[SD987]

The Boxster is equipped with the revised 5-speed manual gearbox as standard. The final drive ratio has been adapted to the larger rear-wheel diameters. A new synchronization system has been introduced to increase shifting comfort.

All of the gears in the 5-speed and 6-speed manual gearboxes use synchronisers with a higher load-carrying capacity (implemented as a model improvement on the 2.7 litre Boxster (986) in 11/2003). As on the new Carrera the synchronisers for first and second gear have been given a wear-resistant carbon coating.

While in the Boxster synchronisation of 1st gear is now performed three times instead of once and twice instead of once for 2nd gear, synchronisation of 1st and 2nd gears in the Boxster S is now performed three times instead of twice. Third through sixth gears are now synchronised twice instead of once. The benefit of multiple synchronisations is also used in the new gearboxes to ensure a reduction in shift throw with the same shifting forces (in the appropriate
gears).

The proven cable-operated gearshift with two pull-push cables is used in the new Boxster models also. A shift throw reduction of 26 % in the 5-speed manual gearbox (standard on the Boxster) and 15 % in the 6-speed manual gearbox (standard on the Boxster S, optional on the Boxster) has been achieved on the new Boxster models while retaining the same ergonomic characteristics by moving the deflection point on the shift lever. The significant increase in the efficiency of the synchronisations has allowed the shifting forces at the gearshift to be kept the same or even reduced. On top of this play in the shift module under the shift lever has been reduced, resulting in a more precise gearshifting gate.

Both Boxster models use the same shift console. The proven double-mass flywheels for damping vibrations in the transmission caused by the engine have been retained in their familiar design for the new models. The new engines use the familiar singleplate dry clutches. In accordance with the change of materials in mid-2003, the clutch linings are lead-free. The contact pressure in the Boxster S has been adapted to the engine torque and the hub of the clutch plate adapted to the new transmission input shaft. However the Boxster S now also uses a plastic plate to optimise friction when the clutch is actuated. These measures have increased the durability of the clutch.

The upshot of all this, is that a rare defect seems to have been created in the 05 987 with 5 speed (obviously restricted to "base" model).

Yes, it's not something you've experienced until you've drive an 05 base with this problem and be thankful for that, since it's annoying as ****************.

You push the clutch in and move the shifter to the left to go into first, then when you try to push it into first it "locks you out" with the ferocity of a pre-Federline Britney Spears on a first date. Shifter won't budge until you release the clutch and try it a gain.