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Looking at a 95 footer with Cats 3412e's

Discussion in 'Engines' started by Reginald, Sep 11, 2016.

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  1. Reginald, Sep 11, 2016
    #1
    Reginald

    Reginald New Member

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    Reginald Buckingham III of Bainbridge Island, WA
    Looking at a 95 footer with Cat 3412e's My online research says their expensive to fix. Most say their reliable.
    2200 hrs
    Anyone have these in their craft?
    TIA,
    RB
    Last edited: Sep 11, 2016
  2. Capt Ralph, Sep 11, 2016
    #2
    Capt Ralph

    Capt Ralph Senior Member

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    Ran a few. Keep the maintenance up and your foot out of them if their close to the 1400 hp tune.
    I don't recall any bugs with this inter-cooler but as with all Cat inter-coolers, inspect them every 2 - 3 years.
    You will probably have a big ZF clutch behind them, pretty solid if not abused.

    A thorough survey and owners records should guide you also.
  3. Pascal, Sep 11, 2016
    #3
    Pascal

    Pascal Senior Member

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    If they haven't been abused, they re just broken in :). I ran a 70 footer with 1400hp 3412Es for 8 years, starting at 1800hrs. Put 3500 hours on them. Besides routing service, the only part we had to throw at them was a couple of impellers each... Now with 5300 hours they don't even smoke on start up. To be fair probably half the others were at hull speed.

    1000 service was cheap especially compared to mans

    We cleaned the intercoolers a couple of time but they are not an issue on the 3412. That's on the c32 where the initial design had a number of failure. The 84 I run now has c32s and the first thing we did was upgrade the aftercoolers just to be safe
  4. Capt J, Sep 11, 2016
    #4
    Capt J

    Capt J Senior Member

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    Cat is now recommending replacing the aftercoolers every 6 years. The 3412s are very reliable and cheap to fix compared to anything else in that HP range. They are a 12 cylinder diesel after all. They run good and clean at all RPM ranges, and have lots of torque. They should be a 10,000 hour engine. As long as they survey well, I'd have no hesitations and they'd be my preferred engine in that vintage and HP rating.
  5. CapLady, Oct 3, 2016
    #5
    CapLady

    CapLady Senior Member

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    Back in Ft. Lauderdale!
    After running several yachts with these engines I'd second the above post. They were very reliable engines for me.