Wednesday, June 23, 2010

How Fast Honda Express Go | Top Speed | Stock | Performance Tuning...


If you own a 1977, 1978, or 1980's Honda Express moped... I am sure you have thought, "How can I make my stock express noped go FASTER!!!" 20-28 mph is great for cruising back roads, downtown small cities, or even along the beach/boardwalk. But, when you need to keep up with traffic on some busy roads or just get somewhere a little quicker... Express Honda performance modification might be what you are looking for. Also, most people don't want to spend $300 or even $150 on aftermarket performance parts. Honda moped owners just want to spend a few hours in their garage and tinker to push out 2-3 or even 10+ mph more. It can be done!

Here is a recently uploaded YouTube video of a vintage honda express owner who modified their stock moped muffler, bored their intake out, enlarged exhaust port, and did a spark plug chop. This brought his stock honda express top speed from 26 mph to 35+mph with little to no money spent.



Here are some initial/standard performance tuning tips to get you started (look around this site for much more information regarding honda express performance tuning):

My next post will have detailed information on purchase aftermarket performance parts for your honda express nc50, na50, express sr, express II mopeds.

    10 noped comments:

    Rob said...

    I have a 1982 Express Sr. I am looking for aftermarket parts for it............anyideas where to get them?

    jfk said...

    Try mopedarmy.com, ebay.com, craigslist.org, and mopedriders.org

    JC said...

    Hello there, fantastic site by the way. Have you any info about opening up the exhaust port? I'm looking everywhere and see it mentioned but with no real details. Don't want to screw it up! Cheers.

    jfk said...

    JC - I have video of step-by-step on how to modify the muffler. I don't know if that is what you mean by opening up the exhaust port. I just need to find the time to edit/splice the video together and post! :( And, Yes! It would be smart not to screw up.

    Keep checking back... I hope to post the video soon.

    - JFK

    Rob said...

    How do I Drain the oil out of the gear case? I have a 1982 NX50, and im a firefighter.........i need to be able to get up to about 35MPH easy, What else can i do to get faster?

    JC said...

    Cheers JFK. I'm planning on putting on an expansion chamber, as well as a host of other stuff to try and get it to the dizzy heights of 30+mph. I read somewhere that if you open up the exhaust port on the cylinder barrel where it meets the actual exhaust then it helps. Found this vid for reference, I'm going to give it a go (I'm not touching the port on the inside). Will let you know.
    http://www.youtube.com/watch?v=ZCVU18g_3xQ

    nickerachi said...

    Hey JFK! Did you ever make that muffler modding video? Would LOVE to see it!

    jfk said...

    @nickerachi,

    Ok... since you asked nicely... I will try to make it a goal to post the video within a week's time. The video was taken between 2 different mediums and pain in butt to edit together. It totally works what I did though... I am running stock carb, 70cc DR kit, stock muffler w/ mod, everything else stock.. and pulling 38+ mph.

    Check back soon and often... oh and click some ads so I can get some $$$ motivation to make it too...

    -=JFK=-

    jfk said...

    @nikerachi,

    DONE. How To video for muffler modding a 1978 honda express moped is posted:

    http://www.hondaexpressmoped.com/2011/04/honda-express-moped-muffler.html

    Have fun!

    -=JFK=-

    nickerachi said...

    You are the man. This site is great, JFK! Thanks so much!

    So what are your speed results?! I'm currently at about 27-29... would like to get in the mid 30's!

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