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Help FZR250 2KR & 3LN fuel tanks

Discussion in 'Yamaha 250cc In-Line 4's' started by ruckusman, Jul 28, 2021.

  1. ruckusman

    ruckusman White Mans Magic Master Premium Member Dirty Wheel Club

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    Guys,

    I'm brewing a crazy project - don't ask - lockdown mania - there will be a writeup!

    Anyway if anyone has a 2KR and 3LN, I'm interested to know if the 2KR tank will go into a 3LN frame

    Will likely be looking for a 2KR tank and tank cover soonish
     
  2. Linkin

    Linkin The Mechanic Premium Member Contributing Member Dirty Wheel Club

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    No they are completely different, 2KR tank is smaller and has a plastic tank cover, 3LN is larger and has no plastic cover.
     
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  3. ruckusman

    ruckusman White Mans Magic Master Premium Member Dirty Wheel Club

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    OH I know that, I'm wondering if the 2KR plastic tank will fit in the 3LN frame
     
  4. gregt

    gregt Well-Known Member Premium Member

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    No idea about the tank itself - but I cut a metal 2KR tank cover down to fit my 3LN frame.
    Shape isn't quite the same in plan view - but close enough due to the width of the frame spars.
    I may yet be boxing in part of the cover to use as a tank. Lower/smaller than OE 3LN.
     
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  5. ruckusman

    ruckusman White Mans Magic Master Premium Member Dirty Wheel Club

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    That's almost exactly what I was thinking of, so the 2KR tank cover will go on a 3LN frame and look mostly at home
     
  6. gregt

    gregt Well-Known Member Premium Member

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    I'll see if I can get a pic for you. I have also seen a fiberglass 2KR copy with a moulded in small tank on a 3LN style frame.
    Which is why i looked for a tank cover for mine. No-one could tell me who had the mould....
     
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  7. gregt

    gregt Well-Known Member Premium Member

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    Here you go. Wider at the front, narrower through the middle and wider at the rear.
    Bear in mind my subframe is narrower and lower than stock.
    I just drew a line and cut - then cut again till I got it as low as I could - but still clearing the in-frame tank i made. Pics of that on the build thread.


    cut 2kr 2.JPG cut2kr 1.JPG
     
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  8. ruckusman

    ruckusman White Mans Magic Master Premium Member Dirty Wheel Club

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    Awesome work @gregt - I'm looking at shoehorning in YZF600 engine, which will need that space up front

    FWIW they have the tank volume back and down low, like a combination of the 2KR and 3LN tanks, so if you cold get a beat up one, the lower section might transplant

    I'm going to have to re-check your build thread now as I must have missed the part where you made the tank for yours
     
  9. gregt

    gregt Well-Known Member Premium Member

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    Ahhhh....I'll put up a pic of the tank setup. I thought there was one there - but no.
     

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