Editing S30/brakeupgrade php (section)

=== The Process ===

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'''Source your calipers.'''You can find 1979–84 Toyota 4WD truck calipers at a local dismantling yard or buy them new at an auto parts store or Toyota dealer. If buying used, get them while still on the truck so you can see how pads and clips fit, and mark them for driver/passenger sides.

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'''Clean and prep.'''Clean the calipers with degreaser and brake parts cleaner. Tape off line ends to prevent water contamination.

Paint them for a clean look—aluminum paint works well.

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'''Remove old calipers and trim backing plate.'''Remove your Z calipers. The backing plate will need trimming with a hacksaw to make room for the bigger calipers; to do this, remove the rotor first.

This is a good time to repack or replace wheel bearings if needed.

Set the new caliper in place before trimming to check fit. The plate is held with four Phillips screws—if they're stuck, vice grips can help. Once trimmed, reinstall the plate and rotor. You can also leave off the plate to aid brake cooling (optional).

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'''Install new pads and calipers.'''Install brake pads (semi-metallic recommended) and add anti-squeal compound if desired. The Toyota calipers bolt right into the Z caliper mounts—use the same bolts. Make sure the larger pistons and bleeder screws are on the top half of the caliper when installed.

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'''Reconnect brake lines and bleed system.'''Reattach the brake lines, carefully bending them as needed for alignment (don't pinch). After the lines are on, bleed the brakes thoroughly.

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'''Check wheel clearance and install wheels.'''Mount the wheels and check for clearance. Some setups will require wheel spacers for the larger calipers (available at auto parts stores), especially if using stock wheels. Most 15" Z wheels or aftermarket rims fit fine, but always check your specific setup.

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'''Test drive and enjoy!'''With everything back together, head to your favorite test spot and feel the improved stopping power. While it might not stop like a Formula One car, you’ll notice a big upgrade in braking ability. Good luck!