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Thread: 250EX Performance FAQ thread

  1. #21
    Join Date
    Jul 2006
    Location
    OHIO
    Posts
    425
    i also have a question, i NEED more power for hills!!! i all ready have a big gun slip on, it runs fine with the stock jetting, but what will a rev box do to my recon? will a cam for a 250 fit mine? port and poils? bore? tell me all!!
    2007 Yamaha YFZ 450
    -Bone stock.

    Future Mods
    -ITP holeshot XCRS
    -ITP Baja's
    -Rossier Full Exhuast
    -Jetted
    -K and N
    -Bomb Squad Graphics
    -IMS/Roll design bumper
    -IMS/roll design nerfs


    wow.. i need a job

  2. #22
    Join Date
    Jun 2005
    Location
    Illinois
    Posts
    4,104
    Originally posted by hillclimbingrec
    i also have a question, i NEED more power for hills!!! i all ready have a big gun slip on, it runs fine with the stock jetting, but what will a rev box do to my recon? will a cam for a 250 fit mine? port and poils? bore? tell me all!!
    I'm not sure on the '05 and up recons, but I BELIEVE that the only difference between the '04 and below model recons engine wise with the 250ex is the valve setup. The valves on the older recons and 250's are different. I'm not sure if that's all thats different though. Do you have an aftermarket air filter? A filter plus jetting along with your pipe should give you a considerable increase. Also I don't know if it's an option, but from what I remember you have some pretty beasty tires on your recon. Try a lighter tire such as Maxxis Razr's or Kenda Klaws. Huge mud tires really rob your power.
    406ex - January '13 QOTM

  3. #23
    Join Date
    Oct 2006
    Location
    oconomowoc WI
    Posts
    1,136
    if you want really good mud tires that are light get Mudlights..... thats what im putting on my 250ex
    2005 250ex
    DG- A arm guards
    Skid plate
    Sparks X-4 full system exhaust!
    K&N Jet Kit
    K&N air filter and outer wears
    SOLD!
    ------------------------------------------------
    2003 400ex.
    graydon nerfs
    skid plate
    A-arm guards
    Pro Armor XC Bumper
    Black HMF slip on
    Dyno Jet Kit
    K&N air filter
    Outterwears pre charger

  4. #24
    Join Date
    Oct 2006
    Location
    oconomowoc WI
    Posts
    1,136
    hey ryan add this to the faq... Vovoline 10w40 oil is a greAT cheap oil... its formulated for 4 stroke motorcycles and wetclutch ... so its purfect.
    2005 250ex
    DG- A arm guards
    Skid plate
    Sparks X-4 full system exhaust!
    K&N Jet Kit
    K&N air filter and outer wears
    SOLD!
    ------------------------------------------------
    2003 400ex.
    graydon nerfs
    skid plate
    A-arm guards
    Pro Armor XC Bumper
    Black HMF slip on
    Dyno Jet Kit
    K&N air filter
    Outterwears pre charger

  5. #25
    Join Date
    Mar 2007
    Posts
    214
    Originally posted by BlasterEaten250
    Good post You covered pretty much everything, but I would like to add in something. It makes it 10x easier to work on the 250 with either a Clymers manual or a Honda shop manual. From what I can tell, Clymers tells more on how to take apart the whole bike and put it back together, but doesn't go into as much detail on little things about the engine such as oil pressure. Where (from what I hear) the Honda Shop manual tells how to take it apart and put it back together, plus all the little engine details. I have a Clymers and it's more than enough for a backyard mechanic. It thouroughly explains on how to adjust the valves (and tells the clearance levels), shows wiring diagrams, gives a lot of electical information, and like I said before, it basically tells you how to take everything apart and put it back together. I've replaced my axle using it, replaced axle bearings, rear drums, adjusted valves, and a few other things with it. So if you do a lot of work on your quad yourself, I would definatly reccomend either a Clymers Manual or Honda Shop manual.

    (also let's try to keep this thread clean everybody )
    those blasters you were eaten where they in your dreams

  6. #26
    Join Date
    Jan 2007
    Location
    Mtn. view missouri
    Posts
    1,745
    nope ive eaten a few myself
    Brad Harrell #927
    www.oxcracing.com

    08 yz250f

  7. #27
    Join Date
    Oct 2006
    Location
    oconomowoc WI
    Posts
    1,136
    same here but they were stock wile i had my mods, remember it was a drag!
    2005 250ex
    DG- A arm guards
    Skid plate
    Sparks X-4 full system exhaust!
    K&N Jet Kit
    K&N air filter and outer wears
    SOLD!
    ------------------------------------------------
    2003 400ex.
    graydon nerfs
    skid plate
    A-arm guards
    Pro Armor XC Bumper
    Black HMF slip on
    Dyno Jet Kit
    K&N air filter
    Outterwears pre charger

  8. #28
    Join Date
    Jan 2006
    Location
    NE, IL. No, not Chicago.
    Posts
    4,473
    Originally posted by honda450rider33
    those blasters you were eaten where they in your dreams
    maybe if you had the common sense to realize that it could be a joke you wouldnt look like such an ignorant moron. we have a neighbor that owns a blaster, so dont let your panties get in a bunch. you're already not very well liked in this section because of the other useless thread you started about how 450's are better. anyway, thanks for the amusement.
    ~Mike~
    2000 Honda 416EX

  9. #29
    Join Date
    Mar 2007
    Posts
    214
    wow i am not liked by a bunch of 250ex riders what will i ever do

  10. #30
    Join Date
    Mar 2007
    Posts
    214
    Originally posted by Pipeless416
    maybe if you had the common sense to realize that it could be a joke you wouldnt look like such an ignorant moron. we have a neighbor that owns a blaster, so dont let your panties get in a bunch. you're already not very well liked in this section because of the other useless thread you started about how 450's are better. anyway, thanks for the amusement.
    and i never posted a thread saying 450's are better

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