PSA: ACT vs EXEDY street clutches - Page 7 - Toyota GR86, 86, FR-S and Subaru BRZ Forum & Owners Community

mike the snake · 04-24-2014, 10:09 PM

Any stronger aftermarket pressure plate will put extra loads on the crank bearings.

One thing we can do to help lower any possible crank walking is to use the clutch as little as possible, namely, don't sit at stop lights, in-gear, with the clutch pushed in for extended periods.

mike the snake · 04-25-2014, 08:35 PM

I have a feeling that a lot of the issues people are having with trouble getting into 1st are mainly due to the clutch adjustment.

I think the dimensions might be slightly different, and when the ACT clutch is installed, it needs to be adjusted to engage further from the floor.

Mine is new, and my shop installed it, but didn't adjust anything, and the clutch began grabbing juuust off the floor. One hair lower and it would have shown the same signs of hard engaging gears.

My clutch was adjusted today, and it now engages normally.

Dustin · 04-26-2014, 10:53 PM

I installed mine today and have 2 issues. The clutch seems to be engaging at the very end of the stroke. Same characteristics as @mike the snake. Looks like an adjustment is needed. Also, when idling, if the clutch is engaged everything is fine. But if I'm in neutral and take my foot off the clutch there is a rattleing noise. I'll have to check on it to see if there as anything I installed incorrectly. Pretty sure I didn't but there's always that chance.

kiichiro · 04-27-2014, 03:41 AM

Quote:

Originally Posted by King Tut

How many of you guys with issues with your ACT have modified your clutch grab adjustment or hydraulics? I never modified either.

Modded and happy

mike the snake · 04-27-2014, 09:21 AM

A lot of aftermarket clutches will chatter when in neutral. Do a search, you'll find many reports of noise. It's fairly normal.

Quote:

Originally Posted by Dustin

I installed mine today and have 2 issues. The clutch seems to be engaging at the very end of the stroke. Same characteristics as @mike the snake. Looks like an adjustment is needed. Also, when idling, if the clutch is engaged everything is fine. But if I'm in neutral and take my foot off the clutch there is a rattleing noise. I'll have to check on it to see if there as anything I installed incorrectly. Pretty sure I didn't but there's always that chance.

Dustin · 04-27-2014, 11:06 AM

I've read about the chatter before. This one just seems excessive although I've never heard the chatter personally so maybe it is the norm. I wasn't asking for anyone to diagnose my problem just giving my feedback on the ACT clutch. Thank you though for trying to help. I still plan on checking it out. I'd rather double check and it be the normal chatter than not check and it be something else.

King Tut · 04-27-2014, 05:30 PM

Quote:

Originally Posted by Dustin

But if I'm in neutral and take my foot off the clutch there is a rattleing noise. I'll have to check on it to see if there as anything I installed incorrectly. Pretty sure I didn't but there's always that chance.

Normal, although mine only did it with the A/C on.

Pneub · 04-27-2014, 08:42 PM

Quote:

Originally Posted by King Tut

Normal, although mine only did it with the A/C on.

Mine as well

Sportsguy83 · 05-05-2014, 09:46 AM

Wasn't it in this thread people had spoken about having trouble getting into gears after their ACT clutch warmed up??

I've been having a little bit of problems with it when warmed up, and I'm fearing its the TOB.....

mike the snake · 05-05-2014, 10:11 AM

Mine was close to not fully disengaging, but I adjusted the clutch tighter and it works perfectly now.

I've had TOB's go bad, usually, they die quickly once they start to go.

Any noise or grumbling when you push the clutch pedal?

Sportsguy83 · 05-05-2014, 11:10 AM

Quote:

Originally Posted by mike the snake

Mine was close to not fully disengaging, but I adjusted the clutch tighter and it works perfectly now.

I've had TOB's go bad, usually, they die quickly once they start to go.

Any noise or grumbling when you push the clutch pedal?

Yes, I'm getting the creaking noise with the pedal

w00t692 · 05-05-2014, 11:14 AM

Whatever you do, don't preload the clutch pedal. There's a bypass valve built into the master cylinder that releases pedal pressure. If you adjust too much and there's no freeplay in the pedal you will get "pedal pump up" which is where it doesn't allow the pressure to subside, resulting in a clutch that's basically halfway depressed ALL THE TIME.

The way to check is to make sure the slave cylinder can be depressed when your clutch pedal is at resting state.

