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Timing Cover Gasket Leaking

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  • Timing Cover Gasket Leaking

    For some time now, I have been experiencing an oil leak at the bottom of the timing cover. I have included some photos. This is a 2002 ZZR1200. Is this paste like substance that seems to make up some of the engine block supposed to be there? I noticed this the first time that I took the cover off. I have replaced the gasket each time, included a thin coat of RTV, but, it still leaks.

    Also, notice the mounting hole on the left bottom. It has no threads. Comments please
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  • #2
    No paste like substance in mine ...
    Perth, Western Australia.
    “Be yourself; everyone else is already taken.” - Oscar Wilde

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    • #3
      I don't think that's how it comes from the factory... Is it some kind of resin? Maybe it was damaged in a crash and what you are looking at is the repair.

      I'd suggest that you fit the cover without a gasket and check for gaps. Is there a thread deeper inside the screw hole?
      "You don't get slower with age, you just get more cautious." Michael Rutter

      06 Ocean Blue ZZR1200, the coolest colour.
      99 Yamaha R1

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      • #4
        Thanks for the comments. There are no threads in the hole on the bottom left. A couple of months ago, I purchased a Chinese product, like two part metal adhesive, mixed it together after doing a complete cleaning of the affected area for the gasket mounting with solvent. I dried it well and put the two part metal adhesive on the affected area, the resin looking material. I squared the face, sanding until it was square and smooth. After I finished the prep work, I installed a stock gasket and the cover. The bottom of the gets moist but not wet. There has not been enough leaking to drop oil on the floor in this time. I have rode both hard and long distance, and no leaking. I think that I have fixed it.

        I still don't know what that material is. It is hard, and with the exception of the split in it (see photo) it has held up. I will continue to monitor it and make any repairs should it be warranted.

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        • #5
          Good news.
          Perth, Western Australia.
          “Be yourself; everyone else is already taken.” - Oscar Wilde

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