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MTU 10v 2000 vs V-12. reliable?

Discussion in 'Engines' started by johnnry, Mar 6, 2021.

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  1. johnnry, Mar 6, 2021
    #1
    johnnry

    johnnry Member

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    Hello all, i am considering a yacht with the 1396 hp V-10s.. 2008 year..Most engines of this HP are V-12.. However It is a faster low mass boat and wondering what people have/heard experienced about that 10 cylinder vs the usual 12 configuration..Thanks
  2. Capt Ralph, Mar 6, 2021
    #2
    Capt Ralph

    Capt Ralph Senior Member

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    I am of the old school. More displacement for similar HP usually last longer.
    However, to shoot my own comment down, The family of MAN engines have taken the HP ratings from their mechanical V12 and now producing similar HO in their FI V8s.
    Note the torque is down (Duh) but for the performance enthusiast, Tall reliable HP in these V8 is commentable.

    On the other hand, Mercury Outboards have always had smaller displacement per HP. IMO, this why you do not see many Mercs last long hours as long as a Yam.

    I'm not MTU savy. So I can not tell you if your MTU examples are mechanical or HP/Common Rail injected.

    Personalty, I still lean for the displacement making HP.

    1550CCED-90A5-4F91-BD9A-B1034B667A00.jpg
  3. Capt J, Mar 6, 2021
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    Capt J

    Capt J Senior Member

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    In a light boat with a fast cruise speed (where it maintains an even speed better) the high HP/less displacement and torque is fine. I am not familiar with the 10v2000's as they're a really rare engine that you just don't see too many and of all of the yachts I've run, I've only run 1 set of 12v2000's in all these years. MTU wasn't too successful with either series (compared to 16v2000s that you see in everything).
  4. johnnry, Mar 6, 2021
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    johnnry

    johnnry Member

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    Thanks gentlemen..the 10 cyl is uncommon ( btw mtu 2000s are common rail design)..just not sure if for the right reason..they save 500 lbs and needed space vs v-12 so a a good"theoretical" solution in smaller hi speed boats..its possible most of us just can't get past the idea of a v10 vs 12..5 cyl per side just doesn't feel right lol
  5. Capt Ralph, Mar 6, 2021
    #5
    Capt Ralph

    Capt Ralph Senior Member

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    MAN and MTU have been building their V-10s for a while.
    MTU has many models including theM72 & M94 lines that world wide have been a great success (per the company).
    If it does the job, well,, Then I would not be afraid of it.
    This coming from a guy still pushing 43 year old, V-12 Detroits.
  6. olderboater, Mar 6, 2021
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    olderboater

    olderboater Senior Member

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    Pacific Mariner 85' has MTU 10 V 2000's, 1500 HP and we've never had any problems. WOT 27 knots, cruise 23-24 knots, maximum decibel level of 60.
    CaptPKilbride likes this.
  7. mapism, Mar 7, 2021
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    mapism

    mapism Senior Member

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    The reason was the good old one that always drives boatbuilders choices, i.e. cost.
    The 1360hp MAN V12 was the last built upon the archaic OM400 series M-B block, before they heavily redesigned and strenghtened the crankcase, increasing the stroke (hence the displacement), eventually aiming at the 2000hp power node market.
    By that time, MTU already abandoned the M-B completely for their 2000 series, which was more modern but also more pricey.
    And spending 20 to 30% more for a MTU powerplant of similar power when very few (if any) boaters would have been willing to pay the difference, well, that was not exactly attractive for boat builders.

    BTW, with reference to what Capt Ralph said about displacement/power ratio, which is something I agree with, actually the displacement is slightly higher for the MTU V10 vs. the MAN V12.
    Not a meaningful difference, mind - half a liter or so, IIRC.
    But the number of cylinders is misleading, because each pot is larger in MTU (2000 series) vs. MAN engines.
  8. johnnry, Mar 7, 2021
    #8
    johnnry

    johnnry Member

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    Thanks for the input..olderboater,no difference in vibration at idle with the v-10s vs similar hp v-12s? Appreciate the feedback..
  9. olderboater, Mar 7, 2021
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    olderboater

    olderboater Senior Member

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    No vibration issues on mine. Of course, understand, our builder had quite a lot of experience in those engines in that boat.
    johnnry likes this.
  10. Capt J, Mar 7, 2021
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    Capt J

    Capt J Senior Member

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    I can't speak for the 10v2000's, but I've run a 62' express with MAN 1100 HP common rail V-10's and they run as smooth as silk at all RPM's......much smoother than the V8-1000HP and V8-1200 hp that replaced them.
  11. johnnry, Mar 8, 2021
    #11
    johnnry

    johnnry Member

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    Thanks all ,sincerely very helpful