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ZXR 250 Back on the road

Discussion in 'New Members Say Gday' started by Kunal bakshi, Sep 29, 2016.

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  1. Kunal bakshi

    Kunal bakshi Active Member

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    Hi all.. my names Kunal..good to be here. not new to the zxr 250. Ive had it since 2007. Afew track days some interclub races but havent ridden for the past 6 years it has been on the battery charger in the garage :) . No mods except an RGV 250 shock and lots of duck tape. Anyways change in circumstances and i have now gotten it back on the road after an engine swap. Jets were clogged and rust in the carbs. Anyways after good clean and boiling the jets in vinegar and lemon juice,it seems to be running fine except for
    - seems to hit a wall in the powerband at about12-14k
    - sipping more fuel than i remember it doing when i used to ride it before.

    Any ideas? I am thinking it might be the old jets and theyre just not getting clean enough.
    Motorcycle spareswarehouse dont seem to have any in stock for carbs 1and 4.
     
    Kunal bakshi, Sep 29, 2016
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  2. GreyImport

    GreyImport Administrator Staff Member The Chief Contributing Member

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    GreyImport, Sep 29, 2016
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  3. Kunal bakshi

    Kunal bakshi Active Member

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    Hi thanks for the info. Jets are the right size but might check the airbox seals to make sure they havent moved while installing the airbox. I have ordered jets etc from motorcycle spares warehouse . They have updated their stock now.

    Btw cant seem to upload photos. Do i need a particular forum level for that ?
     
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    Kunal bakshi, Sep 29, 2016
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  4. GreyImport

    GreyImport Administrator Staff Member The Chief Contributing Member

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    GreyImport, Sep 29, 2016
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  5. Kunal bakshi

    Kunal bakshi Active Member

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    Okay size was the issue . : )

    img20160929_125503.jpg

    Btw ive booked into broadford for 22nd oct if anyone else is attending?
     
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    Kunal bakshi, Sep 29, 2016
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  6. GreyImport

    GreyImport Administrator Staff Member The Chief Contributing Member

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    Another thing to be wary of is the overheating reg/rec .... its a common problem on the C model



    Burnt Toast.jpg
     
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    GreyImport, Sep 29, 2016
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  7. Kunal bakshi

    Kunal bakshi Active Member

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    Can that cause loss of power at a particular rpm?
     
    Kunal bakshi, Sep 29, 2016
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  8. Linkin

    Linkin The Mechanic Premium Member Contributing Member Dirty Wheel Club

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    Can cause your battery to go flat or overcharge the battery and fry it along with other things like blowing globes and killing instruments. Visually check it, and then check the battery charging voltage. If it's higher than 13.8v then replace the R/R
     
    Linkin, Sep 29, 2016
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  9. Kunal bakshi

    Kunal bakshi Active Member

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    Okay.. i have check voltage at battery while revving the bike. It goes upto 14.35v and sometimes 14.6 ish
     
    Kunal bakshi, Sep 29, 2016
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  10. Linkin

    Linkin The Mechanic Premium Member Contributing Member Dirty Wheel Club

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    Definitely too high... replace the R/R ASAP.
     
    Linkin, Sep 29, 2016
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  11. Kunal bakshi

    Kunal bakshi Active Member

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    How high should it go ideally?
     
    Kunal bakshi, Sep 29, 2016
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  12. Linkin

    Linkin The Mechanic Premium Member Contributing Member Dirty Wheel Club

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    13.6v-13.8v is the sweet spot for modern AGM batteries. The service manual will state anything over 15v requires the regulator to be replaced, but that would be with an older style lead acid battery that requires maintenance.

    A new regulator will bring the charging voltage down.
     
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    Linkin, Sep 29, 2016
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  13. GreyImport

    GreyImport Administrator Staff Member The Chief Contributing Member

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    Where did u get that info?

    Charging System Test

    • Adjust voltmeter to DC volts (20 volt range).
    • Place voltmeter leads to the battery terminals. (positive to positive and negative to negative)
    • Start your motorcycle.
    • Bring engine RPM's up to approximately 3,000
    • Compare the voltage reading to the specification in your owner's manual.
      (Note:the voltage reading should be approx. 13.8 - 14.5 volts to properly charge an AGM battery.)
    http://www.yuasabatteries.com/faqs.php?action=1&id=30
     
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    GreyImport, Sep 29, 2016
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  14. Linkin

    Linkin The Mechanic Premium Member Contributing Member Dirty Wheel Club

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    I googled "Charging voltage for AGM battery" - AGM's are sensitive to overcharging and will not retain capacity if overcharged. Meaning they die early.

    The old lead acid jobs will start to boil and evaporate the acid if charging voltage is too high, but can be refilled with electrolyte or distilled water... no long term harm done if it's not lost too much fluid. When they sit below fully charged you get sulfating of the lead plates = battery will start to lose capacity and not take a charge, which is what kills your lead acid batts.

    Lead acid, sealed lead acid, absorbent glass mat, gel, calcium batteries, lithium ion and lithium polymer all have different charging and storage requirements.
     
    Linkin, Sep 29, 2016
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  15. GreyImport

    GreyImport Administrator Staff Member The Chief Contributing Member

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    Heres the ZXR RR output voltage which puts his in range .... and Ill bet our FZRs are running the same with those SSB AGMs , and for years without a glitch.

    rr zxr.png
     
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    GreyImport, Sep 29, 2016
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  16. sharky

    sharky Well-Known Member

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    Welcome aboard Kunal
     
    sharky, Sep 30, 2016
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  17. Kunal bakshi

    Kunal bakshi Active Member

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    Thanks for all the help guys!


    Btw planning to do the fork oil today not sure whats in it atm but manual says 5w. I weigh about 80kg do you think putting in 7.5w will damage the seals or not make the forks work at all ?
     
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    Kunal bakshi, Sep 30, 2016
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  18. my67xr

    my67xr Bike Enthusiast Staff Member Premium Member Contributing Member

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    It should be fine with 7.5W, changing it by 2.5 will just be a noticeable difference
     
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    my67xr, Sep 30, 2016
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  19. Kunal bakshi

    Kunal bakshi Active Member

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    Hey the manual doesnt say is the level measured from the top of the outer tube or the inner tube ??loll
     
    Kunal bakshi, Sep 30, 2016
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  20. my67xr

    my67xr Bike Enthusiast Staff Member Premium Member Contributing Member

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    I would think it's the outer tube, but i might be wrong
     
    my67xr, Sep 30, 2016
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