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View Full Version : Clutchmasters FX400, how do you guys like it?



$teady$upreme
06-11-2013, 11:54 AM
I assume lots of us be running the Clutchmasters FX400 or FX300, how do you guys like them?

What's the difference between 6 or 8 pads?

Anyone running clutchmasters with Fidanza flywheel?

v8a6
06-11-2013, 12:26 PM
I love mine, but my wife HATES it (even as just a passenger). If you have a powerful car, the clutch really grabs and transfers the power well. However, passengers find it engages harshly (screw them, LOL). My car has about 300 tq to the wheels, and I can dump the clutch as 5000rpm without even a whimper, time and time again.

Pedal force is amazingly light. I find other clutches bother my knee, but not this one. Engagement is very high. Once you get used to it, you can powershift by giving the clutch pedal a quick stab, instead of having to go all the way to the floor.

For the smoothest shifts during daily driving, I found you have to practice this technique: push the pedal in quick to disengage, and let it out a bit slower, to smoothly re engage. I drive mine daily without any issues, with a lightweight flywheel in city traffic.

Your passengers may hate it, but you will love it. If you want something super smooth, then look elsewhere.

I have the sprung 6-puck, btw. And yes, I run it with the Fidanza aluminum flywheel. Great combo, but takes a little practice to get used to.

$teady$upreme
06-11-2013, 12:43 PM
Very good review indeed. What's the difference between a 6 and 8 pucks? Which will last longer? And are there any performance difference?

I have a gt28rs "disco potato" with full supporting mods, 6 or 8pucks would you recommend?

Coming from a southbend stage 4, I am sure anything will drive better.

demonmk2
06-11-2013, 02:23 PM
^^ I have the 6 puck and it holds up and then some to my gt28rs

revolution337
06-11-2013, 02:56 PM
I have the 6 puck FX400 and I love it. Very OEM pedal feel, and it has no problem handling the torque of my V8 :)

viceprp
06-11-2013, 02:57 PM
It's great. Get it. /thread

nynoah
06-11-2013, 03:11 PM
I have an FX300 with the 14 lb flywheel. You can pick that up from Ringer Racing for a good deal. I have no complaints about it. Holds power perfectly and engagement while not totally like stock is tolerable. I would not go with a lighter flywheel than the steel on that Ringer uses in their combos. If I went with an FX400, I would get the 8 puck not the 6. It will hold the same power and engage smoother. Heck I am not even sure if the FX300 that I have is what is called the 8 puck FX400. Because mine has the "fiber tough material" which was an upgrade on the regular FX300 at the time. If that is the case, have no fear, its a great clutch.

biketsai
06-11-2013, 03:11 PM
^^^ X2

I have the FX400 with the 8 puck. Very smooth to drive, feels OEM except for the high engagement, which I'd rather have anyways. I also have the LWFW and don't really have any chatter.

sweets4style
06-11-2013, 03:42 PM
The 8 puck and 6 puck are both great. But highly do not recomend running them with a lightweight aluminum flywheel.Nothing wrong with a lightweight steel flywheel but you need the extra inertia. If you run stock or single mass flywheel it will drive just like stock. If you run an aluminum flywheel you need a full face clutch for it to not drop revs quickly and make it difficult to drive from stops.

spindoctor
06-11-2013, 04:21 PM
Something in between the FX300 and FX400 ie the FX350 is damn good clutch IMO.

A friend of mine has a built S3 8L 1.8TQ, GT2871R, 27psi etc and the FX350 feels almost stock(smooth) when changing gears. Only difference is when taking off, it bites harder but not a big deal.

Will definitely run the FX350(240mm) after my engine is fully built.

RENOxDECEPTION
06-11-2013, 04:53 PM
I have an fx400 6 puck 240mm (i upgraded from 224mm) with an ECS Lightweight steel 240mm flywheel, love it, I try to match my transmission speed with my engine rev's to go easy on it and smooth out my shifts for passengers. Sometimes when giving too much gas in first from a stop I get bad chatter, but 99% of my starts are smooth as hell. As the first response said, once you learn to drive it, it's great. If my clutch ever dies again, I will get another fx400.

Seerlah
06-11-2013, 04:54 PM
CM FX400 228mm 6 puck sprung hub with CM steel LWFW here. Great clutch.

$teady$upreme
06-11-2013, 06:06 PM
thanks guys.

Ordered CM FX400 8 pucks and inserts for my Fidanza flywheel.

c0r3y.af
06-12-2013, 06:17 AM
FX100 240mm here with a RA4 flywheel. I love it.

mykeg6
06-12-2013, 06:34 AM
I run a 228mm FX400.

