2nd Generation Specific (1986-1992) 1986-1992 Discussion including performance modifications and technical support sections.

Clutch not "slipping", but CHATTERING fully engaged in boost.

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Old Apr 3, 2015 | 09:53 AM
  #26  
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From: Long Beach
Originally Posted by sp0ngebob
could be clutch "pump up"

does it happen immediately with everything over-night cold or does it kind of come with warming up?

had this on my old FC. If you pull "up" on the clutch pedal really hard it would release the trapped fluid and stop slipping. mine would also feel like the engagement point was kinda moving slowly upwards
No, it sorta just happens all the time under load. Master and slave are new too :/
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Old Apr 4, 2015 | 06:29 AM
  #27  
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From: And the horse he rode in on...
Originally Posted by beachFC
No, it sorta just happens all the time under load. Master and slave are new too :/
Did you or did you not resurface the flywheel when you installed the new clutch?
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Old Apr 6, 2015 | 12:28 PM
  #28  
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From: Long Beach
Originally Posted by jackhild59
Did you or did you not resurface the flywheel when you installed the new clutch?
yep
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Old Apr 6, 2015 | 03:19 PM
  #29  
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Did you break in the clutch properly?
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Old Apr 7, 2015 | 04:05 PM
  #30  
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Originally Posted by beachFC
No, it sorta just happens all the time under load. Master and slave are new too :/
pump up has to do with adjustment not "new or old" brand new master could have that issue too.


but if it doesnt get worse as the drive goes on, then its not pump up.
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Old Apr 7, 2015 | 07:27 PM
  #31  
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Somebody didn't do their homework when machining the flywheel? Sticking it to a magnet without stoning the back will make it runout. I've seen a lot of flywheels with pretty good sized burrs at the threaded holes that go through the fly wheel. Best way is to support on the crank flange.
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Old Apr 8, 2015 | 01:14 PM
  #32  
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From: Long Beach
Originally Posted by monty11ez
Did you break in the clutch properly?
It's a 6 puck clutch, break in takes all of 5-6 clutch dumps haha. But it also has around 100 traffic miles on it. This is not my issue.

Originally Posted by sp0ngebob
pump up has to do with adjustment not "new or old" brand new master could have that issue too.


but if it doesnt get worse as the drive goes on, then its not pump up.
Not worse, it's pretty consistent. It's also not a regular slip either. It slips, and chatters.

Originally Posted by TonyD89
Somebody didn't do their homework when machining the flywheel? Sticking it to a magnet without stoning the back will make it runout. I've seen a lot of flywheels with pretty good sized burrs at the threaded holes that go through the fly wheel. Best way is to support on the crank flange.
This also can't be the issue it has been taken to the same, very reputable shop.
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Old Apr 8, 2015 | 05:11 PM
  #33  
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Originally Posted by beachFC
No, it sorta just happens all the time under load. Master and slave are new too :/
Originally Posted by beachFC
It's the same set up that I've always had. Never gave me issues before this
So which one is it? Just check that the clutch slave isn't pushing against the fork at rest and screwing up the clamping force.

At this point, you've replaced everything clutch-related and supposedly done correctly.

The only other thing that I could see being related to power is your fancy rear diff.
Alternatively, the suspension may not be moving correctly as you accelerate.
Do you have the solid rear control arm bushings and camber adjusting parts? If so, the suspension could be binding and it's acting like a go-kart.
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Old Apr 8, 2015 | 06:14 PM
  #34  
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From: Long Beach
Originally Posted by RXSpeed16
So which one is it? Just check that the clutch slave isn't pushing against the fork at rest and screwing up the clamping force.

At this point, you've replaced everything clutch-related and supposedly done correctly.

The only other thing that I could see being related to power is your fancy rear diff.
Alternatively, the suspension may not be moving correctly as you accelerate.
Do you have the solid rear control arm bushings and camber adjusting parts? If so, the suspension could be binding and it's acting like a go-kart.
Master, and slave were replaced a little over a year ago. Never gave me issues.

Same set up = 6 puck, flywheel etc.

The clutch is slipping, suspension/diff literally have nothing to do with the issue.
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