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  1. K

    1990 57 Merc Broken Valve Seat Replace Repair

    I have a 5.7 Merc broken valve I have a 5.7 Merc broken valve seat in the # 8 cylinder. I have had conflicting advice on installing a oversized valve seat. Some say it will break again in 20 hours and others say it will be fine to do this. Has anyone had any experience with this and could give...
  2. K

    OVERSIZING A BROKEN VALVE SEAT

    I have a 5.7 Merc broken valve I have a 5.7 Merc broken valve seat in the # 8 cylinder. I have had conflicting advice on installing a oversized valve seat. Some say it will break again in 20 hours and others say it will be fine to do this. Has anyone had any experience with this and could give...
  3. K

    57 mercursier very loud metal clanking noise

    "I am a new comer and hope I c "I am a new comer and hope I can get pointed in the right direction. I have a 5.7 mercrusier that I just had rebuilt just over a year ago(burnt piston) and dont have but maybe 10 hours on it. I have had it out 4 times this year however the last trip I had...
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