light pulleys from UR (unorthodox racing)

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View Poll Results: Interested in UR pulleys?

Voters
15. You may not vote on this poll
  • lightweight crank (OE size) only

    4 26.67%
  • accessory pulleys only

    0 0%
  • accessory + crank pulleys

    3 20.00%
  • no

    6 40.00%
  • try again in a few months

    2 13.33%
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Thread: light pulleys from UR (unorthodox racing)

  1. #1
    1st Gear 20131pz69's Avatar
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    light pulleys from UR (unorthodox racing)

    Hi! I want lightweight pulleys- crank + others (should increase mpg slightly & engine response), so contacted UR who makes quality products. Here's their response:If 40 interested owners can be assembled we can make a crank pulley for roughly $200-250 depending on its size and shape. Each interested car owner would be required to submit at $100 deposit, once 40 deposit forms are received they will be charged and development of the part would begin. We would ship a production prototype to a willing owner for test fit and we would have them do a few other spot, then the owner would drive the car for a month to make sure everything functions accordingly. A production run would then be scheduled, which can take anywhere from 6-8 weeks depending on our regular production schedule. Once production is complete each owner is billed for the balance and shipped their pulley. If a group is interested let us know and we will e-mail the form to you that each owner will have to e-mail back to us.
    Last edited by 20131pz69; 01-29-2013 at 02:27 PM. Reason: oops! The only pulleys UR makes are crank pulleys, now. Please ignore the accessory pulley options
    2013 Cyber Gray/ black 2LT 6M RS. stage 0 tune for 91 octane- vtuner

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  3. #2
    BOOOOST!
    Hoon's Avatar
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    If you want to shave rotational weight buy a lightweight flywheel, don't waste your time with pulleys.

    Even under-drive pulleys have little benefit in a car with electric power steering, full throttle A/C cutoff, etc.
    Cruze 1LT M6 - K&N Drop In, Intake Resonator Delete, Black Label Tuned - 162whp/186wtq @ 18.5psi
    GSXR750 - Turbo, E85, approx 220whp
    ZX10R - Mufflers - 161whp

  4. #3
    World Rally Champion
    H3LLON3ARTH's Avatar
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    **** i think i hit the wrong one im down for all pullys

    edit ill be the test mule lol
    GO FOR GOLD

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    2012 ECO 6MT


    Current Mods:
    K&N Typhoon Short Ram Intake,Tinted Windows, Custom Made Cat Back Exhaust With IMCO High Flow Muffler, Trifecta Performance Tune Plasti-dipped stock ECO rims, ZZP Down-pipe, M-Tech Shifter Shortener, 15" Incriminator Audio Subwoofer in Custom Built Box pushed by a Hifonics BRZ-2100.


  5. #4
    1st Gear 20131pz69's Avatar
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    Quote Originally Posted by Hoon View Post
    If you want to shave rotational weight buy a lightweight flywheel, don't waste your time with pulleys.

    Even under-drive pulleys have little benefit in a car with electric power steering, full throttle A/C cutoff, etc.
    I've used lightweight flywheels before (8lb/ 13 lb). They are great, the engine picks up rpm like crazy, but also drops like crazy, making the car not as easy to drive for those not used to it. I was hoping a crank pulley would not have as much as an impact on the rate of change of rpm (need to be educated more on this). It's also cheaper to install.
    2013 Cyber Gray/ black 2LT 6M RS. stage 0 tune for 91 octane- vtuner

  6. #5
    Drag Champion jakkaroo's Avatar
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    been here done that.not enough support

  7. #6
    BOOOOST!
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    What would the estimated weight savings be?
    Cruze 1LT M6 - K&N Drop In, Intake Resonator Delete, Black Label Tuned - 162whp/186wtq @ 18.5psi
    GSXR750 - Turbo, E85, approx 220whp
    ZX10R - Mufflers - 161whp

  8. #7
    World Rally Champion
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    Now wouldn't lighter pullys make it where the engine doant have to work has hard.

    Sent from my Droid using AutoGuide.Com Free App
    GO FOR GOLD

    http://www.youtube.com/user/H377ON3ARTH?feature=mhee


    2012 ECO 6MT


    Current Mods:
    K&N Typhoon Short Ram Intake,Tinted Windows, Custom Made Cat Back Exhaust With IMCO High Flow Muffler, Trifecta Performance Tune Plasti-dipped stock ECO rims, ZZP Down-pipe, M-Tech Shifter Shortener, 15" Incriminator Audio Subwoofer in Custom Built Box pushed by a Hifonics BRZ-2100.


  9. #8
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    Be careful with lightweight pullies, Most vehicles have the heavy pulley to dampen the harmonic vibration the engine causes (Harmonic balancer). While they free up some ponies they also cause more wear and tear on the motor which will reduce engine life. Some made by Fluidamper or from ATI will keep the balance correct. It isn't going to cause engine failure or anything like that, but just file it in the memory banks if you do it that you may shorten the service life of the engine
    Nick
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    1988 Pontiac Trans Am GTA http://www.fquick.com/garages/viewvehicle.php?id=9723
    In the recent past:
    2002 Trans Am WS6 346CI of unbridled fury! 469RWH/434RWTQ 11.01 @ 123MPH You will be missed!
    2005 Subaru Legacy GT 309WHP/357RWTQ 12.21 @ 113
    2000 Subaru Impreza RS 203WHP/201WTQ 14.2 @ 103


  10. #9
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    As ridiculous as Chevy engineers were with designing this engine for fuel economy, they've probably already made or at least considered making the pulleys lighter than normal.

    I mean, there's already a variable-displacement oil pump, AC compressor, and alternator...

    The flywheel is already pretty light, just by driving the thing. It defeats that effect with a "rev hang" programmed into the ECU, however.
    NBrehm, Calintz and 20131pz69 like this.
    2012 Cruze 1LT 6M


  11. #10
    1st Gear 20131pz69's Avatar
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    Quote Originally Posted by jblackburn View Post
    As ridiculous as Chevy engineers were with designing this engine for fuel economy, they've probably already made or at least considered making the pulleys lighter than normal.

    I mean, there's already a variable-displacement oil pump, AC compressor, and alternator...

    The flywheel is already pretty light, just by driving the thing. It defeats that with a "rev hang" programmed into the ECU, however.
    that's true- there's some pretty impressive engineering on this car ....
    2013 Cyber Gray/ black 2LT 6M RS. stage 0 tune for 91 octane- vtuner

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