2005 Boxster Gear Grind

[racer_d]

Do you double clutch going from 2-4? This might help as it would slow down the shift and prevent a gnashing of the gears.

In your example I understand why you do it. I have done it myself on occasion, without a grind, but with a slow deliberate shift. You need to give the synchros time to do there job. My feeble mind says that if you shifted to third, you would be fine, but given the placement of the gears, and the large difference between the rates that they are spinning (lets say the car is at 6500rpm in 2nd but drops to 3500 in 4th, IS part of the problem. 4th gear is spinning at a demonstrably lower rate, if you consider that 3rd gear would be at, say, 5000rpm. You need to allow time to let the transmission catch up.

In addition, since the car is "used", what specifically does your warranty say about transmission repair? Not what you "think" it says, but what it actually says.