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ACT Clutch and High RPM lockout issues ??

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Old Nov 11, 2005 | 07:57 AM
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ACT Clutch and High RPM lockout issues ??

Anyone who have an ACT clutch with high rpm lockout fix their problem yet? I tried adjust my clutch rod and it seemed to help but the problem still exist. This SUCKS!!! There's about 1.5 thread left on the nut side. How's this compare to everyone else?

Anyone know if I can adjust it to .5 thread or less? When will I know adjustment is too much?

Thanks.
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Old Nov 11, 2005 | 08:31 AM
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From: Long Island, NY
After I adjusted mine to the point that there were 2 threads remaining, it no longer locked me out. After 4 months or so, it still has not locked me out, and I haven't missed a single shift in 40 passes down the drag strip. I recently removed the clutch restrictor and installed a SS clutch line, which lowered my pedal engagement slightly, but I still have not been locked out. Crossing my fingers hoping it stays this way for a long time...
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Old Nov 11, 2005 | 08:41 AM
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I have teh lockout. Over 5000 rpms. It sucks. Searching for a thread on how to adjust clutch.
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Old Nov 11, 2005 | 09:03 AM
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I still have the restrictor in. This issue sucks and I think it's worst on the 03. I hope my tranny is not mess up due to this. I never had this problem with the stock clutch.
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Old Nov 12, 2005 | 08:34 AM
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I adjusted the clutch so theres 2 threads left and theres no more lockout. Sweet.
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Old Nov 12, 2005 | 09:17 AM
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From: ma
Originally Posted by twinscrewed
I adjusted the clutch so theres 2 threads left and theres no more lockout. Sweet.
same here, has been running great ever since
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Old Nov 14, 2005 | 06:54 PM
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I just adjusted the rod to have about 1 thread left. I don't know if it's me, my transmission is mess up, or what. How do you guys shift with the ACT clutch?

I can't quick shift at all and this is where I'm losing the times . It's either miss shift or it won't go in cleanly! My best time 1/4 time was 12.19. Best trap was 114 and best 60ft time was 1.692. With a good launch and shifting I'm sure this thing can hit 11. Mods are BR S4 with alky kit at 25 psi with pump gas. Ran it like I was driving daily with no weight removal, 30 psi all around on ASX tires, etc.
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Old Nov 14, 2005 | 07:08 PM
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I am sorry you are still having troubles. If it is happening in all gears then it is more likely to be clutch system related. If it is only happening in one or two gears only then I would by suspicious of the transmission. Does it only happen at high rpms or all the time? Keep me posted. I would like to know what is going on.
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Old Nov 14, 2005 | 07:22 PM
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Originally Posted by ACTman
I am sorry you are still having troubles. If it is happening in all gears then it is more likely to be clutch system related. If it is only happening in one or two gears only then I would by suspicious of the transmission. Does it only happen at high rpms or all the time? Keep me posted. I would like to know what is going on.

Thanks for chiming in. It only happens at high rpm during shifting. Under normal driving it shifts fine. The pedal engagement seems to become higher and higher now

I try to shift early going from first to second so it seems to help but second to third is a bit**. This is where I shift at 7300-7500. If I slow down the shift it seems to help but I can't quick shift (not powershift) . I'm going to try removing the restrictor to see if it helps. It's not going to happen until Spring though

It could be the my shifting, the transmission, clutch, or synchros but not sure. Either I get the POS tranny rebuilt or maybe trade this sucker in for a minivan

Either case it's $$$$$$$$$ out
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Old Nov 14, 2005 | 08:09 PM
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From: lancaster, ca
Originally Posted by GOKOU
Thanks for chiming in. It only happens at high rpm during shifting. Under normal driving it shifts fine. The pedal engagement seems to become higher and higher now

I try to shift early going from first to second so it seems to help but second to third is a bit**. This is where I shift at 7300-7500. If I slow down the shift it seems to help but I can't quick shift (not powershift) . I'm going to try removing the restrictor to see if it helps. It's not going to happen until Spring though

It could be the my shifting, the transmission, clutch, or synchros but not sure. Either I get the POS tranny rebuilt or maybe trade this sucker in for a minivan

Either case it's $$$$$$$$$ out
If the engagement is getting higher, make sure you didn't adjust it too far and possibly preload the hydraulics. If it is preloaded and still locking you out, I sure would like to see that clutch and flywheel. We can easily test to see if they are functioning properly and how much travel it takes to operate. Honestly, if it is adjusted that extreme, it doesn't sound like trans. to me, but contact Jon at TRE or John Shepherd to see what they say.

The dynamics at high rpm are a bit different. I am sure you read the page I put together on the subject of lockout. At high rpm the clutch requires more air gap (higher adjustment) than at lower rpms. Also the syncros will not work as good, and the type or viscosity of the oil has more affect.

The restrictor should not matter at all, but it won't hurt either.
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Old Nov 14, 2005 | 10:10 PM
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From: dartmouth
its interesting that u say the restrictor doesnt matter, but so many swear by it when they go for installs. i thought the restrictor slowed fluid from the pedal to the tranny so removing it would help!
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Old Nov 14, 2005 | 11:07 PM
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From: lancaster, ca
Originally Posted by bacalhau16
its interesting that u say the restrictor doesnt matter, but so many swear by it when they go for installs. i thought the restrictor slowed fluid from the pedal to the tranny so removing it would help!
It actually slows the fluid from the tranny to the pedal, so it shouldn't have any affect on lockout. It affects engagement, not disengagement.
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Old Nov 15, 2005 | 12:18 AM
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Originally Posted by ACTman
It actually slows the fluid from the tranny to the pedal, so it shouldn't have any affect on lockout. It affects engagement, not disengagement.
I agree with you 100%. The one thing about the restrictor is, it masks true clutch feel for normal driving and I think people tend to ride the clutch for lack of engagement point feel. I think this ultimately is causing more damage to many clutches.
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Old Nov 15, 2005 | 05:30 AM
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Dirk,

Any way to test whether I adjusted it too much? I have 3-5 months to debate about removing the restrictor

Thanks.
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Old Nov 15, 2005 | 06:13 AM
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From: Lafayette, LA (Da Bayou)
I have been fighting the lock out big time.

My mods:
ACT Clutch
Fidonza Alu fly wheel
Royal Purple 85-90 gear oil. (may be 80-90)
SS clutch line
Restrictor removed
Clutch rod - not adjusted
Clutch pedal - not adjusted
Brass shifter bushings (engine and inside)
Short throw shifter


I always get locked out above 6K rpm. I am going to try and adjust the rod on the tranny. I will let you guys know what I find. I cant run faster than 12.7 / 115 due to the loss of momentum during my looooooong shifts.

I H A T E T H E L O C K - O U T ! ! !


I hope this helps. I was about to get a Exedy twin to help fix it too. This might keep me going with ACT.
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