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86 maxim, is it possible to lighten the flywheel

Discussion in 'XJ Technical Chat' started by david brown, Apr 13, 2017.

  1. david brown

    david brown New Member

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    Hi I just bought a 86 maxim 700. The motor is out of the bike. I used to work for a Ducati Dealership and one of the mods we did was lighten the flywheel so the motor spins up quicker. It was an inexpensive way to get a little more umph off the line. So i was just wondering if this is something i can or should do. Thanks maxim1.jpg maxim2.jpg maxim3.jpg
     
    david brown, Apr 13, 2017
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  2. david brown

    david brown New Member

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    oh yeah, I'm getting it for $250 with a non-op.
     
    david brown, Apr 13, 2017
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  3. hogfiddles

    hogfiddles XJ-Wizard, Host-Central NY Carb Clinic Moderator Premium Member

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    You don't need to try to lighten anything so this will spool-up quicker........when you have it dialed in right, it'll go from 0 to 'holy- crap, I'm hanging on for dear life" in a just a few seconds.

    You have a Maxim X there....the liquid-cooled hot rod Xj------
     
    hogfiddles, Apr 13, 2017
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  4. Jetfixer

    Jetfixer Well-Known Member

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    RESTORE ...Please save it do not hack it up save it .
     
    Jetfixer, Apr 13, 2017
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  5. Polock

    Polock Well-Known Member

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    there's a flywheel in there?
     
    Polock, Apr 13, 2017
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  6. hogfiddles

    hogfiddles XJ-Wizard, Host-Central NY Carb Clinic Moderator Premium Member

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    Probably a Ducati thing.......

    I'm sure there's a fly on the wheel somewhere......
     
    hogfiddles, Apr 13, 2017
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  7. Andy555

    Andy555 Active Member

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    Interesting?friend live engine in original,just change complet exhaust and make tune on carbs,nothing else.and will be prey like a jesus for a long long time
     
    Andy555, Apr 13, 2017
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  8. david brown

    david brown New Member

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    thanks for the feedback. what kind of exhaust should i look for? No hacking going on here. almost got it to the frame for powder coating. tomorrow is all about sanding that blue stuff off the fenders and tank etc.
     
    david brown, Apr 13, 2017
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  9. Andy555

    Andy555 Active Member

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    I'll put 2x 2-1 or 4-1 straight true and befor end a shorter muffler(that is not too loud and that not stop too much gas),thus is my opinion.
     
    Andy555, Apr 13, 2017
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  10. hogfiddles

    hogfiddles XJ-Wizard, Host-Central NY Carb Clinic Moderator Premium Member

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    You'll get your best performance by staying with stock everything. Of course, making sure the valve clearances are correct,carbs are thoroughly cleaned, and set up correctly, air leaks are eliminated, etc......
     
    hogfiddles, Apr 14, 2017
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  11. k-moe

    k-moe Pie, Bacon, Bourbon. Moderator Premium Member

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    The downside of shaving a flywheel is that the rotating mass is no longer balanced. It's not such a big deal in a 90º V-Twin, since the pistons provide near-perfect primary balance, but on an I-4 you end up with an engine that is no longer smooth.
     
    k-moe, Apr 14, 2017
    #11

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