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16V2000, the good, the bad, the ugly?

Discussion in 'Engines' started by Pascal, Apr 10, 2021.

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  1. Pascal

    Pascal Senior Member

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    Someone I know is looking at some 100/110 MYs and pretty much all of the candidates have 16V2000s 2002-2009 vintage and some are in the 3000 hours range. This with C32s just seem underpowered. Ability to cruise at 20kts is one of their criteria

    I m sure they re good engines but how are the maintenance costs, especially the 4000 hour service

    just doing some preliminary research at this point so haven’t called any local dealers for the estimates yet

    also, what is the Mxx designation I see on various MTUs? Different power rating or just evolution of the design like C32, C32 Acert, C32B ...
  2. Jdow

    Jdow New Member

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    The maintenance schedule is more simplified than man or even cat. I’ve been maintaining a pair for 3 years now. Only had very minor issues with a couple sensors and 1 fuel manifold leak. Great engines in my opinion. Smooth, relatively quiet, not terrible to work on and no smoke within a few seconds of start up. Struggling to attach a pic of the maintenance schedule. Message me an email or phone number I’ll send it
    And the m designation is the evolution of the series.
  3. AGP22

    AGP22 Member

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    I can't tell you about the 4000 hour but I can tell you about some unexpected stuff on low hour engines.

    The Mxx refers to some kind of variant of the basic 2000 series (which really means 2000 cc per cylinder). I have M91 V16s, twin turbos (sequential), rated at 2000 HP. The M93 is newer, has 3 turbos, and puts out around 2400 HP. The M94 is even newer and does 2600 HP. The M90, is older and puts out around 1800 HP.

    My engines have a bit under 600 hours and sat for several years with no preservation and very little maintenance. I have replaced most exhaust elbows by reinforced ones (the old ones tend to crack) at about 4K a piece including work, one exhaust turbine housing (cracked) same approximate price, two crossover elbows (eroded) same price for both, one main cooling pump (about 6 k), and an oil heat exchanger (about 3K). I also had an MCS repaired (at 3K, cost 25% of the replacement part).

    Currently the engines are started at least once a month, oil is regularly changed (I use Rimula), and other maintenance program tasks carried out as per MTU recommendations. Preventive work needs to be carried out, but rationally.

    The boat goes out several times a year but usually short jaunts in warm summer Med waters (between 30 minutes to one hour each way) and most of the times cruising at approx 1900/2000 rpm eventually applying peak power for a few minutes. Always very carefully watching the EGTs. From experience, these engines can cruise on for hours endlessly at 2000/2100 RPM.

    Hope this helps.
    Last edited: Apr 15, 2021
  4. Pascal

    Pascal Senior Member

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    Thanks for the info. They re M91s and will be surveyed next week.
  5. Capt Ralph

    Capt Ralph Senior Member

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    Please keep us up. I'd like to learn more about these beast. Already learned a good bit from post #3.
  6. ArielM

    ArielM Senior Member

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    What are the operating coolant temps at 1900-2000? Does anyone know what temp thermostats they have? Assuming the 12v and 16v will be identical in this regard.
  7. Pascal

    Pascal Senior Member

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    During survey the 16V2000 M91s were running between 160 and 170. I thought it was low but the MTU guy said it is what they should be running at
  8. AGP22

    AGP22 Member

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    We usually see anywhere between 80 and 90c.
    More like 83/ 84
    I'll let you know the warning levels later.
  9. Capt J

    Capt J Senior Member

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    Yes, the MTU's run cool. I just bought parts for them. The Secondary fuel filters are ungodly expensive. Like $140 each and not that big......if you have the primary large metal canister fuel filter, it's a parker item and can be ordered elsewhere for 1/2 the price of what the dealer sells it for. Coolant is cheap and easy, a gallon of concentrate is around $50 and makes around 10 gallons of coolant.
  10. ArielM

    ArielM Senior Member

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    Warning level is 212. At 1850 rpm I’m at 181 f. I have 12v2000 trying to find out if that is normal or if my thermostats are 182 or 175? At 1650 rpm I’m at 173F.
  11. AGP22

    AGP22 Member

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    View attachment 92480
    I would say your readings are in line with mine. Normal to me.

    But cold sea waters will lower the engine coolant temperature for sure. See the picture taken in the winter.

    Attached Files:

    Last edited by a moderator: May 18, 2021
  12. ArielM

    ArielM Senior Member

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    ya for sure. I’m running in 82-84F water temps lol.
  13. ArielM

    ArielM Senior Member

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    What
    What rpm do you normally cruise at? I’m new to the 2000 series. I’m running around 1900 but 2000 might be optimal?
  14. AGP22

    AGP22 Member

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    Depending on seawater temp (and other weather conditions), I would cruise anywhere between 1800 and 2100 to keep the engines relaxed. Above that you might get some high oil temps or other alarms.
  15. mapism

    mapism Senior Member

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    Nice to see that also on a boat powered by a pair of MTU V16 engines you rely on an iPad for navigation...
    Configured in Italian, by the way. Am I not the only Belpaese citizen around here, maybe? :)
  16. AGP22

    AGP22 Member

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    Actually that was the iPad of the Italian Skipper who delivered the boat. :)
  17. mapism

    mapism Senior Member

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    Wise choice. Schettino was definitely an exception, rather than the norm! :cool:
  18. ArielM

    ArielM Senior Member

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    what are you transmission temps at like 1850-1900 RPM?
  19. AGP22

    AGP22 Member

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    I don't recall. You must be referring to the marine gears. I may check and let you know next time it operates. But it's a ZF 2555.
    Last edited: May 26, 2021