350 cc big bore kit for KLX250, Ready to ship!!

Discussion in 'Vendors' started by Bill & Jo Ann Blue, Nov 11, 2008.

  1. Kawidad

    Kawidad Long timer

    Joined:
    Jul 9, 2005
    Oddometer:
    6,425
    Location:
    Central Coast, Cal
    :lurk

    Good job! :devildog
    #21
  2. Bill & Jo Ann Blue

    Bill & Jo Ann Blue Adventurer

    Joined:
    Nov 20, 2005
    Oddometer:
    31
    Location:
    Wichita, Kansas
    <HR style="COLOR: #ffffff; BACKGROUND-COLOR: #ffffff" SIZE=1 itxtvisited="1"><!-- / icon and title --><!-- message -->Well, I finally got to put my bike with the 351 kit on the dyno this afternoon.
    Baker will post a copy of the dyno chart after this post.
    The maximum horsepower came to 26.55 at 7,100 RPM; maximum torque came to 21.11 at 5,800 RPM. This was with the following equipment in place:
    Stock KLX 250 header, Super Trapp slip-on muffler w/5 discs, Mikuni pumper flat slide TM33/34 carb. Kenda K270 5.10-18 rear tire. Stock gearing & 6th gear run.
    Pilot jet 40, main jet 140, air box lid on, KDX 200 snorkle, air box backfire screen removed, crankcase vent modified.
    Stock valves, ports cleaned, 351 c.c. piston 12.5:1 compression on regular pump gas, no detonation or ping.
    As a note, I changed the stock header to a Power Bomb header for another run on the dyno, but actually lost 1/10th horsepower.
    <!-- / message --><!-- edit note -->
    #22
  3. Bake

    Bake adventurer

    Joined:
    May 15, 2005
    Oddometer:
    10,752
    [​IMG]
    #23
  4. TheGreatDane

    TheGreatDane The Vining

    Joined:
    Mar 8, 2008
    Oddometer:
    3
    Location:
    MC Valhalla
    GREAT news about the 351 kit!
    Any overheating issues with this setup?
    Do you know when you might have the first kit ready for retail?
    #24
  5. TheGreatDane

    TheGreatDane The Vining

    Joined:
    Mar 8, 2008
    Oddometer:
    3
    Location:
    MC Valhalla
    I'm also looking to buy the carb and the 351cc kit when avaioable.
    Please advise.:evil

    Karsten@Keystonebenefitconsultants.com


    #25
  6. Mknpwr

    Mknpwr Have you seen my bike?

    Joined:
    May 3, 2005
    Oddometer:
    595
    Location:
    Planning my next ride...
    let me know when you have them ready!:clap
    :freaky
    #26
  7. Bake

    Bake adventurer

    Joined:
    May 15, 2005
    Oddometer:
    10,752
    Bill helped me install my 350 kit today. My bike is #3, last of the development engines.

    It really is a pretty easy job to do. You don't have to remove the radiators to do it. It took us about 2 1/2 hours without rushing.

    PM Bill for the kits, they will be available in a few weeks.

    She started right up. I'll be putting it through the first heat cycles this weekend.

    [​IMG]



    [​IMG]



    [​IMG]



    [​IMG]
    #27
  8. GB

    GB . Administrator Super Moderator Super Supporter

    Joined:
    Aug 16, 2002
    Oddometer:
    67,933
    I've moved this post from the big KLX250S thread in Thumpers, so Bill can spot it. You may also wish to contact him directly.
    #28
  9. Bake

    Bake adventurer

    Joined:
    May 15, 2005
    Oddometer:
    10,752
    I have my 350 kit installed, and so far I've ridden 85 miles on it, breaking it in gradually. I am using the stock carb and the stock pipe. The generally agreed upon easy mods, the Dynojet needle, a different pilot and a different main jet. No screen and the KDX snorkle.

    Off road, where I'm using 4K-6K rpm, it's a beast. No, it's not a Husky 650, but compared to the stock engine, it's a different motorcycle entirely.

    My engine is a test bed for several configurations, in the interest of helping people.
    #29
  10. TrailCruiser

    TrailCruiser Been here awhile Supporter

    Joined:
    Jan 15, 2009
    Oddometer:
    316
    Location:
    Mill Creek, WA
    I'm surprised the HP peaked at only 7,100 rpm. Where does the stock 250 peak by comparison?

    Is anyone surprised that the larger header actually lost HP?
    #30
  11. Bake

    Bake adventurer

    Joined:
    May 15, 2005
    Oddometer:
    10,752
    #31
  12. GB

    GB . Administrator Super Moderator Super Supporter

    Joined:
    Aug 16, 2002
    Oddometer:
    67,933
    Interested to get your long term impressions once you've had a few miles on the 350cc kit :thumb
    #32
  13. Bill & Jo Ann Blue

    Bill & Jo Ann Blue Adventurer

    Joined:
    Nov 20, 2005
    Oddometer:
    31
    Location:
    Wichita, Kansas
    Hello All
    All of the parts have arrived for the 351 kit for the KLX250 kits will be ready to ship Thursday 2-19-09.
    Thanks
    Bill
    #33
  14. motomark39

    motomark39 I reckon so

    Joined:
    Feb 28, 2007
    Oddometer:
    1,235
    Location:
    Odenville, Alabama
    What are the details on the kit, how are you getting 351cc, how much?
    #34
  15. GB

    GB . Administrator Super Moderator Super Supporter

    Joined:
    Aug 16, 2002
    Oddometer:
    67,933
    #35
  16. Bake

    Bake adventurer

    Joined:
    May 15, 2005
    Oddometer:
    10,752
    Please visit Bill's website for information concerning the different big bore kits, brake lines, skidplate and the TM34 carb.

    http://bandbcyclerestorations.com/

    Thanks
    #36
  17. GB

    GB . Administrator Super Moderator Super Supporter

    Joined:
    Aug 16, 2002
    Oddometer:
    67,933
    Merged together... Once my warranty on the KLX runs out.. I'm going to have to resist this temptation!
    #37
  18. MoBill

    MoBill Smiles when says dat

    Joined:
    Mar 10, 2007
    Oddometer:
    14,373
    Location:
    NJ
    :eyes

    Thanks.
    #38
  19. Bake

    Bake adventurer

    Joined:
    May 15, 2005
    Oddometer:
    10,752
    I am in development of an aluminum fuel tank that will be a bolt on kit and will supplement the stock 1.9 gal. tank. So far, I am working on the mock-up. It will be awhile before I get an actual prototype fabricated. My goal is to add 1 gal. We are serious about making this work, but I can't promise anything.
    #39
  20. GB

    GB . Administrator Super Moderator Super Supporter

    Joined:
    Aug 16, 2002
    Oddometer:
    67,933
    Looking forward to seeing what you come up with.. :thumb
    I'm hoping Clarke or IMS will do a see thru plastic tank, which will give us more range and a built in free fuel gauge. :pope
    #40