my track car only see's the track. Its luck to get out of 3rd gear off the trailer. My daily that isn't turbo I have a stage 2, but thats just a high comp weekend car.
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Old 04-17-2010, 12:34 PM   #42
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I run a track only 1.8 94 miata with bell engineering series 3 turbo kit on a stock clutch which is now slipping. I beleive it is putting down 175-200rwhp. From what I am gathering, Flyin Miata stage 2 is the way to go, but I am curious what kind of life expectancy you guys think a stocker would do. Its an HPDE only car, so it never sees stop and go, and except for odd transportation run or a quick hooligan ride, it only sees road courses.

Do you think the FM is necessary or can I get away with a stocker for the next 5k miles of road course driving?

Thanks for any reply's
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Old 04-18-2010, 02:50 AM   #43
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Well I got my Stage 3 F1 clutch in last night. This morning I took it to the Autocross track. It seemed to be working fine the whole way there. I didn't boost up to high. When I hit the track I turned my boost up to 14 PSI like always. Right out of the gate it was slipping. I had to stay off the throttle the whole time. I turned the boost down to 10 PSI and it did alright. On the way home I could boost in 4 or 5th without it slipping. In a nut shell I think that the Clutches are as we all see hit and miss. But rest assured I'm GOING to get my money back.
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Old 04-18-2010, 03:14 AM   #44
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Wait, so you didn't break it in at all, just strait to autocross? And it started slipping? Slick.
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Old 04-18-2010, 03:26 AM   #45
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Yeah no break in. I didn't have the time. It can in yesterday at 4 pm, then in the car, then party all night till 430 am. Then up to race at 9:30. I mean break in shouldn't take long. The whole 500 mile thing is bull. I'm just trying to find out what my RWPH is? No dinos near by. FYI this is on my beater car. T-28 315 supra injects, Bipes and Begi, and Walbro 190 10psi street, 14 track. AEM wideband says its good and rich, sparks look good.
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Old 04-18-2010, 03:29 AM   #46
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Quote:
Originally Posted by Myspeed123 View Post
Well I got my Stage 3 F1 clutch in last night. This morning I took it to the Autocross track. It seemed to be working fine the whole way there. I didn't boost up to high. When I hit the track I turned my boost up to 14 PSI like always. Right out of the gate it was slipping. I had to stay off the throttle the whole time. I turned the boost down to 10 PSI and it did alright. On the way home I could boost in 4 or 5th without it slipping. In a nut shell I think that the Clutches are as we all see hit and miss. But rest assured I'm GOING to get my money back.
I think they call that an improper break in. You overheated the ****.
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Old 04-18-2010, 03:37 AM   #47
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Myspeed123. You think brake pad glazing is bull too? Bed in your brakes, break in your clutch.

You better wait a few weeks before you call to get a refund.
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Old 04-18-2010, 04:18 AM   #48
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Quote:
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I think they call that an improper break in. You overheated the ****.
And, based on that, you're not gonna see a single ******* penny.
More than that, even if you can prove to them that the clutch was broken in properly, they'll blame it on improper installation.

With FM, I never had to baby the thing, and it came with warranty. Plus, I know that if anything ever went wrong, FM will back their product up.

Good luck with yours!
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Old 04-29-2010, 12:20 PM   #49
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I was considering using F-1's chromolly flywheel with their stage 1 clutch (I've seen these before on eBay and was tempted by their pricing, but was apprehensive - then I heard 949 retailed them and I thought that a forum friendly retailer's endorsement meant a degree of legitimacy).

I won't be boosting (I just join all miata forums for the R&D), but on other networks, they said you guys here used them alot. Perhaps the F-1 flywheel with the Exedy value clutch may be a more reliable selection.

Additionally, on 949's website, they suggested switching 1.8 clutch and flywheel components to the 200mm, lighter 1.6 parts to retain even less weight. I'm considering doing that too since I won't venture distantly from stock power.
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Old 04-29-2010, 03:36 PM   #50
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Well after a heated battle with gripforce we found that the pressure plate was bad. They shipped me a whole new kit, and even sent me a solid stage3 rather then the sprung stage 3. we'll see what happens
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Old 04-29-2010, 07:26 PM   #51
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Another vote for the FM Stage 1, got a couple thousand miles on mine and it's very comfortable.
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Old 04-29-2010, 07:29 PM   #52
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Quote:
Originally Posted by Myspeed123 View Post
Well after a heated battle with gripforce we found that the pressure plate was bad. They shipped me a whole new kit, and even sent me a solid stage3 rather then the sprung stage 3. we'll see what happens
Good thing they replaced it. Take it easy with the next one dude. Let us know how you like it, I'm still interested in the F1.
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Old 05-24-2010, 09:28 PM   #53
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I was taking a look on what 949 were selling, and saw that they were holding the

-F1 Miata Clutch - Stage 3 Ceramic

and the

-F1 forged steel lightweight flywheel


fine for 295 ft-lbs for the 1.8L with a 11.7 lbs flywheel
or for 285 ft-lbs for the 1.6L with a 9.9 lbs flywheel

it's pretty cheap, is it worth it?

337$ for the cumbo...

better than this is the twin disk clutch for 1k++$

949 woud'nt sell crap?
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Old 05-24-2010, 09:31 PM   #54
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I'd like to think so
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Old 05-24-2010, 09:33 PM   #55
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no one else?
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Old 05-25-2010, 12:02 AM   #56
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I searched for "F1 Miata Clutch" on Ebay and found a few results. Same stuff wherever you buy it. Up to you whether you want to support a particular vendor.
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Old 05-25-2010, 12:07 AM   #57
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I have 1,000 miles on the F1 12lb CroMo flywheel and the FM1 clutch. So far so good.

If you want cheap, look into an Exedy heavy duty clutch. I suspect it will be a bit stiffer underfoot than the FM1.
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Old 05-25-2010, 02:01 AM   #58
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16 miles on a new engine, and a F1 light flywheel with a Stage 3 puck. So far so good.
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Old 05-25-2010, 06:15 PM   #59
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I know, from youtube videos, what can happens with a cheap flywheel (exploding flywheel) but with 240 lbs tq is there any chance it might explode?
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Old 05-26-2010, 12:12 AM   #60
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Quote:
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I know, from youtube videos, what can happens with a cheap flywheel (exploding flywheel) but with 240 lbs tq is there any chance it might explode?
It's not the torque that stresses it, it's the RPM. Forces trying to break it and energy stored (which is released if it does break) grow as the square of RPM.

Think of quality this way: We don't care nearly as much about the tens of thousands of plane flights that are completely uneventful as we do about the one flight that has a problem.

If you're the one whose flywheel explodes, you (and your passenger) are the one(s) in a position to lose your feet. People outside the car will probably be luckier, as it's likely to lose a lot of energy as it tears your car apart on the way out. How much do new feet cost? More than .
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