K021 Instructions v1.0
Bag E
Page
34
E4)
Install one 3/8” ball stud (6172) in the ball stud land on each side of the bulkhead
(1310). The studs go down from the top as shown. The photo shows the
outside, or #2 hole and no Dirtz Dialed Partz shims. Consult the Tuning Section
and Set-Up Sheet to determine which hole you will use and the number of shims
you want. If you use the #2 hole, put a 4-40 nut (6070) on the bottom of each
ball stud to help prevent breaking the bulkhead.
TEAM TIP: Some drivers use a #4 washer (6080) above the nut to further spread the
stress on the bulkhead. Many drivers prefer a locking nut (6071). It’s a pain to
remove and replace the nut when the car is assembled – you wind up holding the
nut with pliers. To re-install, thread the ball stud through the bulkhead and part
way into the nut, then let go of the nut and back the ball stud out until the nut
firmly contacts the bulkhead. Re-grip the nut and tighten the stud. This assures
the nut firmly contacts the bulkhead.
E5)
Install a 4-40 X 5/8” cap head screw (6003) in the rear center hole of the
bulkhead. Put the screw in until the threads are almost ready to emerge from the
part. (Left photo) Then turn the bulkhead upside down and place the two 3/8”
threaded inserts (6300) in their holes. The hexes face forward and fit in the
molded hexes of the bulkhead. Note that half of the hex is molded into the
bulkhead and half into the chassis. Keep the bulkhead upside down for
instruction E6.