Do you drive an Exedy Stg. 2 Clutch? Come in and share your experience.

[Fastbrz]

I currently have a competition stage 3 clutch. I should mention I have never had a problem of being in a gear but switching gears was more difficult going in or took more time but I never had it not go into another gear.

[jher]

Originally Posted by Sportsguy83

The tolerance between the input shaft and the hub of the clutch disk is what I'm talking about.

Let me ask you, if it's not dust or tolerances, what do you think it is?

Because the other thing that can make a clutch drag is a bad pressure plate.

Again, consider this is not 1 or 2 random people with issues, this is "I know more than 10 people with the same clutch (between forum and locals) and all of them have the issue at some point".

I just got my clutch installed so if you can't get it to go into 1st gear you used the 2nd gear to drive? Or your still able to get it into 1st some how. Just want to know so when I come across it I'll know what to expect.

[Ross]

I have a customer with the same issue. we have done the remove, clean, lube per Exedy's directions, and reinstalled. When this ultimately did not resolve the issue, I removed the clutch and have sense installed a factory unit for the time being. While I had it out and had several other frs clutches available to me to inspect it against I found that the hub used on the Exedy stage 2 measures smaller then factory (which is made by Exedy but is a different hub), ACT, and CM. What I am assuming is that the difference in this hub size is what is causing the issue. As I have installed several different clutches in these cars now and this is the only one I have had any issues with. When every thing is finalized I will report back more about what I find.

[Hempo]

I have the Stg 2 aswell.

Not so many miles on it, approx 400 just..

Didn't care about breaking the clutch in.

No issues at all, very satisfied with the clutch so far

[Sportsguy83]

Originally Posted by jher

I just got my clutch installed so if you can't get it to go into 1st gear you used the 2nd gear to drive? Or your still able to get it into 1st some how. Just want to know so when I come across it I'll know what to expect.

Either keep trying getting into other gears and getting into first, or turn off car, put it in first and start it up

Originally Posted by Ross

I have a customer with the same issue. we have done the remove, clean, lube per Exedy's directions, and reinstalled. When this ultimately did not resolve the issue, I removed the clutch and have sense installed a factory unit for the time being. While I had it out and had several other frs clutches available to me to inspect it against I found that the hub used on the Exedy stage 2 measures smaller then factory (which is made by Exedy but is a different hub), ACT, and CM. What I am assuming is that the difference in this hub size is what is causing the issue. As I have installed several different clutches in these cars now and this is the only one I have had any issues with. When every thing is finalized I will report back more about what I find.

@Shady195 this is why tolerances is a possibility.

@marcoaferrer @alpine

Thanks Ross!!

[FrX]

I have the same issue on Exedy's Stage 1 clutch. It seems to get worse as the motor and gearbox heat up.

[alpine]

Originally Posted by FrX

I have the same issue on Exedy's Stage 1 clutch. It seems to get worse as the motor and gearbox heat up.

yup

[F1point4]

I don't have an Exedy, but i get 1st/reverse lockout with my ACT clutch SB7-HDSS. Bled fluid, adjusted pedal, messed with the reverse lockout. helps but doesn't completely get rid of it.

I notice if i press the pedal with more the toes/top half of the ball of my foot in addition to pausing before sliding the lever into gear I get more success.

Things I haven't tried...full flush of fluid. Installing a brand new slave cylinder I have laying around.

[AndresFRS]

I have done many clutches on FR-S/BRZ and the only ones I have issues with is exedy, one of my customers had one installed by another shop and had the issue so he ordered a new one and after I installed it he started having the same issue after the break in period so we took the tranny out again and re grease it again and he is staring to have the issue again (that's 2 of the same clutch "exedy satge 2") plus @Sportsguy83's car

[RallySTI]

Thank you for the feedback of our products. I just went out and measured 5 random BRZ/FRS stage 2 clutch disc splines. First I tested against a Subaru spline guage. All five fit fine without issue and moved freely back and forth. I measure the major and minor spline diameter. The major diameter measured 25.2-25.8mm on all five samples. The blueprints state the majr diameter is 25.2mm +0.13mm/-0.00mm. The minor diameter measured 22.64-22.71mm. The blueprint states the minor diameter as 26.2mm +0.13mm/-0.00mm.

The BRZ/FR-S use the same Subaru spline as Impreza/Forester/Legacy etc. We are the OEM supplier to Subaru/Scion for the BRZ/FR-S. The same broach is used to cut the splines for all models, both OEM and aftermarket.

With most of these issues occuring after warm up it sounds like an issue with the hydraulic system. The clutch that comes OEM is VERY weak. The OEM clamp load when new is 1046lbs (4650N). The stage 1 and stage 2 clutch clamp load when new is 1652lbs (7350N). This is a 63% increase in clamp load over OEM. Most the time we try to keep the increase at no more than 30%. We do have this option as well part number TK07H and TK07T (clamp load is 1349lb). These are for the OEM flywheel and these kits are sold as cover/disc only (no bearings). However do not attempt to use on a boosted application as the wheel torque capacity assuming 20% driveline loss on stage 1 is 166ft/lbs (259ft/lbs clutch torque) and stage 2 is 199ft/lbs(311ft/lbs clutch torque).

Has anybody upgraded their OEM hydraulic system? Has anybody had Issues with Clutch Master, ACT, SPEC or Competition Clutch?

Appreciate the feedback.

Evan Cline @ Exedy

[Ross]

Evan, I found measuring your oe disk to have a larger amount of clearance then I did with your stage 2 disk. As well I found ACT and Clutch Masters disks to be much closer to the factory disk then your stage 2 disk. As well Your plate pressure feels much lighter then the other clutches I have installed, clutch hydraulics I do not feel comes into play. The exedy staged clutches are the only clutch I have had this issue with, I have installed multiple clutch kits on this platform. I will say I have not installed spec, and we do not support comp clutches.

Unfortunately, for me at least, it seems to surround the kit it self. I wish this was not the case as I initially really liked the pedal effort and the way the kit grabbed. I also prefer getting parts from oe suppliers as they typically have better quality behind them. But if I supply a part, I stand behind it, and I have now had the transmission out of one car a minimum 3 times with this clutch kit. This is the only one out of the other manufactures we have installed that has this issue. That cost me time that could have been spent working on another car. Either way it is on the way back for inspection, and I will have this transmission out of this car for the fourth time after that is resolved.

[jher]

Has anyone change out their stock clutch line to aftermarket SS braided one? Just wondering if that would help a little.


Thinking about changing mine out.

[Xerious]

Originally Posted by jher

Has anyone change out their stock clutch line to aftermarket SS braided one? Just wondering if that would help a little.


Thinking about changing mine out.

Are you running into the issues mentioned here or is this preventative.

[midnight23]

Originally Posted by FrX

I have the same issue on Exedy's Stage 1 clutch. It seems to get worse as the motor and gearbox heat up.

Mine is opposite. It only does it while warming up. Once up to temp it seems to be okay.