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Thread: 520R with the PC Exhaust

  1. #1
    Join Date
    Sep 2004
    Location
    Virginia
    Posts
    665

    520R with the PC Exhaust

    Here is a 520R(I think its 370king's bike).
    Mods were:
    Pusle Charger, FCR43mm carb, HRC Cam, Nmotion 520 Kit, and more
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    Precision Motorsports
    Mobile Dyno Services
    www.precision-ms.com
    ------------------------------

    My 440ex Mods: 12:5 Comp, White Bros. XC Cam, DRG Ported Head, DRG EXR Prototype Filter, Airbox Lid Off, 450r Carb, LRD Pro 4 Ballistic Full Exhaust...
    *Jetting: 3 turns out on the Mixture Screw, 48 pilot, Needle in the 3rd from top, and a DJ 170main*
    -----------------------------------------------
    Up to 42hp-30tq and For Sale*** Time for a new project!!

  2. #2
    Join Date
    Apr 2003
    Location
    MD
    Posts
    4,106
    some more saved from the digital archive,..

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  3. #3
    Join Date
    Apr 2003
    Location
    MD
    Posts
    4,106
    another
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  4. #4
    Join Date
    Apr 2003
    Location
    MD
    Posts
    4,106
    tq
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  5. #5
    Join Date
    Apr 2004
    Location
    New Hampshire
    Posts
    1,129
    I don't get it. This guy has a 520R, which I asume is a 450R with a big bore getting only 54hp. People all around this board are saying a 06 450R with a HRC is getting 50hp. So why would you go through all the hassle of a BB for only 4hp.

  6. #6
    Join Date
    Apr 2003
    Location
    MD
    Posts
    4,106
    good question.

    the adavantage of bigger 520 displacement is not the hp, it's the torque.

    hp is only calculated torque.

  7. #7
    Join Date
    Dec 2003
    Posts
    596
    The 06 w/HRC is not getting 50 rear wheels though. That was a Honda claim. Maybe crank if that sounds about right. Anyone know about how much hp you lose on bikes like this from crank to rear wheels? The only figures I've seen from people that have dyno'd their 06 w/HRC are from 43-46.
    '06 trx450r

  8. #8
    Join Date
    Feb 2005
    Posts
    294
    Originally posted by GE4x4
    I don't get it. This guy has a 520R, which I asume is a 450R with a big bore getting only 54hp. People all around this board are saying a 06 450R with a HRC is getting 50hp. So why would you go through all the hassle of a BB for only 4hp.
    LOL...that guy was me, and i just strated a whole new topic on my Mobile Dyno runs. Didnt even see this.
    Sold the LTR and kept my TRX! Tells you which one i liked better

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