5 speed gearbox - how much power can they take?

[kcpaz]

Originally Posted by Escy

The other problem is there is no vehicle speed sensor on the diff housing (I assume the Boxster S uses the ABS sensors to generate it but i've not looked into it yet) and there is no mounting hole for the crank timing sensor on the flywheel sensor (that shouldn't be too hard to sort). The other problem is the starter motor location is in the wrong place, i'd need to notch the casing to fit it (it doesn't protrude that far into the bell housing.) Also, the Audi clutch plate won't fit the input shaft, not really an issue as both plates are 240mm but finding an off the shelf clutch plate that'll hold 500bhp might not be easy.

Neither the 5 speed, nor the 6 speed have a vehicle speed sensor in them for measuring vehicle speed. 986's and 987's use an output from the ABS to measure vehicle speed. On the 987 6 speed, the bellhousing casting has the location for the crank sensor just like the 5 speed, but it needs to be drilled out for the sensor and mounting hole, and tapped for the M6 retaining hardware, and you'll have to make some shims/spacers to set the sensor gap correctly with the reluctor ring on your flywheel. It's really not that difficult.