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-   Suspension, Brakes, Drivetrain (https://www.miataturbo.net/suspension-brakes-drivetrain-49/)
-   -   Thinking about switching back to an act puck disk after the last trackday (https://www.miataturbo.net/suspension-brakes-drivetrain-49/thinking-about-switching-back-act-puck-disk-after-last-trackday-52953/)

theshdwconspracy 12-15-2010 05:31 PM

Theres an existing OEM hole there already, just use that as a pilot.

It works to some degree otherwise i wouldn't suggest it

BenR 01-09-2011 11:41 AM

Well it looks like it starts slipping towards the end of the day still. :\

I'll have to add a clutch job to the growing list of projects on the table.

BenR 01-10-2011 05:34 PM

Anyone have a recommendation on which 4/6 puck to get and cheapest source? I would like to reuse the FM pressure plate.

I'll probably get an act 6 puck unsprung through summit if no one has any opinions.




I'd love the 949 one, but I'm not going to spend 1k+ on the clutch.

Faeflora 01-10-2011 05:41 PM

Carolina Clutch? I got my sprung ACT 6puck from there.
http://www.carolinaclutch.com

I think y8s recommended them and the guy was nice and well priced and shipped fast.

miatauser884 01-10-2011 07:20 PM


Originally Posted by Faeflora (Post 677540)
Carolina Clutch? I got my sprung ACT 6puck from there.
http://www.carolinaclutch.com

I think y8s recommended them and the guy was nice and well priced and shipped fast.

+1 Great price and fast shipping ACT 6-puck, XT pp feels great. I adjusted the pedal using the FM guidelines.

jacob300zx 01-11-2011 01:19 PM

After driving them both on the track I prefer the feel of a pucked clutch for track use. They are a little difficult in 1st and R if your not paying attention but easily overcomed if your a man. I do agree that they are harder on the drivetrain but if you use a little mechanical empithy it shouldn't be a problem. For quick snap shifts a 9lbs fly wheel from gripforce let the revs drop fast enough that it didn't feel like I was shocking the trans.

BlackBandit 01-15-2011 12:22 PM

So did you eventually get the Xtreme 6 puck sprung clutch or the Heavy Duty?

I read and looked up some prices. Don't mind the universal pictures but the serial numbers check out.

almost 50 bucks cheaper compared to Gomiata same serial number

http://www.carolinaclutch.com/ShowIt...tch%20Kit.aspx

http://www.gomiata.com/actmi6padrac1.html

Xtreme ACT clutch 6 puck sprung picture not shown but serial number clears


Cheap
http://www.autopartsdealer.com/act_x..._content=rank1

http://www.jdmhub.com/index.php?rout...1131_1132_1443

emilio700 01-16-2011 01:15 AM


Originally Posted by BenR (Post 677538)
Anyone have a recommendation on which 4/6 puck to get and cheapest source? I would like to reuse the FM pressure plate.

I'll probably get an act 6 puck unsprung through summit if no one has any opinions.




I'd love the 949 one, but I'm not going to spend 1k+ on the clutch.

Clutch and flywheel.

Savington 01-16-2011 02:35 AM


Originally Posted by emilio700 (Post 679386)
Clutch and flywheel.

+1. An extra $300 to shave fourteen pounds of rotating mass from the drivetrain sounds like money well spent to me.

hustler 01-16-2011 10:39 AM


Originally Posted by emilio700 (Post 679386)
Clutch and flywheel.

By the time you put together a clutch disc, plate, flywheel, and throw-out, you're $200-300 away from video-game style driving glory. People that haven't driven it, don't understand...it rev's like a damn SR-3. I finally drove John's car on the track with the clutch and I grinned the entire time. My tax return is supposed to go on student loans..right? God damn you 949 Racing.


Originally Posted by Savington (Post 679397)
+1. An extra $300 to shave fourteen pounds of rotating mass from the drivetrain sounds like money well spent to me.

I remember grabbing John's single disc and comparing it to the one that came out of his car, and the suspended disbelief that followed.

Faeflora 01-16-2011 11:32 AM


Originally Posted by Savington (Post 679397)
+1. An extra $300 to shave fourteen pounds of rotating mass from the drivetrain sounds like money well spent to me.

Why is it ok to take mass off the rear of the crankshaft but not the front via a lightweight pully?

Is there some "happy rotating mass on the end of the crankshaft threshold"??

hustler 01-16-2011 11:37 AM


Originally Posted by Faeflora (Post 679448)
Why is it ok to take mass off the rear of the crankshaft but not the front via a lightweight pully?

Is there some "happy rotating mass on the end of the crankshaft threshold"??

How much does the pulley on the front weigh?

Faeflora 01-16-2011 11:49 AM

Less than 9lbs or whatever a lightweight flywheel weighs. 3lbs?

y8s 01-16-2011 12:14 PM

I'll sell my old twin plate setup to you cheap. needs new disks and floaters. total weight is like 16 lbs including the flywheel.

Savington 01-16-2011 01:49 PM


Originally Posted by Faeflora (Post 679448)
Why is it ok to take mass off the rear of the crankshaft but not the front via a lightweight pully?

Is there some "happy rotating mass on the end of the crankshaft threshold"??

Because the pulley dampens vibration and a single-mass flywheel (basically) doesn't. It's fine to put a lightweight pulley on, as long as it sufficiently dampens the vibration coming from the motor. It's not the weight loss that causes issues from LW pulleys, it's the fact that you've removed the harmonic damper.

Faeflora 01-16-2011 02:22 PM

So. Why not have a dampened flywheel?

I mean, other than material/construction issues, this would be great right?

Savington 01-16-2011 02:29 PM


Originally Posted by Faeflora (Post 679502)
So. Why not have a dampened flywheel?

I mean, other than material/construction issues, this would be great right?

How much do you think that would weigh?

I'll give you a hint: The 4th gen Toyota Supra has a dual-mass dampened flywheel (the Getrag is really noisy without it, apparently). It weighs 34lbs.

hustler 01-16-2011 08:02 PM


Originally Posted by Savington (Post 679505)
How much do you think that would weigh?

I'll give you a hint: The 4th gen Toyota Supra has a dual-mass dampened flywheel (the Getrag is really noisy without it, apparently). It weighs 34lbs.

LG takes the stock 63lb ZR1 clutch down to 18lb.

BenR 01-18-2011 04:24 PM


Originally Posted by Savington (Post 679397)
+1. An extra $300 to shave fourteen pounds of rotating mass from the drivetrain sounds like money well spent to me.



From what I'm thinking it would be an extra $800+ unless someone bought my current flywheel, pp, and disk for a premium.


I'd love the 949 setup, and I know it's the best way to go. At this point I'd rather get something at a lower cost that works, and spend that cash on lower hanging fruit like an OS Giken diff, or real shocks/springs.

BlackBandit 01-18-2011 04:42 PM

You want to sell the twin disk? How come? I might be interested but I just want to hear from you your pros and cons about it.


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