S2000 Under The Hood S2000 Technical and Mechanical discussions.

Removing all free play from clutch rod

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Old 02-16-2017, 03:52 AM
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Originally Posted by plizzat
Thanks. But i'm thinking that it has to be related to when my diff broke. Shifting, clutch and everything was fine before. I can shift into the 3-4 I just need to let the rpms drop before and then it goes into gear smoothly, just not when the car is above 2k rpm.
Well in that case its a good thing you posted in a thread dedicated to clutch adjustment...
Old 03-20-2017, 03:15 PM
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If the clutch adjustment doesn't solve the grinding are their any other adjustments I can do or do people generally just get new synchros at that point?
Old 04-17-2017, 03:33 AM
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Ok, so I have my car out of storage and I am tending to a bunch of things including this clutch free play issue. I do understand Billman's advice. I know how to make the adjustment.

My question is this - after all the ink on adjusting the free play - what is reason for doing anything at all? How does it improve the function of the clutch when you remove the stock freeplay? In other words, why exactly are we doing this?

Last edited by rpg51; 04-17-2017 at 03:35 AM.
Old 04-17-2017, 05:12 AM
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It increases the disengagement of the pressure plate.

The S2000 is already on the verge of disengagement between shifts. The adjustment puts the disengagement at optimal to reduce disc drag and improve shifting.

It is extremely rare for an S2000 to need syncros. The problem lies in clutch drag over 95% of all cars. It always come back to clutch adjustment or rusted spline.

Last edited by Billman250; 04-17-2017 at 05:14 AM.
Old 04-17-2017, 05:54 AM
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If I'm reading this correctly the clutch needs to be minimal. Is there a measurement; how much free-play?

-- Chuck
Old 04-17-2017, 06:10 AM
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There is no measurable spot or distance.

Zero freeplay in the rod-to-master piston.
Old 04-17-2017, 08:28 AM
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Total freeplay = external freeplay (linkage, etc) + internal freeplay (built into MC)

Zero external leaves just the internal, which is all you need.

Zero external freeplay = ideal total freeplay
Old 04-17-2017, 08:45 AM
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Originally Posted by Billman250
It increases the disengagement of the pressure plate.
The S2000 is already on the verge of disengagement between shifts. The adjustment puts the disengagement at optimal to reduce disc drag and improve shifting.
It is extremely rare for an S2000 to need syncros. The problem lies in clutch drag over 95% of all cars. It always come back to clutch adjustment or rusted spline.
Ok - I'm persuaded. I'll do it this weekend.
I have a tiny "catch" sometimes going from second to third when cold. It will be interesting to see if this has any impact on that small issue. Otherwise, this car I have is pure delight. It just sings.
Old 04-17-2017, 09:05 AM
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This is just a wrench job under the car? Link to a photo(s) would be appreciated.

-- Chuck
Old 04-17-2017, 09:21 AM
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It's done under the dash in 10 seconds. Going to the dragon?

If you are experiencing 3rd gear catch/bump, bring the rpm up to 5k and get it in 3rd a bit quicker.

All S2000s do this, and all can avoid it with technique.


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