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Info My ZXR250C Progress/Problems

Discussion in 'Kawasaki 250cc In-line 4's' started by LexLuthor, Aug 28, 2015.

  1. LexLuthor

    LexLuthor Well-Known Member

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    Whoops the above was meant to be for a private text but if any of you guys actually know the exact size itd be greatly appreciated :)

    Sent from my SM-G900I using Tapatalk
     
  2. Th3_Huntsman

    Th3_Huntsman Senior Member Premium Member Contributing Member

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    They are supposed to be 12mm but 12mm spools dont fit, i have my spools on with a nut behind. They are staying on as its a PITA lol
     
  3. LexLuthor

    LexLuthor Well-Known Member

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    Hey guys

    Here's a pic of my new toy/money pit/trouble maker

    20150826_163434.jpg
     
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  4. LexLuthor

    LexLuthor Well-Known Member

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    Also took her for my first proper ride yesterday around the area. The new battery worked like a charm. After learning more about this bike as i go along it might not have the carb issues i initially thought but might have been my inexperience with the idle adjuster lol. We took the farings off to change the spark plugs but I had no idea they were in such an inconvenient location so I left them for now. Please tell me there's a much easier way to access the spark plugs.......I'm sure all the ZXR owners know what i'm talking about :/.
     
  5. Phil

    Phil Senior Member Premium Member Contributing Member

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    Sure wish I could be the bearer of good news re: changing plugs but alas there is no easy way, it's considered Japans revenge on the world. Sadly it's not just the 250cc but many of the larger bikes also. Room is certainly at a premium....good luck
     
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  6. LexLuthor

    LexLuthor Well-Known Member

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    Ahhh shizz. So i'm going to have to move the fan/radiator and stuff i guess? Any suggestions?
    Also after messing with the all the bloody fairings I swear my full license bike will be a naked/streetfighter lol :)
     
  7. Th3_Huntsman

    Th3_Huntsman Senior Member Premium Member Contributing Member

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    You don't have to drain coolant. I've found that if you undo the radiator bolts and fan plug and temp plug you can maneuver it lower then change them. Its adviseable to do this with a dead cold engine.
     
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  8. DougFella

    DougFella Well-Known Member Premium Member Contributing Member

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    My Bike:
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    This is how I change plugs,
    1. Remove side farings
    2. Undo the 4 bolts holding the radiator onto the frame and let the radiator drop down until the fan naturally rests further down (this will give you a bit more room to move)
    3. Move plug caps and leads out of way
    4. Use a socket wrench (the tiny ones) and experiment with different lengths until you find something that slots down and still gives you enough room to undo
    5. Even if you use a spark plug remover socket you may find it either won't grab the plug or the extra length with a plug attached won't let you remove it easily. So you may have to use some pliers or something to get the loose plugs out
    6. Replace plugs, reassemble and drink your choice of alcoholic beverage to alleviate pain and frustration
    Make sure you are using the right plugs, NKG CR9E or ND U27ESH N. I think most of us use the NKG ones, if you wanna go overkill like me there's also an iridium version.

    Make sure the plug gab is right before you put them in. It should be 0.7-0.8mm see below:

    Plugs.PNG

    By the way, nice looking bike you got there!
     
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    Last edited: Aug 31, 2015
  9. LexLuthor

    LexLuthor Well-Known Member

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    I may give this a try when it's time. I should have found an easier hobby than bikes (long walks on the beach?)
    And thank you :). She's not too bad!
     
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  10. Murdo

    Murdo The Good Doctor Staff Member Premium Member Ride and Events Crew Contributing Member

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    Nice looking bike.
    Make sure you blow/clean around the plugs before removing them. Don't want dead beetles or small stones to drop down the hole while plug is out.
     
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  11. Phil

    Phil Senior Member Premium Member Contributing Member

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    Hang on a minute, that's not a hobby.....it's a life style :lolsign:
    Also as a follow on from Dougfella's instruction......if you have problems getting the plug out, grab a bit of garden hose and insert over plug....works OK and you can do the same when inserting new plugs in. Life is a challenge and then you buy a motorcycle !!
     
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  12. kiffsta

    kiffsta Administrator Staff Member Dirty Wheel Club Contributing Member

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    or use your existing spark plug cap, they grab onto the top of a plug just fine :)
     
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  13. DougFella

    DougFella Well-Known Member Premium Member Contributing Member

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    Why! WHY DIDN'T I THINK OF THIS EARLIER!
     
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  14. Th3_Huntsman

    Th3_Huntsman Senior Member Premium Member Contributing Member

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    Forgot to mention @LexLuthor your bike looks nice. That's a legit jdm zxr250c paint scheme so keep it like that! Especially if they are oem fairings!
     
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  15. Damus

    Damus She is a BEAST and riding it is comparable to sex Dirty Wheel Club

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    Yeah lex that kit looks JDM to the max. I'm a little jealous!
    could even be the original, don't drop it!
     
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  16. LexLuthor

    LexLuthor Well-Known Member

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    Thanks for the love guys much appreciated :)

    Just another noob question what fuel does the bike take? The guy i bought it off said he was putting 98 octane in so i assume thats okay?

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  17. Damus

    Damus She is a BEAST and riding it is comparable to sex Dirty Wheel Club

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    Its compression is decently high so if it was me personally I would use 95-98 should be fine either all.
     
  18. DougFella

    DougFella Well-Known Member Premium Member Contributing Member

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    I use 91 or 95.

    98 is harder to ignite and designed for newer cars that run like 50 thousand volt coils and probably won't give you any benefit for older bikes (Second hand knowledge from a retro mechanic)

    The bike was designed to run originally of "93" octane fuel in japan at the time. But it's very hard to compare fuels only on octane rating.

    Sent from my SM-G900I using Tapatalk
     
  19. GreyImport

    GreyImport Administrator Staff Member The Chief Contributing Member

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    Start with 91 .... run a whole tank , then fill with 95 and see if theres any difference.

    98 is for people with too much spare money.
     
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  20. Damus

    Damus She is a BEAST and riding it is comparable to sex Dirty Wheel Club

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    yeah 95 is probably looking like the best option
    Edit: in Sydney anyway, pretty much all of our 91 is 10% ethanol.
     

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