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New underdrive pulleys

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  • #31
    this was posted on bstuff from the owner of MRZ



    Here are the specs for our pulleys:

    OEM WEIGHT and DIAMETER: 5 lbs - 6 inch

    MRZ UDP WEIGHT and DIAMETER: 1.0 lbs - 5 inch


    1lbs versus 5 lbs is really light Our pulley should be ligther than the FFP UDP since we have machined 3 pockets for weight reduction.
    Last edited by loner666; 08-31-2007, 05:13 PM.
    1994 Chevy Corsica. Parted out. Just a rotting shell now
    Best 1/4mile ET - 12.9
    Best 1/4mile MPH - 111
    1997 Ford Ranger Splash
    Daily Driver

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    • #32
      it also appears that MRZ is a 20% UD whereas FFP is 18%. which means the FFP is 5.1 inches according to the math...hopefully not the new math.
      Last edited by torq455; 08-31-2007, 05:46 PM.
      Andy

      sigpic

      fastest 1/8: 10.19@ 67.17
      fastest 1/4: 16.16@ 82.70

      62mm TB, 1.6 roller tip rockers, Ostrich 2.0, UD pulley, TB heater bypass, K&N, 180* stat, No cat, 99Grand AM dual cooling fans. 4T65E swap FDR 3.69, EP LSD, F.A.S.T. transmission controller, TransGo shift kit.

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      • #33
        How do you remove the alternator pulley?
        Originally posted by wozxx...{is 92 mph in a school zone illegal?}
        I was going relatively fast thru a school zone and was caught. However, I managed to zip into a neighborhood and evade the cop. Could I get additional tickets by trying to run?

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        • #34
          easy way....impact! hard way....there is either an allen or a torx bit that fits in the center of the pulley. then use the correct size wrench and while holding the allen/torx, turn the wrench counterclockwise. reassemble with lock tight.
          Andy

          sigpic

          fastest 1/8: 10.19@ 67.17
          fastest 1/4: 16.16@ 82.70

          62mm TB, 1.6 roller tip rockers, Ostrich 2.0, UD pulley, TB heater bypass, K&N, 180* stat, No cat, 99Grand AM dual cooling fans. 4T65E swap FDR 3.69, EP LSD, F.A.S.T. transmission controller, TransGo shift kit.

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          • #35
            If you have an impact just hold the pulley with a glove on. The impact will break it loose no problem.
            2006 AWD TBSS 12.538 @ 106.92 1.66 60' Bolt-ons only

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            • #36
              Did anybody install their's yet...I wanna see some results...I got mine in the mail so I know you got yours.
              Originally posted by wozxx...{is 92 mph in a school zone illegal?}
              I was going relatively fast thru a school zone and was caught. However, I managed to zip into a neighborhood and evade the cop. Could I get additional tickets by trying to run?

              Comment

              • #37
                I got my crank pulley last saturday and its been installed since then. Its a quality piece, much lighter than stock, no gains I could feel.
                2006 AWD TBSS 12.538 @ 106.92 1.66 60' Bolt-ons only

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