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Thread: Turbo crank mod, is it worth the money?

  1. 02-04-2007, 02:51 AM #1
    GoodKarma
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    Turbo crank mod, is it worth the money?

    I found someone that does this turbo crank modification, and curious if anyone thinks it is worth a hundred bucks. I understand the concept behind it all, but is there any downside? Can anyone say that they have been through this experience, and believe it was worth the expense?
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  2. 02-04-2007, 10:14 AM #2
    MikeRWK
    MikeRWK is offline First Time Rider Arm chair racerNew to the board
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    turbo crank mod?
    The 'Crazywheeler' http://www.3wheelerworldforums.com/s...ad.php?t=68941

    1985 Big Red 250es, Broken fenders, Lifted with RM125 air shock, Fartcan
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  3. 02-04-2007, 12:37 PM #3
    03 ORANGE SHEE's Avatar
    03 ORANGE SHEE
    03 ORANGE SHEE is offline Power User Got the holeshot
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    i did mine on the z, it really lightens it about 4-6 ounces, and revs faster
    1985 With "86" Plastic's,Custom 12" Alluminum Extended Swing Arm,39MM PWK,"TRX" Filter,9 Paddle TALLER HALLER'S on 11" Wide Rim's,LOT'S of Stainless,LOT'S of Alluminum,LOT'S of PowderCoating,NOTHING Stock..

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  4. 02-04-2007, 12:41 PM #4
    GoodKarma
    GoodKarma is offline At The Back Of The Pack Arm chair racerAt the back of the pack
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    Thanks Shee, that's what I was looking for! I think I will spring for the extra money, and hope that there can't be any down side to this modification.
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  5. 02-04-2007, 02:10 PM #5
    SWIGIN's Avatar
    SWIGIN
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    one down side....speed kills


    lol
    80s......185 atc, Yamaha tri-moto 200, 85 200x with tons of work
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  6. 02-04-2007, 02:16 PM #6
    WIkid500
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    Quote Originally Posted by SWIGIN
    one down side....speed kills


    lol


    But you will get there quicker!



    and we all know thats what counts. lol
    YTM-200, Wheeling machine!!!






    1985 Honda 200x...


    ...Just a simple mild 200x
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  7. 02-04-2007, 03:09 PM #7
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    Yamahauler
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    Ive heard of knurling or whatever you call it, its like the "cross-hatch" that gets pressed in, you dont loose any weight with it, but I think it would stir the air up in your crankcase a bit better.

    Hey 03 OS, dont you have that "mini" flywheel on your Z?

    Does your bike even idle? haha the crank has got to be real light.
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  8. 02-04-2007, 04:53 PM #8
    Bryan Raffa's Avatar
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    knurl yes talk to ronnie
    Last edited by Bryan Raffa; 04-10-2007 at 11:03 PM.
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  9. 02-04-2007, 06:14 PM #9
    Yamahauler's Avatar
    Yamahauler
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    Quote Originally Posted by bryan raffa
    knurl yes talk to ronnie
    Do you have to split the crank to do that, or can it stay together?

    I just got my crank balanced and now I want it knurled! I dont want to pay 50 bones to have it rebalanced.
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  10. 02-04-2007, 11:36 PM #10
    Bryan Raffa's Avatar
    Bryan Raffa
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    no you dont have to split it!
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  11. 02-05-2007, 04:48 PM #11
    03 ORANGE SHEE's Avatar
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    yes, i have the pvl/motoplat ignition, is has that tiny flywheel, smaller than the yz one.
    my crank has deeper groves in it, maybe 2/16 of an inch, but not as big as the ol' mans z, it idles, but its got a ruff idle, like a big cam on a four stroke
    1985 With "86" Plastic's,Custom 12" Alluminum Extended Swing Arm,39MM PWK,"TRX" Filter,9 Paddle TALLER HALLER'S on 11" Wide Rim's,LOT'S of Stainless,LOT'S of Alluminum,LOT'S of PowderCoating,NOTHING Stock..

    FASTEST Tri-Z on The Planet...MAKE A NOTE !! and the SECOND FASTEST, WRITE IT DOWN AGAIN!!!
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  12. 02-05-2007, 08:50 PM #12
    mnnmaz
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    How do you "Knurl" the crank with out splitting it? It this really possible, wouldnt you get metal shavings in your case???
    Original 85 TriZ owner

    Certified NASA welder PM me if you need any welding I do extended swingarms and everything you can dream of

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  13. 02-05-2007, 09:00 PM #13
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    team-red-rider
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    they meant splitting the crank
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  14. 02-05-2007, 09:02 PM #14
    InfamyKustomz
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    what do you mean by turbo crank mod? knife edging the crank? or the knurling? and mnnmaz, he said they press it in so i dont believe it would make metal shavings....
    the one downside i know aboutknife edging it, at least with my friends race truck is you gotta watch how high you rev it closer, a little too much gas, and there being less resistance will make it rev too high if your not careful...
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  15. 02-05-2007, 10:37 PM #15
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    Yamahauler
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    Well I went to my "machine" shop today to see if they could knurl my crank. Turns out my machinist died in the shop somehow! The place closed down and now its a trading card shop! I still cant believe it....
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