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Thread: 85 zx600 ninja

  1. #11
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    Nessism is offline Forum LongTimer GSResource Superstar
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    Why do you have to remove the clutch basket?

  2. #12
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    To get to the right side bearing retainer plate screws, Those and the oil pump screws. I got a way to lean the bike almost to a 45 angle and just reach in and jump clutch off the primary chain.

    EDIT... I would be removing it anyways because yu know those steals and fibers are fused together and need pried apart.
    Last edited by chuck hahn; 01-10-2021 at 09:00 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.

  3. #13
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    Quote Originally Posted by chuck hahn View Post
    From what i can find it seems i can do the starter clutch just like i did it on my 83 KZ750 L3. remove clutch and basket, drop oil pan, and remove secondary shaft. Starter clutch "SHOULD" drop out the bottom. Any input on this guys?
    From memory they're the same layout. But I'd count it as a bench job. IMO too much potential to lose a spacer or a roller from the secondary shaft bearings.
    But hey, if you've done it once....

  4. #14
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    Yeah i did the KZ a few months ago. Ended up that one of the plungers that goes over the spring stuck in the hole causing the clutch to fail. Whole deal only took an hour and a half.
    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. #15
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    Chuck I think those are due for a huge jump in collectablity, and vintage race popularity.
    I've been riding my 87 CBR600 for 2 years and love it.
    "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

  6. #16
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    I found a few discussions on the soft valves issue by doing google searches. From what ive uncovered the estimated bad engines were somewhere around the first 1000 to 1500. Least ive got something to look at next time i go over to my buddies place. IM about 80/20 on pulling the trigger.
    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.

  7. #17
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    I've had to do several Ninja 600 top ends. And,if this bike has had a" Top end" done, you better hope they didn't just grind the valves. That would remove most of the rest of the hard plate and make things way worse. Only real fix is a new set of valves. On one 86 Ninja 1000 I worked on ,one intake valve had pulled completely through the seat.

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

  8. #18
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    Quote Originally Posted by chuck hahn View Post
    I found a few discussions on the soft valves issue by doing google searches. From what ive uncovered the estimated bad engines were somewhere around the first 1000 to 1500. Least ive got something to look at next time i go over to my buddies place. IM about 80/20 on pulling the trigger.
    I'm not sure about that. I saw a whole lot of them. Both from 85 and 86. If that number came from Kawasaki I'd be very suspicious. Remember, they were desperately trying to cover their asses. Apparently their main supplier of valves screwed up. Took awhile to discover the extent of the problem. By that time there were a lot of bikes out there.
    I'm not saying to not buy the bike. If I ever come across a good one ill snap it up. But I'd plan on doing the head 100%

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

  9. #19
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    On a related note, my friend had a 1986 Ninja 250. It had the bad valves. It got progressively harder to start as the valves sank into the seats. So he had his son tow him and tried to bump start it. Backfired through the intake and set his airbox on fire. He was lucky to get it out. That was another one I had to fix.

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

  10. #20
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    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.
    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.

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