4kq performance parts

[george nimmer]

I agree completely about the reduced effect of left foot braking and handbrake turns when the center diff is locked.

The center diff however gives a large advantage not in the straight, but in turns.  IME, with the center diff unlocked, the car just plows into the turns with massive understeer (this is at an autocross).

With the center diff locked however, it sticks like glue through quick turns.  OTOH, on *very* tight radius circles, having the center diff locked results in less performance because the wheels are fighting the locked diff as they *try* to turn at very different speeds.

I did just this same comparison at the SCCA solo II event this past sunday.  My time was more than 2.5 seconds faster with the center diff locked, and there was a very noticible improvement in the understeer department.

George


>I do not want to start this argument again but in my experience >driving
>around
>with the center diff locked does nothing to improve handling >unless you
>are
>driving generally straight in very slippery conditions. It also >makes left
>foot
>braking and handbrake turns much less effective. Test it for >yourself on
>the
>autocross or rallycross course and the clock will tell.