i would assume this is done after i bleed the system and have applied pressure to move the new pistons in and out, but do i need to have the car on the ground and move , or right away after the bleeding has been completed?

phil

You should get the venting clearance close before you start bleeding. There is only limited movement in the rear caliper pistons because of the eBrake setup. Having a large gap can cause the adjuster to pop out of the piston, and that could mean disassembly of the caliper to fix (in a worst case scenario). So set them close to correct before you start, then reset them after bleeding.

Be sure you clamp down the rotor BEFORE attempting to set the venting clearance (lug bolts work fine if they bottom out on the disc). Set it to .004" (the book is wrong) at the tightest spot, and check each one at several points. Set the outer, then the inner, and check each adjustment after they're set. To some degree, they affect each other. The feeler gauge should slip through with only light resistance.

The Cap'n

Make sure your cable is disconnected when you set it, and adjust the cable if it changes the setting.