Sportsguy83 · 05-05-2014, 11:34 AM

Quote:

Originally Posted by w00t692

Whatever you do, don't preload the clutch pedal. There's a bypass valve built into the master cylinder that releases pedal pressure. If you adjust too much and there's no freeplay in the pedal you will get "pedal pump up" which is where it doesn't allow the pressure to subside, resulting in a clutch that's basically halfway depressed ALL THE TIME.

The way to check is to make sure the slave cylinder can be depressed when your clutch pedal is at resting state.

And this happens when you adjust the clutch to grab really low correct?

enjoyminutemaid · 05-05-2014, 11:48 AM

Quote:

Originally Posted by w00t692

The way to check is to make sure the slave cylinder can be depressed when your clutch pedal is at resting state.

How is this done?

04-26-2014, 10:53 PM	#87
Dustin Twin Screw You Join Date: Nov 2012 Drives: 2013 Supercharged Whiteout FR-S Location: Burleson, Texas Posts: 1,231 Thanks: 464 Thanked 620 Times in 332 Posts Mentioned: 37 Post(s) Tagged: 0 Thread(s)	I installed mine today and have 2 issues. The clutch seems to be engaging at the very end of the stroke. Same characteristics as @mike the snake. Looks like an adjustment is needed. Also, when idling, if the clutch is engaged everything is fine. But if I'm in neutral and take my foot off the clutch there is a rattleing noise. I'll have to check on it to see if there as anything I installed incorrectly. Pretty sure I didn't but there's always that chance. __________________ My 86 Differential and Ring & Pinion DIY

04-27-2014, 11:06 AM	#90
Dustin Twin Screw You Join Date: Nov 2012 Drives: 2013 Supercharged Whiteout FR-S Location: Burleson, Texas Posts: 1,231 Thanks: 464 Thanked 620 Times in 332 Posts Mentioned: 37 Post(s) Tagged: 0 Thread(s)	I've read about the chatter before. This one just seems excessive although I've never heard the chatter personally so maybe it is the norm. I wasn't asking for anyone to diagnose my problem just giving my feedback on the ACT clutch. Thank you though for trying to help. I still plan on checking it out. I'd rather double check and it be the normal chatter than not check and it be something else. __________________ My 86 Differential and Ring & Pinion DIY

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04-24-2014, 10:09 PM	#85
mike the snake Senior Member Join Date: Jul 2013 Drives: 2013 BRZ Location: Norcal Posts: 1,592 Thanks: 1 Thanked 623 Times in 378 Posts Mentioned: 15 Post(s) Tagged: 0 Thread(s)	Any stronger aftermarket pressure plate will put extra loads on the crank bearings. One thing we can do to help lower any possible crank walking is to use the clutch as little as possible, namely, don't sit at stop lights, in-gear, with the clutch pushed in for extended periods.

04-25-2014, 08:35 PM	#86
mike the snake Senior Member Join Date: Jul 2013 Drives: 2013 BRZ Location: Norcal Posts: 1,592 Thanks: 1 Thanked 623 Times in 378 Posts Mentioned: 15 Post(s) Tagged: 0 Thread(s)	I have a feeling that a lot of the issues people are having with trouble getting into 1st are mainly due to the clutch adjustment. I think the dimensions might be slightly different, and when the ACT clutch is installed, it needs to be adjusted to engage further from the floor. Mine is new, and my shop installed it, but didn't adjust anything, and the clutch began grabbing juuust off the floor. One hair lower and it would have shown the same signs of hard engaging gears. My clutch was adjusted today, and it now engages normally.

05-05-2014, 10:11 AM	#94
mike the snake Senior Member Join Date: Jul 2013 Drives: 2013 BRZ Location: Norcal Posts: 1,592 Thanks: 1 Thanked 623 Times in 378 Posts Mentioned: 15 Post(s) Tagged: 0 Thread(s)	Mine was close to not fully disengaging, but I adjusted the clutch tighter and it works perfectly now. I've had TOB's go bad, usually, they die quickly once they start to go. Any noise or grumbling when you push the clutch pedal?

05-05-2014, 11:14 AM	#96
w00t692 Senior Member Join Date: Oct 2013 Drives: 2008 Civic Si Location: United States Posts: 111 Thanks: 7 Thanked 29 Times in 24 Posts Mentioned: 0 Post(s) Tagged: 0 Thread(s)	Whatever you do, don't preload the clutch pedal. There's a bypass valve built into the master cylinder that releases pedal pressure. If you adjust too much and there's no freeplay in the pedal you will get "pedal pump up" which is where it doesn't allow the pressure to subside, resulting in a clutch that's basically halfway depressed ALL THE TIME. The way to check is to make sure the slave cylinder can be depressed when your clutch pedal is at resting state.

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