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      10-26-2016, 10:12 PM   #15
wjones14
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Drives: 2021 M2C
Join Date: Oct 2014
Location: Niantic CT

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Quote:
Originally Posted by XutvJet View Post
I thought I'd update this thread after nearly two months. This issue is clearly caused by the internal clutch delay valve (CDV). By being a bit slower and careful with my clutch foot, I don't experience the issue.

Another thing, running a clutch stop seems to negatively impact around town drivability as well. I ran a homemade 3/16" thick clutch stop for quite a while to reduce the clutch throw and engagement point. Apparently the CDV and self-adjusting clutch mechanism do not like you running a clutch stop. I had become annoyed with how much I had to "think" when trying to get a smooth start with the Sport throttle mapping. It was often a very slight bog or a bit to rapid. The 1-2 shift could be a little jerky too. I've been driving manuals for decades and found this car to be by far the hardest to leave the line smoothly when trying to leave at a moderate pace. Turns out the clutch stop was the problem. I removed that last week and all the modulation issues disappeared. I guess I ran the clutch stop for so long that I forgot how the car drove prior.
I agree with you about the M/T being more difficult than most to drive smoothly.

But I don't see the clutch stop as being a negative. I thought the factory clutch travel was excessive, so I took BentZero's tip and bought the $10 Burger Tuning clutch stop - best cheap mod ever! I removed one of the washers because there was no free play before engagement with all of them. With the removed washer it grabs maybe 1 to 1-1/2 inches from the floor. About the same engagement point as my Mini with no clutch stop.
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Vehicles: 2021 Alpine White M2C 6MT; 2011 Kawasaki Z1000 (1/4 mile 10.3 seconds @ 129 mph - stock)
Previous: 2018 Camaro 2SS 1LE 6MT; 2015 BMW M235i 6MT; 2015 Mini Cooper F56 6MT; 2005 Mustang GT 5MT; 2003 Mini Cooper R50 5MT
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