Jump to content


  • Content Count

  • Joined

  • Last visited

About jmeperu

  • Rank
    TT Bronze Member

Profile Information

  • Location
  • Interests
    mountain biking
  1. jmeperu

    this was my ride to work!!!!

    its a Zero S supermoto. www.zeromotorcycles.com and Santan, the girl was probably like 19, she was on her way to school.
  2. jmeperu

    this was my ride to work!!!!

    its perfect, like always.
  3. jmeperu

    this was my ride to work!!!!

    i have no idea how we did it, but we pulled it out.
  4. jmeperu

    this was my ride to work!!!!

    im married, but the other guy definately blew it. i was teasing him all day about that. haha.
  5. jmeperu

    this was my ride to work!!!!

    she pulled over and was baking up to turn around and go home to grab her school books and she must not have seen what was behind her. what are the chances, the only time I've recorded my ride to work, the only time I've seen a friend on the way to work.
  6. this chick is lucky we stopped
  7. jmeperu

    Justin Barcia video.... holy crap

    holy rev limiter batman
  8. awesome, thanks for the knowledge.
  9. so is it fine to ride with it unplugged? am i just using a less aggressive map? is there a chance that changing the needle will help with the problem or is it on the map to sputter right there?
  10. i unplugged the tps and it is much more steady. it also no longer has a hard hitting mid though. what does unplugging the tps do to the carb, does it affect spark advance? i only got to ride it up and down my driveway because there was a cop sleeping in his car at the end of my driveway for some reason. actually it was more like trying to sleep thanks to me.
  11. my 2005 did it too but barely. this is pretty annoying and i know it can go away with a little effort. i guess tomorrow i pull my needle and try some other ones.
  12. the bike is a 2007 yz250f with a bunch of work done to it. 290cc bore kit with +3 stroker crank ported and polished head with stock cams. its almost perfect it starts great cold and hot, it idles perfectly, great throttle response, great top end, but it stumbles and misses if you hold the throttle open from between 1/8 and 1/2 open at a steady setting. when im just cruzing down a fire road or thru the parking lot is when it does it. if i am at the throttle setting that it misses at and i open the throttle all the way it pulls hard and works great with no stumbles. it is only when my throttle setting is constant. i forget what needle is in the bike but its is on the 5th notch from the top. i started on the 3rd and it got better when i moved to the 4th and it barely changed when i moved to the 5th. so here is my question (finally) is there a wide variety of needles to choose from, and how to i know where to start?
  13. jmeperu

    jetting a big bore stroker 250f

    so ive got it pretty good now (as far as i can tell from riding it up and down my flat street) it pulls great up top and in the mid, but it still has a tiny stumble between 1/8 and 1/4 throttle when slowly accelerating or just cruising at that setting. its fine when i twist the throttle more and pass over that rpm. after a few hours of changing one size of one circuit at a time, this is where im at. the main is now a 180 the pilot is 42 the needle is on the 3rd clip fuel screw is 2turns out (when i turn it in it idles rough at about 3/4 turns out)
  14. jmeperu

    jetting a big bore stroker 250f

    ill try the richening the pilot and ill move the needle after that.
  15. jmeperu

    jetting a big bore stroker 250f

    here is what happens with the missing top end. its loading up. if i gradually roll on throttle i will have a big dead spot in the upper mid and the top wont hit untill i have the throttle fully open. if i pin it and just open the throttle all the way it will quickly stumble thru the mid and pull hard in the top end. i have a tach that i can wrap the sensor wire around the spark plug wire to get a rpm reading, will that work?