8.1 Questions

Discussion in 'Newbie Lounge - NEW' started by crm-114, Oct 9, 2017.

  1. rondds

    rondds Well-Known Member SILVER Sponsor

    Oct 3, 2006
    Jersey Shore
    2001 380DA
    Merc 8.1s (2008)...Hurth ZF 63 V-drives...WB 7.0 BCGD (2013), Garmin 8208 & 740 MFDs, GMR 24xHD dome
    Bill, if you look at the 2001 380DA Owner's Manual and Parts Manual, you'll see that this boat came with log mufflers. That would make those waterlifts replacements. It could be that someone already blew something and had to have an engine rebuilt, which opened that owner's eyes and caused the change to the muffler system. Heck, for all you know these are replacement motors. I don't know if there's much difference btwn the HO and the regulars, but all Gen VI 7.4s had sea-water sucking tendencies. 260 hours is plenty of time for the problem to happen, and if the motors are original, that low usage pattern has left a LOT of sitting around time for any water to lay on the innards and cause rust and corrosion.

    I was the 4th owner of my boat. I don't know who replaced the engines - I only know when the were replaced. Can you get any info from the broker or previous owner? If you jot down the serial numbers of the engines you can see if they're sort of close numerically and you can call Merc and get the actual date of manufacture.
  2. billm1104

    billm1104 New Member

    Oct 14, 2017
    Boatless. Should be changed shortly
    we are going to do that at the survey. :)
  3. Fly'n Family

    Fly'n Family Active Member

    Sep 19, 2013
    TX / CO
    2002 Cruisers Yachts 3870
    2003 Boston Whaler Sport 130 w/40 hp Merc
    Twin 425hp Crusaders
    Water lift, log or ?

    Crusader 8.1HO 420hp - good set-up or one that can also have water ingestion problems?


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