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Thread: remove oil tank and premix fuel or not? 1980 Trimoto 125

  1. #1
    Join Date
    Aug 2007
    Location
    Saskatchewan
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    4

    remove oil tank and premix fuel or not? 1980 Trimoto 125

    Fresh rebuilt motor...piston,rings, max. oversize, boyesen reeds. No uni yet, no jetting. Want to brake in before I do too much.

    I wouldn't mind keeping oil tank/injection but have heard others that have oil injected two strokes feel safer premixing. On the other hand most or all newer snowmobiles have oil tank/injection and they work quite well.

    I guess what I am asking is, should I stick with the oil injection? How many of you have bypassed the injection and premixed fuel?

    Do these older trimoto's have reliable oil pump/injection?

  2. #2
    Join Date
    Mar 2006
    Location
    PA
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    3,515
    tear it off and throw it as hard as you can....lol

    pre mix is the only way to know 100% that your getting the right mixture
    80s......185 atc, Yamaha tri-moto 200, 85 200x with tons of work
    90s......89 Suzuki quad racer 250 (raced 250 A class for 6 years, late 90s.. custom framed 250x with long travel shocks and a built 350x motor.... built Honda 110
    00s...... chomeoly framed 350 RX with all the goodies (thanks to my bro)
    2012.....Replaced the 350x motor for a 444cc YZ426
    WWW.HREATV.COM

  3. #3
    Join Date
    Dec 2004
    Location
    Baltimore, MD
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    6,088
    I have a 1980 trimoto 125 and my oil injector was unhooked before I bought it. I premix and have no problems. I'm not sure what it cost you to do all this work to yours, but I have some aftermarket bits on mine. If you 28 year old oil pump fiails, how much money are you out of and how long will you be down till you fix it again? To me, premixing is cheap insurance. And as far as premixing goes, if you use a high quality 2 stroke oil, you will be running a better ratio helping to ensure a longer lived, cooler running trike that has less maintenance problems and less fouled plugs. But the final choice is up to you. With premix, as long as you have fuel, youi'll have oil. If your pump fails while you're out riding????????

  4. #4
    Mr.Jake's Avatar
    Mr.Jake is offline At The Back Of The Pack Arm chair racerFirst time rider
    Join Date
    Oct 2007
    Location
    Ontario
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    192
    i agree 100% with these guys, premix that shiat
    -------------------------------------


    83 Yamaha 225DX
    84 Yamaha 225DX
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  5. #5
    300rman's Avatar
    300rman is offline My other user 3WW ID was Nitebiker07. Teaching quads a lesson
    Join Date
    Nov 2007
    Location
    toledo
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    2,667
    PREMIX, AND REJET......you go riding a new motor without rejeting, and you could fry your motor.

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