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Thread: Larger engine for Triglides

  1. #1
    900+ Posts rwhgme's Avatar
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    Default Larger engine for Triglides

    I have a dumb question, with all the problems with the lack of midrange punch of the 103, is there a way to put a larger engine in without a lot of modifications? It's either that or a new cam! Already have stage 1, air cleaner, new head pipes and mufflers. When hot this Trike has no guts, it can't maintain 75 in 6th on even a shallow grade. I will be dynoing the Trike Tuesdyay.

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    Default Re: Larger engine for Triglides

    The big question is what year is your bike? The 2011s had a gear change and they have plenty of grunt.

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    Default Re: Larger engine for Triglides

    I think Harley makes a 120CI Motor.
    SR

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    2500+ Posts trikermutha's Avatar
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    Default Re: Larger engine for Triglides

    I can maintain 75 mph on hot days with no problem. And my bike is all stock except for the air cleaner

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    4750+ Posts msocko3's Avatar
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    Default Re: Larger engine for Triglides

    Quote Originally Posted by sandrooney View Post
    I think Harley makes a 120CI Motor.
    SR
    You are correct, they make the 120R which would really be a hoot in the trike. I told my dad one day while were chewing the fat that I'd more than likely go with one of those if my 103 would ever take a dump. On the flip side if a person wanted the 103 to have more steam they could get there with some head work, decent exhaust and cams.

    Red Ultra Powered By Head-Quarters 120, Easy Clutch Pull By ClutchWIZ. 2012 GL1800 Hannigan. I've yet to ride a stock Harley which wasn't in need of a mechanical intervention.

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    Angry Re: Larger engine for Triglides

    HMO won' sell the racing motor to the general public, but that would be the ultimate power curve in a trike.

  9. #7
    2500+ Posts trikermutha's Avatar
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    Default Re: Larger engine for Triglides

    Bigger engine = more problems.

  10. #8
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    Default Re: Larger engine for Triglides

    Already been asked....but....what year is it? A bigger motor may not help a bit....unless you run it in the power-band it likes. This heavy trike does not like to lug-around at 2600-2700 RPM's in 6th. gear. The TC likes to run closer to 3,000.

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    Default Re: Larger engine for Triglides

    my 2011 has plenty of power stock

  12. #10
    800+ Posts FLTR2008TRIKE's Avatar
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    Default Re: Larger engine for Triglides

    Quote Originally Posted by trikermutha View Post
    Bigger engine = more problems.
    Not so. If its built correctly you will have less issues then a stock factory engine. My 117" can make more heat, but runs cooler then any stock Triglide with a 103" engine ( Cruising in 100 degree temps my oil temps stay at 210 ) . I also get the same fuel mileage as a 103". My 117" also make 130 ft lbs of torque @ 2400 rpms

    While the 120" Harley is selling is a strong engine its still is built with the same press together flywheels that can sissor on you. The 120" has no warranty at all. Additionally the 03 and older twin cam engines harley use to put timeken tapered bearing in the engine. Now they come with INA bearings which are not full roller bearing.

    For the money you would spend buying a 120" you could get more bang for your buck by taking your stock engine to a someone like TMan performance, R&R, Hillside or Barnetts have one of them put together a package custom built to your riding style and needs
    Overcoming Adversity is the path to better ideas!!

    2008 Roadglide w/ MOTOR TRIKE Kit
    S&S 124" Headwork & Custom designed cams by John
    Custom made right side shifter (Lost my left leg above the knee due to a hit n run driver) SOOS's custom made floorboard spacer

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