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What could cause increased clutch presure with increased speed??

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Old 07-23-2008, 07:56 PM
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Default What could cause increased clutch presure with increased speed??

I was driving my LSX rx7 today and i noticed that once i got past 100mph my clutch was a lot harder to push in. What could cause this increase in pedal pressure?
Old 07-23-2008, 08:08 PM
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I forgot to mention it is a T56 trans with a Fadanza lightweight flywheel and a spec 3 clutch.
Old 07-23-2008, 08:17 PM
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clutch feel should have nothing to do with vehicle speed, only rpm. Maybe you are shifting fast in the lower gears not noticing the stiff pedal and by the time you get to 100 your shift slows and you notice the stiff pedal? just a thought
Old 07-23-2008, 08:29 PM
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Change your fluid. The fluid has been cooked a few time from repeated floggings, and it needs to be changed. Been down that path a few times. The slave being inside the bellhousing doesn't help either.
Old 07-23-2008, 08:38 PM
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Originally Posted by DHorner
Change your fluid. The fluid has been cooked a few time from repeated floggings, and it needs to be changed. Been down that path a few times. The slave being inside the bellhousing doesn't help either.
Do you think it could get cooked in only 2 weeks? The car hasnt been running for long.
Old 07-24-2008, 12:13 AM
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Not sure if mine is speed related but my pedal pressure increases if I push in the clutch and rev past 6k.
Old 07-24-2008, 10:48 AM
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Originally Posted by SilverSS
Not sure if mine is speed related but my pedal pressure increases if I push in the clutch and rev past 6k.
That is where i shift when im getting on it; just past 6k. But i only noticed it past 100mph. It might be doing it at slower speeds too but maybe im not noticing it.
What causes that?
Old 07-25-2008, 05:56 AM
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centrifugal force on the pressure plate
Old 07-26-2008, 12:53 AM
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i noticed this with my centerforce clutch was very dependent on rpm. Not nearly as much with my ls6 clutch.




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