Help Engine numbers - ZXR250

Discussion in 'Kawasaki 250cc In-line 4's' started by Unkepttoenails, Oct 1, 2018.

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  1. Unkepttoenails

    Unkepttoenails Demented

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    Hi guys sorry if this is stated somewhere but I am at a loss as to what engine this is , it's in a c1 frame as far as I know but I can't tell what engine it is any help would be great .

    eng number.jpg

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    Unkepttoenails, Oct 1, 2018
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  2. kiffsta

    kiffsta Senior Member

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    That is an A motor engine number , c motors start with zx250c
     
    kiffsta, Oct 1, 2018
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  3. Unkepttoenails

    Unkepttoenails Demented

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    Kiffsta it says on impex the A and B2 models have the AE on the code this is where my confusion stems from as from what I know the B2 engines are special aren't they ?

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    Unkepttoenails, Oct 1, 2018
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  4. kiffsta

    kiffsta Senior Member

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    @sharky might be able to help, he has amassed plenty of info on the b models
     
    kiffsta, Oct 1, 2018
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  5. Unkepttoenails

    Unkepttoenails Demented

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    Ah thank you very much ,I'll see if he replies some time hopefully . It would be super if it was a b model engine even though the chance is so slim

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    Unkepttoenails, Oct 1, 2018
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  6. Frankster

    Frankster Grey Pride...Adventure before Dementia Staff Member Premium Member Ride and Events Crew

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    @sharky can confirm if it's a special B engine, but every A engine I've ever had has always been an ZX250AE engine. I think because your engine number starts with 'ZX250AE01' it might make it a B2 engine.
     
    Frankster, Oct 1, 2018
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  7. sharky

    sharky Well-Known Member

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    That is an A or B model, but unfortunately the SP models are identified through frame numbers not engine numbers & yours is in a C model anyway, with most bikes who knows if the motors have been transplanted at some earlier stage in life. All standard A & C models frame# starts with a 0, the B1 B2 & D models frames start with a 3, so check near your headstem for a 3 people. 20180103_132510.jpg B1 models frame# 300001- B2 frame# 301501- D1 frame# 300001-, the one above would be a B2. The 1-3rd gear ratios are different, I haven't looked to closely at that,yet, but that would be the indicator to look for in the gearbox.
     
    sharky, Oct 1, 2018
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  8. maelstrom

    maelstrom LiteTek Staff Member Premium Member 250cc Vendor Contributing Member

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    @sharky
    Maybe you could make a thread about this and Mr @GreyImport could sticky it. Then the info about the SP models could be accessible and not lost. :)
     
    maelstrom, Oct 1, 2018
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  9. Unkepttoenails

    Unkepttoenails Demented

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    Ah thank yous all for the information , as for now I shall plug away getting the bike running . The previous owner didn't seem to know how so I have to unfu*k it haha but at least I know what I'm working with now

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    Unkepttoenails, Oct 1, 2018
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  10. Unkepttoenails

    Unkepttoenails Demented

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    Would be really cool to see the difference in the gearboxes if the ratios are much different .would be alot of work to determine if it's a b engine or not unfortunately

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    Unkepttoenails, Oct 1, 2018
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  11. kiffsta

    kiffsta Senior Member

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    Aren’t the carbs on the b model cvkd32’s and cvkd30’s in the standard zxr ? Surely that would be a “tell”
     
    • Agree Agree x 2
    kiffsta, Oct 1, 2018
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  12. GreyImport

    GreyImport Administrator Staff Member The Chief Contributing Member

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    ab model specs.png ab model specs 2.png
     
    GreyImport, Oct 1, 2018
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  13. Unkepttoenails

    Unkepttoenails Demented

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    Is the measurement of the carbs the diameter of the throat ?

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    Unkepttoenails, Oct 1, 2018
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  14. banner001

    banner001 Well-Known Member Premium Member Contributing Member

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    I've got an A engine and 32mm carbs...it was a popular upgrade for more top end with a slightly loss of midrange.

    Gear ratios is the only really good way of being sure
     
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    banner001, Oct 2, 2018
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  15. GreyImport

    GreyImport Administrator Staff Member The Chief Contributing Member

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    @Frankster

    Ive just been looking at the old rego papers for the ZXR and this is the engine number :idk:

    ZXR engine number.png
     
    GreyImport, Sep 15, 2019
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  16. Frankster

    Frankster Grey Pride...Adventure before Dementia Staff Member Premium Member Ride and Events Crew

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    Oh, that's an A engine. And, it's an early one too. Check what engine number is actually on the engine.

    What numbers are on the TCI? 21119-????

    Should be okay, I can jet the carbs to suit whatever it's running.
     
    Frankster, Sep 15, 2019
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  17. GreyImport

    GreyImport Administrator Staff Member The Chief Contributing Member

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    Yep but its been opened and resealed ... badly

    Lucky I looked so if I order gaskets or wateva for the motor they are different from the A to C ?

    ZXR TCI.png
     
    GreyImport, Sep 15, 2019
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  18. maelstrom

    maelstrom LiteTek Staff Member Premium Member 250cc Vendor Contributing Member

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    Yes, measure on the engine side is easiest.
     
    maelstrom, Sep 15, 2019
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  19. GreyImport

    GreyImport Administrator Staff Member The Chief Contributing Member

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    engine number (Small).png
     
    GreyImport, Sep 15, 2019
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  20. GreyImport

    GreyImport Administrator Staff Member The Chief Contributing Member

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    1991 92? C model frame


    frame number (Small).png


    frame plate (Small).png
     
    GreyImport, Sep 15, 2019
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