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Old 07-05-2011, 01:46 PM   #11
san rensho
Registered User
 
Join Date: May 2011
Location: Miami florida
Posts: 1,591
Whats happening is whenever you upshift, when you press the clutch, the input shaft will slow down because it is now disconnected from the motor. If the input shaft slows down past the point where it will mesh with the next gear, then the synchro has to speed up the input shaft to the point it will mesh. The time it takes the synchro to get back up to speed is the "balk" that you feel.

This happens because most people tend to depress the clutch fairly early and hesitate before they start to move the shift lever. This hesitation is enough time to let the input shaft slow too much and make the shift balk.
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2000 Boxster 2.7l red/black

Previous cars

1973 Opel Manta
1969(?) Fiat 850 Convertible
1979 Lancia Beta Coupe
1981 Alfa Romeo GTV 6
1985 Alfa Romeo Graduate
1985 Porsche 944
1989 Porsche 944
1981 Triumph TR7
1989 (?) Alfa Romeo Milano
1993 Saab 9000
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