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Intake cam pitted. Should i try yoshi st-1 camshaft

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  • Intake cam pitted. Should i try yoshi st-1 camshaft

    So i was doing a valve adjustment on my zzr1200 and found one of the intake cam lobes has some pretty bad pitting on it. So far the only used cam i can find is a set with valve springs on ebay for 900 bucks. I did find that i can still get my camshafts redone to the yoshi st-1 specs. Has anyone here installed those cams? And if so was the hp boost worth the cost?

  • #2
    No worries Ian. Has happened to many of us and no issues.

    The cam pitting issue is infamous on the ZZR. All kinds of posts and discussion here on the site. Just search "cam pitting" and plenty of info will pop up.

    However, if you want to add new cams for HP feel free to do so.
    I have neither the time,or the inclination, to explain myself to a man, who rises and sleep under the blanket of the very freedom that I provide, and then questions the manner, in which I provide it. I'd rather you just say 'thank you' and go on your way.

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    • #3
      Kawasaki Australia repaired my pitted cams at their cost, on my ZZR1200 and ZRX1200, quite some years ago. No issues since.
      That said, I think that you can continue using your cam without any problems. It is only one lobe, and the "meat" of the lobe is still good enough to push that particular valve down.
      Just my thoughts.
      I suffer from kleptomania. When it gets bad, I take something for it.

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      • #4
        My 02 has a slight pit on a few. Not worried. Also no "porous head" like was suppose to be an issue
        on early 02's. The cams being slightly pitted is no issue. It still has a flat contact area.
        "If it ain't broke, don't fix it...
        but sometimes it just needs a mod"

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        • #5
          I would bet that 90% of the early model ZEDs are still running today with pitted cams and no issues. I would leave alone. My 03 has pitted cams and still runs fine at over 100K miles.

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          • #6
            Yep. The ole girl still looks and runs great. Coming up on 17 years old.
            Ain't got a whole bunch of miles but that's a good run, still reliable
            as hell and hauls ass. I'll probably have to buy another everyday vehicle
            before I can get another bike, but the ole girl is here to stay.
            "If it ain't broke, don't fix it...
            but sometimes it just needs a mod"

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            • #7
              thanks for the response guys, yeah for the 2500 i put into this bike its running strong and just hit 29k miles, unfortunately it also has the porous heads for the number 1 spark plugh hole but i figure some extra dielectric grease will work fine. im going to just finish adjusting the valves and check on it in a few thousand miles

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              • #8
                Ar you seeing coolant in the #1 spark plug well?
                I suffer from kleptomania. When it gets bad, I take something for it.

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                • #9
                  Yeah, just a slight amount...maybe a tsp in the year ive had it

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                  • #10
                    Maybe not even that much just a slight amount of rust and moisture i have seen on the spark plug wire.

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                    • #11
                      That doesn't seem like "porous head" to me. It may just be a bit of moisture getting past the seal at the top. I always give a bit of an extra push on the plug caps to make the seal seat better.
                      I also thought that only some 2002 models were affected by that.
                      I suffer from kleptomania. When it gets bad, I take something for it.

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                      • #12
                        U might be right, it doesnt seem to pool up at all. I do need to find a set of plug wires for a zzr i ended up using a spare from my v65 sabre when i had a crack in the insulation on one (#4 thats bone dry)

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