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  • Mitsubishi Big-Brakes: Inspection and Brake-Test Tips
  • From "Tricked Out"
    episode DTRK-109


    PHOTO

    With the new front-brake kit installed, including new 12-inch rotors, this Mitsubishi Eclipse has a smoother pedal feel and enhanced stopping power. They're also less likely to overheat during repeated high-speed runs at the track.
    PHOTO
    So far in in this episode of Tricked Out, the front brakes on the Mitsubishi Eclipse have been upgraded with front-brake kit and 12-inch rotors, and the brake lines have been bled. In this final segment, the new "big brake" system has been installed. Andrew Totolos and Bill Cummings now test the system to make sure everything is safe to take on to the open road.

    The new, bigger brakes provide not only an aggressive look, but also enhanced safety and performance. We also installed larger, lighter wheels and new performance tires to complement the new "big brake" system.

    Materials and tools used in this episode:

    Stainless steel brake-kit including:

  • 12" rotors
  • Calipers
  • Caliper bolts and pads
  • Flex hoses
  • Brackets
  • Clips
  • Nuts and bolts
    To remove old brakes:
  • Jack and jack-stands
  • Drop cloth and penetrating oil
  • Vacuum caps
  • Tin snips
  • Protective gloves
    To install new brakes:
  • Brake fluid
  • Brake cleaner
  • Rags
  • Safety glasses
  • Line wrench
  • Torque wrench
  • 3/8" Allen socket
  • Standard shop tools
  • Cup and clear hose for brake-bleeding
  • Lug nuts

    DIY Difficulty Rating for this Project: This job is a medium difficulty project, and will generally require two people. We gave it a difficulty rating of 2 on a 5-point intermediate-level scale. All the parts you'll need come together in the kit. The more complex parts of this project may be dealing with fluids and hoses. If you've done a brake job before, you should have no problem with these upgrades.

    advertisement


    PHOTO

    Figure A
    Final Brake Check and New Wheels

    There's nothing more important than the proper operation of the braking system on your car, so take the time to double-check your work.

    • After completion of the front-brake upgrade, check the brake pedal to make sure that you have a "hard pedal" feel.

    • Check the lines and fittings for leaks (figure A).

    • Make sure that the master cylinder is full of fluid.

    • A brake pressure gauge is a useful tool for checking the hydraulics of your braking system. Simply screw the gauge onto the bleeder port on any vehicle (figure B). When you hit the brake pedal, you should see a gauge reading of 1200 psi (figure C). The reading should be the same on both calipers -- i.e., on both sides of the vehicle. The pressure reading on the rear brakes will typically be a little less than on the front.
      Photo

      Figure B

      Photo

      Figure C


      PHOTO

      Figure D

    • Once the brake system checks out, it's time to mount the new tires and wheels. Check with the brake manufacturer to find out what wheel size and offset is necessary to handle your new brake system. On our Mitsubishi, we needed a larger size wheel. As a bonus, the open design of the new wheels shows off the new brakes (figure D). And since the new set is lighter than the factory rims, they'll compensate for the additional un-sprung weight of the big-brake kit and keep the car's smooth ride intact.

    • Install the new tires and wheels following the manufacturer's instructions. Once the wheels are on, turn them by hand to make sure that they spin freely.

      PHOTO

      Massive 12-inch rotors mean stop-on-a-thin-dime braking power.
      PHOTO
      PHOTO

    Now that the car is ready to drive, you want to make sure to take it easy at first, and test the new braking system. Test drive the car in a safe, open area like an empty parking lot to see if the brakes stop the car without a spongy feel.

    The Bottom Line:

    $775 Brake kit
    $5 Brake fluid
    $15 Line wrenches
    $1200 Wheels and tires

    Total for our project = $1995

    Tip from a Pro: According to brake specialist Bill Cummings, with a newly installed set set of rotors and pads you should give your vehicle approximately 200 to 250 miles of easy driving to properly seat them. Avoid taking the car above 60 miles per hour, and don't do any hard braking or test-stops until the first 200 to 250 miles have been driven. Hard braking when the brakes are new can result in glazing -- where overheating of the rotors and pads results in "glassy" surfaces at the contact points. That, in turn, reduces the braking efficiency.

    Important: Included in this segment are the steps in this automotive procedure as shown in the episode. These steps are general guidelines. With any particular vehicle, there may be procedures, specifications, settings, tolerances, components, etc. that are specific to that vehicle. There are also variations according to the type and brand of repair-kit you select. Always consult your vehicle's service manual when undertaking significant automotive repairs, and read and follow the manufacturer's directions and precautions that come with your kit or replacement parts.


    RESOURCES :

    Sport Compact Bolt-On Performance Guide: Import Cars (Sport Compact Bolt-On Performance Guides)
    Author: Joe Pettitt
    Order this book from Amazon.com.
    Voyageur Press (October 2000)
    ISBN: 1884089526

    Special Resources for Tricked Out, episode 109

    Stainless Steel Brakes Corporation (SSBC)
    Website: www.ssbrakes.com

    Racing Innovations, Inc.
    Website: www.racinginnovations.com

    ALT Wheels
    Website: www.altwheels.com

    The Fusion Zone
    Website: www.thefuzionzone.com


    GUESTS :

    Bill Cummings
    Stainless Steel Brakes Corporation (SSBC)

    Website: www.ssbrakes.com

  • ALSO IN THIS EPISODE: