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Thread: How much will it take to get an 85 250R to go 50 in 300ft of sand?

  1. #16
    Join Date
    Nov 2003
    Location
    Michigan
    --
    1,220
    I see your from Mi and thought I would let you know there will be some dirt drags this saturday at Kalamazoo fairgrounds saturday and again on sunday at Three Rivers. I am suposed to run the lights at Kalamazoo but I'm not sure I'm going yet.

  2. #17
    Join Date
    Aug 2004
    Location
    Decatur, MI
    --
    63

    sweet

    I really wanna try it out but I think I should hold off until I get all the bugs worked out, Im havin some problems with it runnin really rich but Im startin to try different jets to work it out. Also, if its at a fairgrounds there will probably be a few more people watchin than I would be comfortable with at first.

    I live probably 25 miles from Kalamazoo btw.

  3. #18
    Join Date
    Apr 2006
    Location
    TEXAS
    --
    6
    If You Shave .030 To 040 Off Of The Stock 250 Head And Go Up To A Flatslide Carb Say 38 To 39 Mm And A Good Set Of Reeds And A Pipe Should Put You In The 55 To 56 Mph Range!! Did It For Me When I Started Sand Dragging!!

  4. #19
    Join Date
    Jan 2005
    Location
    Great Bend
    --
    704
    good job of digging up an ancient post. if you look at the upper left hand coner of each post you will see how old each post is.
    1985 KXT 250
    84 KX cylinder
    sprock racing head
    +2" Miltech swingarm
    frame mounted Rad

    1983 250R
    DG head
    290cc Big Bore
    CT pipe
    85R front end
    +1" Miltech swingarm
    2+2 axle NOS NASA
    18x10x9 Hoosiers

  5. #20
    Join Date
    Oct 2004
    Location
    Anaheim
    --
    1,270
    when my R was stock with a pipe 395 cabr, 19cc dome and no air box it did 5.2 in 300FT which was damn good i thought,.
    Adam
    86 ATC 500R the duner..
    85 ATC 500R...the not quite finished faster duner
    1985 ATC 250R Bone stock!!
    1985 ATC250R mx/duner
    1986 TRX370R MX/Duner
    94 Banshee 400PV Cheetah 105RWHP

  6. #21
    Join Date
    Jun 2004
    Location
    Oregon
    --
    1,784
    Playing with the timing might help...stator mods?
    1986 ATC 250R
    Ported w/ Cool head
    LED pipe and silencer.
    Vforce3
    Keihin PWK 38mm
    Works Ultra Cross Shock
    LSR +2 Axle
    American Star Racing +4 Swinger
    LED Intake
    Hi-Flite desert seat
    OEM clutch 89 upgrade
    2021 YFZ450Rse Rossier R5 Titanium Header AIS Delete FCI Vortex ECU


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