" From: Ray Mick <rmick@xxxxxxx> " " Sprint cars use a manual fuel injection with a unit called a dial a " jet. The driver can rotate a knob in the cockpit to change the jet for " the return fuel. The unit can be loaded up with different jets prior to " racing. bruce has it right, that's the old hilborn [now kinser?] injection, been around since the '50s at least. ________________________________________________________________________ Andrew Hay the genius nature internet rambler is to see what all have seen adh@xxxxxxxxxxxxxxxxx and think what none thought