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Thread: 250R air cooled

  1. #1
    Join Date
    Feb 2007
    Location
    MN
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    35

    250R air cooled

    Hey guys. I have been checkin out the forum latly and it looks great. I just finally got acctivated so i can start posting.

    I have a 1984 Honda 250R air cooled. It runs very well. I purchased it for $500 dollars with a a small crack on the seat and the back break did not work but he gave me a master cylinder rebuild kit with it. I have research and all i could come up with is that, that is a good deal. What do you guys think?

    Question 2 is What is a good recomended Ratio. I am leaning toward 40:1, The man i purchased it from did not really have a straight answer because his brother traded it to him because it would sell faster than a boat. So whats your Suggestion

    Question 3 What gear case oil to use. What brand and weith do 250's like.


    Question 4- I am in need of a petcock for the gas tank. I called a few local dealers and none of them have it. It is even discontinued at bikebandit.com. Does any one have one or know where i could get one from. Any help is greatly appreciated.


    Thank You much, Tom

  2. #2
    Join Date
    Apr 2004
    Location
    Brigham, Québec, Canada
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    1,529
    Answer 1. For me, sound like a great deal. Did the motor have been rebuilt lately?
    answer 2:???
    answer 3 Do a search on the forum. A guy guy asked the same question and got some answer.
    answer 4: ???

    1984 Yamaha YTM-225DX
    1985 Tri-Z 1985 Tecate 1984 Tri-Zinger and 1986 ATC250R projects
    Yamaha 3-wheeler owners club Join now!
    Official 3WW Yamaha 3-wheeler owners group
    Québec 3-wheeler riders group

  3. #3
    Join Date
    Mar 2006
    Location
    florida
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    2,328
    try dratv.com for a petcock...

  4. #4
    Join Date
    Feb 2007
    Location
    MN
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    35
    The motor has not been rebuilt but it runs great with lots of power. I am a mechanic as well so if I decide to i might rebuild it.

    I saw his post and it kindof was more to how it ran. Mine runs great i was just looking to see if 40:1 would be efficent enough. The impression i get is yes if its sythetic and no if its cheapo station 2 stroke oil


    Thanks for the quick reply though
    84 Honda 250R air
    84 Honda 200
    71 Honda CT70H
    01 Yamaha Blaster
    88 Arcticat El Tigre 5000
    85 Skidoo 440

  5. #5
    Join Date
    Aug 2005
    Location
    Oregon
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    490
    a 40:1 mixture is what i run in my quadracer and blaster....it seems fine.

    in the case i run 20w50 fully synthetic oil.

  6. #6
    Join Date
    Apr 2004
    Location
    Brigham, Québec, Canada
    --
    1,529

    1984 Yamaha YTM-225DX
    1985 Tri-Z 1985 Tecate 1984 Tri-Zinger and 1986 ATC250R projects
    Yamaha 3-wheeler owners club Join now!
    Official 3WW Yamaha 3-wheeler owners group
    Québec 3-wheeler riders group

  7. #7
    Join Date
    Feb 2007
    Location
    MN
    --
    35
    Alright Yeah i am just looking for prefrences as to what works great with the clutch and still lubes good.
    84 Honda 250R air
    84 Honda 200
    71 Honda CT70H
    01 Yamaha Blaster
    88 Arcticat El Tigre 5000
    85 Skidoo 440

  8. #8
    Join Date
    Jul 2005
    Location
    Rancho Cucamonga, Ca
    --
    228
    I run all my 2 strokes at 32:1 with yamalube and 91 octane. sounds like a great deal on a good running air cooler. Bel ray gear saver is a good oil for the tranny. I use dumonde tech tranny oil in mine.
    own:
    1986 250R- ported polished, carb mods, Esr atc-5 pipe and silencer

    1986 250R- mild porting, carb mods (Clean!)

    1985 350X- all stock (super clean!!)

    1985 350x- desert project in the works

    1986 250sx- Mostly stock

    1985 200x- (pretty clean mostly stock)

    1985 Yamaha tri zinger 60

  9. #9
    Join Date
    Feb 2007
    Location
    MN
    --
    35
    Alrighty. Thanks everyone for your reply's. They are much appreciated.

