Results 1 to 13 of 13

Thread: Rich / Lean

  1. #1
    Join Date
    May 2003
    Location
    Shediac, New Brunswick
    --
    1,126

    Rich / Lean

    If you run lean will you have more top speed or if you run rich will you have more top speed?

    One my my friends said one thing and another said the oppisite.
    '04 450r, hr +3 stroker, s2 hotcam
    '84 Honda 200x
    slow restro


    Previous rides 82 Yamaha yt175, 85 Yamaha 225DR, 84 Honda 200M, Ski-doo Olympic 340

  2. #2
    Join Date
    Oct 2003
    Location
    Watertown, New York 13601
    --
    3,382
    i think you will mess the engine up if you run it lean.
    1985 YAMAHA TRI-Z 250 sold

    2006 YFZ 450

  3. #3
    Join Date
    Oct 2003
    --
    77
    Leaner is quicker, but hotter and is bad for the engine.

  4. #4
    Join Date
    Nov 2003
    Location
    Houston,Texas
    --
    1,044
    If you lean it out you will get more performance but it will be short lived.very short lived.It is better to run on the rich side.
    "I am going out of this world.....the same way I came in...screaming and covered in blood."

  5. #5
    KASEY's Avatar
    KASEY is offline weee weeee weeeeeeeeeee ! ! ! The day begins with 3WW
    Join Date
    Jan 2003
    Location
    ARIZONAS BIGGEST TROUBLEMAKER
    --
    4,239
    rich and lean have nothing to do with speed!!!!!! they are a condition of engine operation,,, an engine that will turn 8500 rpm's will do it running rich or lean,,, so there would be NO SPEED advantage,,,,

  6. #6
    Join Date
    Jan 2003
    Location
    Ashland City, TN
    --
    2,576
    Jetting for speed is stupid. If you have lot's of money to rebuild top ends frequently, run lean. You'll get more performance but IMO it just ain't worth it. I like to run my stuff a hair on the rich side to be safe.
    Trikes:
    1973 Honda ATC70-orange!
    (2)1985 ATC70
    1985 Big Red 250
    1985 250R

  7. #7
    JMiller's Avatar
    JMiller is offline At The Back Of The Pack Arm chair racerAt the back of the pack
    Join Date
    Nov 2003
    --
    386
    FORD Found On Roads Dead
    Current Rides:
    '87 Tecate 3
    '84 Tecate 3

  8. #8
    Join Date
    Oct 2003
    Location
    Long Island NY
    --
    135
    what would be runing lean or rich!????????!???!??

  9. #9
    Join Date
    May 2002
    --
    610
    Rich or lean would be determined by combustion chamber temp. High temp=more power(hotter explosion). This uses up parts more quickly. Like others said you can't have both. Use jets that provide the correct balance between higher power and engine longevity. Proper tuning of air/fuel mix is usually not easily attainable, it takes much trial and error. Just my.02
    Sam from Florida
    1985 BIGRED $ 200X

  10. #10
    Join Date
    Jan 2003
    Location
    Ashland City, TN
    --
    2,576
    Quote Originally Posted by JMiller
    FORD Found On Roads Dead
    ]


    WTF does this have to do with the post?
    Trikes:
    1973 Honda ATC70-orange!
    (2)1985 ATC70
    1985 Big Red 250
    1985 250R

  11. #11
    Join Date
    Oct 2003
    Location
    Watertown, New York 13601
    --
    3,382
    Quote Originally Posted by SSJ3Goku
    Quote Originally Posted by JMiller
    FORD Found On Roads Dead
    ]


    WTF does this have to do with the post?
    I dont think he even knows.
    1985 YAMAHA TRI-Z 250 sold

    2006 YFZ 450

  12. #12
    Join Date
    Oct 2003
    Location
    Long Island NY
    --
    135
    no i mena wut ratio gas/oil is considered rich/lean????

  13. #13
    Join Date
    Sep 2002
    Location
    Rittman, Ohio
    --
    6,276
    Depends on what kind of oil. Some oils run at 20:1, some at 32:1, and synthetics at 50:1 or even leaner.

//ArrowChat Integreation Code //