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  1. C

    Bad u-joints????

    I just replaced my impeller on my 70's 165 I-6 MC-1 and now when i rev it above 2000rpm there is fast clicking noise that comes from the out-drive. The clicking gets faster or slower based on the rpms. I had the drive in the trailer position and when I lowered it about 3/4 the way down the noise...
  2. C

    Which outdrive do I have

    I have read through the sticky's on identifying my outdrive and after reading so much info on this forum things are starting to jumbled in my head..... :confused: Early 70's Mercruiser 165 I-6 (forgot to get serial number) Outdrive serial number is 5226297 I'm thinking it's an MC1 and wanted...
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    Random over heating

    Hi All, I have a 1970 (ish) Caravelle Tri-hull with a Merc 165 I-6 outdrive. After sitting for a couple seasons I decided to get her up and running this year. After changing the oil and gear oil I put muffs on it and got it running. Needless to say it started overheating. I figured it was the...
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