    Tom
    84 Honda 250R air
    84 Honda 200
    71 Honda CT70H
    01 Yamaha Blaster
    88 Arcticat El Tigre 5000
    85 Skidoo 440

  10. #10
    web3wheels's Avatar
    web3wheels is offline At The Back Of The Pack Arm chair racerFirst time rider
    Join Date
    Jan 2007
    Location
    st. louis
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    221
    question 2 about oil. i wouldnt run less than 40:1.
    i have an 85 triz and my buddy has an 82 250R.
    he runs 32:1 i run 36:1. i was told the more oil the better, til you start burning plugs up too fast. i got a lot of oil coming out the front of the pipe so thats why i went down to 36:1. the factory manuals say 20:1 on older bikes cause the oil wasn't as good but that doesn't hold true any more. i guess you know this being a mechanic. my dad is a mechanic. he says if it ain't broke dont fix it, but i just rebuilt the head on my z after the piston shot craps, and i wish i had done it earlier. I had to clean the shards out of the crank. the compression is 10x better, easier to start, more response thru the throttle, and I just thought it was slower before. i would suggest finding someone with a strong 250R and compare them. i think you should run more oil mix after rebuild also. either way you got a great deal, cant go wrong with red.

  11. #11
    viper's Avatar
    viper is offline At The Back Of The Pack Arm chair racerFirst time rider
    Join Date
    Feb 2007
    Location
    milan missouri
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    215
    there isnt anything wrong with running 40-1 ....use a good quality oil and you will be fine ....i prefere maxima castor or klotz benol ......this is all i have used 4 the last few years and have had very good luck with them ...dont seem to get nasty when thay sit for periods of time either like some other oils do ....the belray gear oil is very good but it is expensive ...you would be fine just running motor oil in it .........my .02
    350 stock cyl drag banshee
    85 yamaha tri-z stretched and powered by a SPROCK RACING big bore on alky baby ..yes its fast and no you cant ride it ...lol
    86 atc 250r
    86 350x

    ????? who knows what else ?????
    and if you want to take donations i will stay home !!!!

  12. #12
    Join Date
    Feb 2007
    Location
    MN
    --
    35
    Alright. Thanks for your input. DOES any one know where i can find a stock petcock for an 84 250r metal gas tank. Every where i have checked they are disscontinued. No luck yet. ANy help is appreciated

    Thanks Tom
    84 Honda 250R air
    84 Honda 200
    71 Honda CT70H
    01 Yamaha Blaster
    88 Arcticat El Tigre 5000
    85 Skidoo 440

  13. #13
    Join Date
    Sep 2002
    Location
    Minnesota
    --
    451
    tried ebay?

    Also, where are you in mn?
    1985 Honda 250es "Big Red" 1984 Honda 200s (Sold)
    1984 Honda 125m 1986 Honda 200x (new project)
    2003 Raptor 660 1978 Suzuki GS1000


  14. #14
    Join Date
    Sep 2002
    Location
    Ithaca, NY
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    2,596
    petcock, well, I was having a problem with my 350X petcock leaking. It is riveted together at the factory, but I drilled out the rivets CAREFULLY! and replaced the o-ring with one from an o-ring kit. I then used some thread rolling screws to put it back together and now no leaks. I have no problems with the one on my 83 R, so I cannot be sure if it is the same type or not. The point is that it should be fixable, if leaking is your problem.
    Haspin veteran '02, '03, '04, '05

    "Hey is your dash-cam on? Are we gonna be on C.O.P.S?"

    RECOVERING Trikeaholic

  15. #15
    Join Date
    Sep 2002
    Location
    Rittman, Ohio
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    6,276
    Ask 300 people, and get 300 differnet answers. Hopefully everyone agrees that safe and proper gas/oil ratio depends on the oil being used.

    General rule of thumb:
    General purpose 2 cycle oil 20-25:1
    Quality specialty 2 cycle oil (Yamalube, etc.) 32:1
    High performance/racing oils 50:1

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