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2002 50' Post w/ 10 cyl MAN 860hp

Discussion in 'Post Yacht' started by Soulstice, Apr 24, 2019.

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  1. Soulstice

    Soulstice Member

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    So I sold my 2001 Post 42 a few years back and have been waiting for my daughter to get big enough to get back into the game. I am currently looking at two boats. One of them is a 2002 Post with 10 cylinder MAN 860hp engines. Historically I would put 300-500 hours on my old boats every year running to the canyons but now I expect to be in the 100 hour a year range as I have some little ones and we will most likely use the new boat for cruising and light fishing.

    From other Post owners, how are these engines? I assume it is the same block as the 820hp version and the weight to HP ratio looks good. I am also looking at a boat with Detroit's. I have heard good and bad about MAN's but mostly good for the 10 cyl engines. It sounds like these motors are fairly efficient (50-55 GPH) and their maintenance schedule might be a little more reasonable? This boat just had the 1,000 hour service done at around 950 hours total. Going forward I have heard two stories for maintenance, one side says to just change the oil and do regular preventive maintenance especially with the seawater systems while the big service will be at 2,000 hours and cost ~$20,000. The other side says it is a $10,000 - $15,000 service every two years regardless of hours. What is the reality for those who have the 820hp or 860hp 10 cyl MAN's in their Post's?

    On a separate note, do many of the 2002's have the Gel Coat cracking issues? I was thinking if this boat does, I would consider that in the offer.

    Thanks for any help you can provide.

    Jay
  2. Seth Fisher

    Seth Fisher New Member

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    Jay, I've got an '99 50 for sale with MTU 8v138. Gelcoat issues, from what I recall were up to 2002/2003. I don't have experience with MAN, but what I've heard is they are a great engine, with the downside of the cost of regular overhauls. If you are only cruising, you'd probably get 5-10 years out of the boat without a major overhaul, but will have to address for the next buyer.
  3. C team

    C team Senior Member

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    I can't address the engine questions but I do know Post had gel coat issues in 2002.
  4. porthole

    porthole Member

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    Have you googled ‘man-grenades’ ?
  5. Soulstice

    Soulstice Member

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    I have, that is mostly the 1050 ‘s I believe. The 820’s and 860’s appear to be one of the most reliable engines from MAN typically going over 5,000 hours before overhaul with normal maintenance. There were some seal issues in the early generations that when fixed eliminated the issue.
  6. motoryachtlover

    motoryachtlover Senior Member

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    There was definitely an issue with some of the MANs. I was very reluctant to buy a boat with them. But the 820’s (I don’t think there is an 860) have been rock solid over 10 years of ownership. You do have to take care of them which is expensive but I think Man grenades has been overblown a bit. All of that being said at this point when I buy my next boat I would prefer CATs. I think
  7. Soulstice

    Soulstice Member

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    Yeah I can't find anything referencing the 860hp rating although the owner swears by it...The 820's seem like a really good choice in the 50's so long as some of the seal issues and other items have been addressed. I think if someone has got 1,000 to 2,000 hours already, serviced it, and survey comes back good, there is a good probability for a long life. The scary item is the reman cost if they do go as it is so much higher than CAT, DD, etc. This boat I look at also had the worst gel coat cracking I have ever seen (made my old 2001 42' look perfect) .

    At this point, considering the total cost of ownership, I am leaning towards a 46' Post with Detroit 6V92 DDEC 565hp as I know they have been well care for, parts are available, and servicing locally is reasonable. Good boat to get my girls back on the water and then decide on a 50 in the future if we want the extra space.
  8. PtJudeRI

    PtJudeRI Member

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    Most popular engine package for the Post 50 was the 820 MAN. Very reliable. Beau has them in his 50. Fastest package as well. My Cat 3406e will give me a 26kt. cruise, the MAN will give you 30?
  9. Capt Ralph

    Capt Ralph Senior Member

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    You may be talking about the same motor;
    860hp is the sales hp number, theoretical and rounded up hp at the flywheel.
    820hp is real hp at the propeller.
  10. Capt Ralph

    Capt Ralph Senior Member

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    It takes a good MAN shop to keep the owner happy.
    When you hear of a man-grenade within the last 25 years, I would point to poor/no service or poor/no local shop.
    MAN is good stuff, just needs a lil more care and expense.
  11. Capt Ralph

    Capt Ralph Senior Member

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    It takes a good brand shop to keep any brand owner happy.
    The old Detroit guys are getting older and no quality replacements steeping up.
  12. RT46

    RT46 Senior Member

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    I don't have a 50 Post, but if you read through the Post Forum owners of 50's with MANs seem very happy.
  13. Soulstice

    Soulstice Member

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    You make a great point. My gut was telling me that I needed to check locally for support of the Detroit 6V92 DDEC 565hp and I never followed up. Just called all the diesel marine companies locally that I or my marina have used and none are willing to support this engine.

    Back to the search for a 50
  14. Beau

    Beau Senior Member

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    20 glorious years with my 98 50/820 combo search me in the threads you'll see all my comments. With the 820's it the best production SF around, imo. Bayside diesel in Mystic are my guys!

    If the boat hasn't shown major gelcoat issues by now, it probably never will. I have a lot of hair line cracks, but not the raised and separating issues that the bad ones had.

    Sadly, mine will be for sale at the end of this season
  15. PtJudeRI

    PtJudeRI Member

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    Wha???? Why sell?
  16. Beau

    Beau Senior Member

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    Yeah, things change....
  17. RT46

    RT46 Senior Member

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    I want it!
  18. Soulstice

    Soulstice Member

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    Yeah Bayside is who I use as well and they are really great. They advised to go with the Man's and stay away from the DDEC's especially with such a lack of support. So onward to find a 50 with 820's in May.
  19. Beau

    Beau Senior Member

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    we had 2 fellow dock mates who had DDECS. They couldn't repower out fast enough. one replaced with Cummins, the other repaired both sides and sold!
  20. Capt Ralph

    Capt Ralph Senior Member

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    No, No, No..
    Don't say it's so.

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