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Thread: 85 zx600 ninja

  1. #21
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    I enquired about any valve work and it did have some valves replaced, lapped, and while t was apart it was honed and new rings installed. It ran and rode as it should until the starter clutch went South. Im gonna pull the trigger and clean the carbs and redo the clutch and see what happens.

    The only thing ill need for the starter clutch job is the triangular rubber dampers which isnt that big a deal. Kawasaki says they are still available so ill start there first. If they cant come through ill cruise Ebay until i have all 8 in hand.
    MY BIKES..1977 GS 750 B, 1978 GS 1000 C (X2)
    1978 GS 1000 E, 1979 GS 1000 S, 1973 Yamaha TX 750, 1977 Kawasaki KZ 650B1, 1975 Honda GL1000 Goldwing, 1983 CB 650SC Nighthawk, 1972 Honda CB 350K4, 74 Honda CB550

    NEVER SNEAK UP ON A SLEEPING DOG..NOT EVEN YOUR OWN.


    I would rather trust my bike to a "QUACK" that KNOWS how to fix it rather than a book worm that THINKS HE KNOWS how to fix it.

  2. #22
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    Dec 2020
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    Oofah. If they REPLACED the valves then you're good. If they lapped them, either you or the next owner is going to have a Sad.

    Mad
    83 GS750E
    2006 ZX14
    2004 KTM 450 EXC
    2001 Yamaha Big Bear

  3. #23
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    Dec 2020
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    Shingletown CA
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    On a somewhat related note, I was working on a friend's 87 Ninja 750. Did you know those things have a BELT driven alternator and that it's INSIDE the cases ? I didn't either until I found his broken. I figured out a way to change it working behind the cylinder head but it was touch and go.

    Mad
    83 GS750E
    2006 ZX14
    2004 KTM 450 EXC
    2001 Yamaha Big Bear

  4. #24
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    Mad. Supposedly it was a combo of "some" valves replaced and all lapped. I'm currently trying to find the superceded part numbers for the valves. That or has Kawasaki just replaced bad valves with known good ones and kept the same part number? Do you think it's possible that if this bike showed some obvious bad ones and some not being bad when it was opened up that the issue has been taken care of?

    Thing is was it just intake valves then? Just exhaust? Or a mix and match of both....know what I'm getting at?. Either way it was in fact running after the work had been done.

    And another question for the ninja officials....what all years used the same part numbers as the 85 600?. My thoughts are that if the 85 year was the only year with the problem but they used the same head/valves setup for multiple years then it stands to reason I could buy 86 parts fiche valves and put in the 85 head. Make a reasonably theory?
    Last edited by chuck hahn; 01-12-2021 at 02:29 PM.
    MY BIKES..1977 GS 750 B, 1978 GS 1000 C (X2)
    1978 GS 1000 E, 1979 GS 1000 S, 1973 Yamaha TX 750, 1977 Kawasaki KZ 650B1, 1975 Honda GL1000 Goldwing, 1983 CB 650SC Nighthawk, 1972 Honda CB 350K4, 74 Honda CB550

    NEVER SNEAK UP ON A SLEEPING DOG..NOT EVEN YOUR OWN.


    I would rather trust my bike to a "QUACK" that KNOWS how to fix it rather than a book worm that THINKS HE KNOWS how to fix it.

  5. #25
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    I think 85 and 86 share everything.
    "Thought he, it is a wicked world in all meridians; I'll die a pagan."
    ~Herman Melville

    2016 1200 Superlow
    1982 CB900f

  6. #26
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    Dec 2020
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    Quote Originally Posted by chuck hahn View Post
    Mad.. I've been thinking do the valves regardless. I'm trying to see what the superceded part numbers were for the replacements. That or any info on what all years are the same as the 85. To be certain is better than to believe it's been done. I'll also look at the engine number.




    Anyone know where I might find old service bulletins from back in the day?. I sure am leaning hard but would feel more comfy knowing I can buy the upgraded valves.
    I don't think you can get any of the bad valves anymore. They've been purged. Anything you can get now will be ok.

    Mad
    83 GS750E
    2006 ZX14
    2004 KTM 450 EXC
    2001 Yamaha Big Bear

  7. #27
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    I'm not sure but the bad valve we saw were always Intake. And like I said above, you can't get bad valves anymore. They made sure they were removed from the system. If it was me, and I couldn't confirm that all the Intakes, at least, were changed, I'd just replace all the Intake valves. That's what we did on my friends 86 ZX1000. I was so confident in that bike after I had repaired it, that the day after the work was done, we took it on a long trip. I ended up buying it from him. Never had any more valve problems.

    Mad
    83 GS750E
    2006 ZX14
    2004 KTM 450 EXC
    2001 Yamaha Big Bear

  8. #28
    salty_monk's Avatar
    salty_monk is offline Forum LongTimer GSResource Superstar
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    I'd for sure be looking to make money on the deal....

    1980 GS1000G - Sold
    1978 GS1000E - Finished!
    1980 GS550E - Fixed & given to a friend
    1983 GS750ES Special - Sold
    2009 KLR 650 - Sold - gone to TX!
    1982 GS1100G - Rebuilt and finished. - Sold

    www.agadisplay.com
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    TWINPOT BRAKE UPGRADE LINKY: http://www.thegsresources.com/_forum...e-on-78-Skunk/

  9. #29
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    Might not be too much left on the bone. Im assuming intakes and fork seals will need replaced. Tires are for sure junk. But i think its worth the save. But on the right day and right buyer who knows.
    MY BIKES..1977 GS 750 B, 1978 GS 1000 C (X2)
    1978 GS 1000 E, 1979 GS 1000 S, 1973 Yamaha TX 750, 1977 Kawasaki KZ 650B1, 1975 Honda GL1000 Goldwing, 1983 CB 650SC Nighthawk, 1972 Honda CB 350K4, 74 Honda CB550

    NEVER SNEAK UP ON A SLEEPING DOG..NOT EVEN YOUR OWN.


    I would rather trust my bike to a "QUACK" that KNOWS how to fix it rather than a book worm that THINKS HE KNOWS how to fix it.

  10. #30
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    Jun 2008
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    New Buffalo, Michigan 49117
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    I would hold my worries about the valves until after I adjusted the valve clearance and did a compression test.
    "Only fe' collected the old way, has any value." from His Majesty O'Keefe (1954 film)
    1982 GS1100G- road bike, body, seat and suspension modded
    1990 GSX750F-(1127cc '92 GSXR engine) track bike, much re-engineered
    1987 Honda CBR600F Hurricane; hooligan bike, restored

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