2-stroke vs 4-stroke

Discussion in 'Motorized Bicycle General Discussion' started by mikevkid, Sep 25, 2012.

  1. mikevkid

    mikevkid New Member

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    Just wondering what kinda engine you guys like better.

    Ride on .shft.(c)
     
  2. JonnyR

    JonnyR New Member

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    i love my 2 smoker but am going to 4 stroke for my next build
     
  3. The_Aleman

    The_Aleman New Member

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    I've put a number of miles on both, I prefer the 4-stroke. The 2-strokes are compact and make nice power for their size, but the 4-stroke has it beat in long run reliability.
     
  4. Mannhouse51

    Mannhouse51 New Member

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    I love my 2 smoker. Simple and reliable.
     
  5. Mannhouse51

    Mannhouse51 New Member

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    I've had good luck overall with my 2 stroke. Simple and reliable. Sorry about the double post...LOL...oops.
     
    #5 Mannhouse51, Sep 25, 2012
    Last edited: Sep 25, 2012
  6. wheelbender6

    wheelbender6 Active Member

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    If you plan to commute on it daily, build a 4 stroke (no mixing gas and oil).
    Otherwise, a two stroke is simpler and normally cheaper.
    Some guys just don't like the sound of a two stroke. Personal preference.
     
  7. mikevkid

    mikevkid New Member

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    I already have a 2-stroke, but I was thinking of buying a 4-stroke. and thanks guys for your opinions! :)
     
  8. Easy Rider

    Easy Rider Santa Cruz Scooter Works

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    I think a small 4 stroker for cruising the neighborhood and daily riding but a 2 stroker for racing.dnut
     
  9. Goat Herder

    Goat Herder Gutter Rider

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    Mebbe you can enlighten me on the reliability part? I know China H.T. kits are junk and will not argue that... Erm'm I don't use thosednutdnut
     
  10. Codiferous

    Codiferous New Member

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    I prefer my two stroke. Its cheap to replace, fairly reliable, a little loud but i like it. Plus, my bike strives on the old look, and the four stroke wouldnt cut it in that respect
     
  11. Goat Herder

    Goat Herder Gutter Rider

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    Well when I do think about it a low powered 4 stroke kit will likely have less vibration than a bigger one. A plus side to the introductory power lever 4 stroke can be forgiving too as it would be better suited to the Walmart bikes these days that folks flock to. In light of buying the cheapest stuff possible..
     
  12. GearNut

    GearNut Active Member

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    I have both.
    I really like the power that the 2 stroke puts out. I don't like the cheap bearings and nearly non-existent quality control that it was made with though.
    I really like knowing that my 4 stroke will last a long, long time without any modifications necessary. It is quieter, requires less maintenance, runs smoother by a huge margin, and so far has been much cheaper to operate, though it cost more initially to get.
     
    #12 GearNut, Sep 25, 2012
    Last edited: Sep 25, 2012
  13. Easy Rider

    Easy Rider Santa Cruz Scooter Works

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    GearNut,
    What motor would you recommend and is it spindle or chain driven?
     
  14. young grease monkey

    young grease monkey New Member

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    if we are talking about kits 2 strokes vs kit 50cc 4 strokes, 4 strokes have about the same power, are bigger and more expensive, but much more reliable. the 2 strokes look better, too. i am still building my 99cc predator. the disadvantages are size, weight and price for the drive train, to be expected because it's not a kit. they are cheap to replace, only $100. tons of power and reliability. i have a 2 stroke 125 dirt bike and love it, i like the sound and power. super light, too. the only good 2 stroke for motor bikes is the morrini and similar engines that cost more than $400. i've never rode one but i like manual clutches so i will never buy one. i am thinking of using a 65cc dirt bike engine for my next build, they are super light 5 speed manual 14hp screamers. i will buy a bike and part it out, possibly getting the engine for free plus my labor. i calculated it will have a better power/weight ratio than a kawasaki ninja 250.

    bottom line, it's personal preference. what kind of performance do you want? what is your budget? what skills do you have?
     
  15. JonnyR

    JonnyR New Member

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    what bike engine are thinking thats that powerful and small? im looking into new engine options
     
  16. young grease monkey

    young grease monkey New Member

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    a morrini will do it.
     
  17. Goat Herder

    Goat Herder Gutter Rider

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    May not find a Morini any more can try one of these. Dax GP50 R KTM clone. Chinese version. Not a Kit and I suspect may be harder for the wrong fellow to fine tune? In which case a 4 stroke kit may be better? http://thatsdax.com/
     
  18. young grease monkey

    young grease monkey New Member

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    they are easier to mount than 4 strokes, and have the gearbox built in. all ya need is a gas tank, throttle, and sprocket. almost as much power as a 212cc predator. the biggest problem people have with installation is the exhaust pipe, it must be curved around the down tube. might be too much power for some people.
     
  19. Saddletramp1200

    Saddletramp1200 Custom MB Buiilder

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    The motors that run are my favorite. ( finely figured a way to awnser that) (c)
     
  20. GearNut

    GearNut Active Member

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    I have a HuaSheng 142F which is a clone of a Honda GXH50, both 49cc
    5/8" output shaft.
    I recommend either if them. Arguably the Honda is better built, but the HuaSheng is no slouch either and costs alot less.

    From what I have read the Harbor Freight engines are very good quality, and I would recommend them as well based on all of the positive feedback from the many owners of them on this site. I have no experience with them though.

    To cut my rambling short:
    If you are going for a complete kit, I recommend an EZM kit first followed closely by the stage III 4GT kit with the 100 tooth solid flywheel and 12 tooth freewheeling output sprocket.
    HuaSheng engine for both.
    Neither are speed demons, 35 to 38 MPH top speed, But I personally don't want to go that fast on a bicycle anyways.
    That's what motorcycles are for.
     

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