I'm slipping my ACT clutch (HD pressure plate and full face organic disk, rated for 245ft/lb and 13lb flywheel)

I need something that will hold more power BUT I really dont want a super heavy pedal. I'm a chick so I'm not really strong and a heavy clutch pedal is difficult for me to drive with for more than a short time. I do street the car but I take it either drifting, auto-x'ing or OTD almost every weekend now so it gets beat on a LOT.. especially when drifting.

I'm making 250wtq and 280whp currently, but after I get a clutch I'm going to turn up the boost for 300wtq and 330-350whp give or take.

So my question is, is there any combo I can come up with that will hold around 330wtq to be safe, that wont be super heavy? And no, I can't afford a twin disc. I was thinking ACT sprung 6 puck with a flyin miata level 1 pressure plate? Idk if those would fit together/work etc.

Any advice would help! (yes i have googled and searched threads here but a heavy pedal doesnt seem to be a big problem to you guys like it is for me!)

 

FM2 or 949.

 

FM2

 

I called flyin miata a few weeks ago and talked to them about the level one and two, they said the FM2 has a very strong/hard to push pressure plate and he recommended the lv1 to me but I don't think that's going to hold up.

 

Centerforce twin disk...no *****.

 

You are not going to find a clutch with a light pedal feel that will hold that much torque.

 

guyyyysssss FM2 is too heavy and I cant afford a twin disc. gotta get creative here

 

​​​​​​​Look at my post right above yours. It has the answer. Either turn down boost, or live with the heavy pedal.

 

aw man :(

 

drive a mustang, then call the FM2 heavy...

actually, drive a miata with the ACT XD, then call the FM2 heavy...

 

I had one of those dual friction ones in my miata... it didn't hold well.

 

There's not much creativity to be had, only physics. Your clutch rating is based on coefficient, clamp load, effective radius, and number of friction surfaces. Aggressive coefficient means bad for the street and also expensive. Effective radius can't be changed due to bell housing constraints. Clamp load makes the pedal heavier. Number of friction surfaces is the ticket, aka 949 twin disk.

I'm actually curious just how heavy the FM2 is. The FM1 made my clutch pedal softer than stock. Maybe see if you can drive someone's turbo car in the area to see if the clutch pedal is livable? I feel like Dillon (Erat) has an FM2, but I'm not totally sure.

 

 

this makes sense, thanks for learnin me. I see you're from farmington hills MI, I'm in Rochester! (I work in warren so thats a little closer)... do you have a FM2?

 

I can guarantee you won't want to try my clutch.

 

I don't have a way to measure how stiff mine is, but I can say that the FM2 is far stiffer then the FM1. I honestly have to say it is stiffer then the clutch in my 7.3L power stroke.

 

yikes!!!! does anyone know around how much poundage it takes to depress a FM2? 949 says OEM is around 20lbs to push, and their super miata sport clutch is around 35 lbs to push. I can't find any rating on the FM2 but that would be a big deciding factor.

 

Some data from Keith (at FM) here.
FM1 18lbf
stock 96 22lbf
stock msm 25lbf
FM2 26lbf

Data is old but seems close to consistent with

 

I daily my NA with the FM2 clutch. It's not bad at all, will feel like stock after two or three days. Only time I notice how heavy it is, is when I jump in my stock clutch 95 and smash the clutch to the floor the first few times lol.

 

I blew the springs out of my FM2 friction disc with just hard street driving... I wouldn't use it on a drift car. I Currently have an FM2 Pressure plate with a 6 puck competition clutch friction disc that seems to be holding up well. As others have stated the pedal on the FM2 is far harder than stock but still manageable in my opinion. Also for what its worth, Competition Clutches makes the flying miata clutches. You may be able to go with the FM1 Pressure plate and use one of the various friction discs they offer to get it to hold the power you want.
-Mike