If I need a new clutch I would probably try a 240mm FX450. :)

Urtorsen
06-12-2013, 07:10 AM
Daily driving with a 228 fx400 6 puck sprung, steel CM lwfw .....nothing wrong with it at all

M-Hood
06-12-2013, 07:14 AM
thanks guys.

Ordered CM FX400 8 pucks and inserts for my Fidanza flywheel.

No such thing as a 8 puck FX400, there is a 8 PAD though. [:p]

The FX400 CL and FX350 FF are full face disks with 8-9 pads of material on them.


The FX850 uses a 8 puck design disk.
http://px6.streetfire.net/0002/33/23/2053332_600.jpg

vividracing
06-12-2013, 12:56 PM
If you need one send me a pm and i can get you a killer deal:)

Thanks
John G

GOODBYNAAIR
06-12-2013, 01:52 PM
Any input on the fx400 6 puck 240mm + steel flywheel I have it sitting in my room next to my GTRS. Waiting to pull my motor[:D]

winston@podi.ca
06-12-2013, 02:00 PM
Any input on the fx400 6 puck 240mm + steel flywheel I have it sitting in my room next to my GTRS. Waiting to pull my motor[:D]

Mike recommended this setup for my build and it was great.

Took a bit to get used to the engagement, but after that it was easy to drive. I like the pedal feel a lot better than the SB clutch I had before.

GOODBYNAAIR
06-12-2013, 02:07 PM
I also talked to him (Mike) when I picked up the clutch and he recommended it to me as well.

thanks can wait to get it all in.

GOODBYNAAIR
08-24-2013, 02:37 PM
are the torque spec for the MC fx 400 240mm the same as stock?

dmaxn
08-24-2013, 02:46 PM
CM FX400 with LWFW. Took about a week or two to get use to the way it engages.

RENOxDECEPTION
08-24-2013, 03:00 PM
are the torque spec for the MC fx 400 240mm the same as stock?

That's what I went with, torque specs from audi, I also used thread locker red.

ToXicXxX
08-24-2013, 03:10 PM
I absolutely love mine. Little rough in traffic, but it grabs. And the takeoffs are amazing!

I torqued my 240mm 6 puck to 85 ft lbs with blue locktite.

GOODBYNAAIR
08-24-2013, 05:32 PM
Thanks but the motor and trans are in the car lol. I did 44lb + 90 deg turn (red thread locker) what the books says for the LWFW. I did star pattern and 15lbs for the pressure plate. I did not put my 3 lower trans bolts in [evilsmile] thanks again

Seerlah
08-24-2013, 11:56 PM
The torque specs for my flywheel were different than factory. Could not even use factory bolts but had to use CM ones that came with the flywheel. Can't remember the torque spec but i called Mike Hood when I was installing it and he told me specs.

M-Hood
08-25-2013, 07:43 AM
Thanks but the motor and trans are in the car lol. I did 44lb + 90 deg turn (red thread locker) what the books says for the LWFW. I did star pattern and 15lbs for the pressure plate. I did not put my 3 lower trans bolts in [evilsmile] thanks again

Those are the correct torque specs for the OEM flywheel bolts only, the aftermarket bolts like the 10.9 bolts and the ARP bolts are 85 ft lbs by going 45, 65 and then 85 ft lbs. Loctite should always be used on all of the bolts.


So as long as your 44lbs + 90 deg turn torqued the bolts to 85 ft lbs or more then you will be fine. Anything less and the bolts might end up backing out.

GOODBYNAAIR
08-25-2013, 01:12 PM
ok Cool Mike, yeah I used the ARP bolts started by getting them all snug and than 44 lb and than 90 deg turn all in a star pattern.

Seerlah
08-25-2013, 01:17 PM
Might want to set your torque wrench to 85 ft/lbs and see if it clicks.

GOODBYNAAIR
08-25-2013, 03:59 PM
hmm yeah its already in the car but It was a heavy 90 deg turn do to it being CM and ARP I felt like a little bit extra would be ok .

Seerlah
08-25-2013, 04:24 PM
Thread Jack/

So, when you going to start the car then?

/Thread Jack

GOODBYNAAIR
08-25-2013, 06:13 PM
Thread Jack/

So, when you going to start the car then?

/Thread Jack

I just have some wiring/ evething to re connected and Dave is sending me my base map prob tomorrow or tues so I think this week and at the latest this weekend.