Cummins Marine Diesel Repower Specialists Forums Cummins Marine Engines 2006 Cummins QSB 355HP annual costs and other questions….

  • Creator
    Topic
  • #11799

    Luke LeBeau
    Participant
    Country: USA

    Hey Everyone,

    I´m looking at buying a Tiara 3200. It is a 2006 and has 475 hours on the engines. These will be my first diesel engines and I was wondering what I should plan for annual maintenance costs? Also, should I be worried about the “marine age” of these engines? They are low time but have been in the salt water for 10 years. I plan on having an engine survey done, but from the sounds of it the oil and transmission samples don´t really tell the whole story. Sounds like I need to have the after coolers pulled and inspected also? I´m guessing this isn´t done in a standard survey? Any recommendations of someone who does this in the San Diego area?

    Thanks,

    Luke

Viewing 10 replies - 1 through 10 (of 10 total)
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    Replies
  • #11864

    Tony Athens
    Moderator
    Vessel Name: Local Banks
    Engines: QSB 6.7 550 HP
    Location: Oxnard, CA
    Country: USA

    Luke,

     

    It’s really tough to comment on an engine that I do not support…. All I can say is to be sure that you have solid support before you jump, and are prepared to have fewer choices & most likely  be paying substantially more for that support..

     

    Tony

    #11841

    Rob Schepis
    Forum Moderator
    Vessel Name: Tenacious
    Engines: 6BTA 5.9 330's - "Seaboard Style"
    Location: Long Island, NY
    Country: USA

    A proactive maintenance history AND life in fresh water, that’s some value there.  Even without the maintenance history, the freshwater boat is always worth a premium.  My experience is Cummins and Yanmar, maybe others will chime in with direct Volvo experience, or you could research elsewhere..  Also, depending on your level of DIY, be mindful of what local support you will have (or not have) as far as what engines to target (or avoid).

    #11835

    Tony Athens
    Moderator
    Vessel Name: Local Banks
    Engines: QSB 6.7 550 HP
    Location: Oxnard, CA
    Country: USA

    Luke,

     

    That’s why a typical survey is really not going to tell you what “really matters”….

    Tony

    #11832

    Rob Schepis
    Forum Moderator
    Vessel Name: Tenacious
    Engines: 6BTA 5.9 330's - "Seaboard Style"
    Location: Long Island, NY
    Country: USA

    Let’s put it this way and play the odds.  If they look like the prior photos and you have no solid maintenance history, the odds are they are shot.  If they look like these and are clean, signs of grease at the caps and fresh hardware odds are they are serviceable.  Make sense?

    Lower Cap_ServicedUpper Cap_Serviced

    #11831

    Rob Schepis
    Forum Moderator
    Vessel Name: Tenacious
    Engines: 6BTA 5.9 330's - "Seaboard Style"
    Location: Long Island, NY
    Country: USA

    Unfortunately no.  You asked what to look for without removal and disassembly….

    #11830

    Luke LeBeau
    Participant
    Country: USA

    Rob,

    So you are saying you can be fairly confident of the condition of the aftercoolers based on these external visual cues?

     

    #11826

    Rob Schepis
    Forum Moderator
    Vessel Name: Tenacious
    Engines: 6BTA 5.9 330's - "Seaboard Style"
    Location: Long Island, NY
    Country: USA

    Exterior inspection of the upper and lower cap to housing mating areas.

    Peeling/bubbling paint, corrosion?

    Are the bolts still “factory painted” with no tool marks?

    Rust/corrosion around the base of the bolt heads..

    Lower Cap_ConcernUpper Cap_Concern - Copy2

    #11824

    Luke LeBeau
    Participant
    Country: USA

    First off thanks for the advice.  So in a pre-purchase scenario how do I actually determine the condition of the aftercoolers? It doesn’t sound like an engine survey will be that detailed.  Basically the only way to determine true “marine age” is to disassemble the aftercoolers as an initial step and then assess from there? I’m just trying to determine how I do a worthwhile inspection when I can’t actually disassemble anything?

    Luke

    #11801

    Rob Schepis
    Forum Moderator
    Vessel Name: Tenacious
    Engines: 6BTA 5.9 330's - "Seaboard Style"
    Location: Long Island, NY
    Country: USA

    So your first diesel, then likely you will be paying someone (at least initially) to do your initial repairs and maintenance.  Therefore, in my opinion, what can pay dividends for you is to forget the “engine surveyor” and get a real mechanic who knows these engines.  He can can not only be your pre-purchase inspector but can also stay with you after ownership.  He can hopefully go through the engines as to what they will need done right away and he can price the parts and labor and that estimated cost can be part of your initial negotiations.

    The “hang-on” items – aftercoolers, heat exchangers, etc can all be serviced or replaced (but they don’t come cheap). What you really have to be mindful of is a safe exhaust that has been able to protect the turbo, exhaust manifold & exh valves.  Tiara does a real good job with exhausts, better than most builders, so you “should” be safe there…  The engine room is gonna be tight with a lot of gizmo’s, especially with that big riser coming off the port engine and the Westerbeke genset shoved in the middle back there….the access to the port shaft coupling is real tough.  But it’s the price you pay to have all the “big boat” amenities in a 32ft.  With the placement of the genset back there any leakage or spray from a non-maintained shaft seal (usually PSS on that boat) ends up in the electrical end of the genset – check that out carefully.

    The boat is a rock sold build but you do need to be mindful of the hull side and deck coring.  For as great a boat Tiara builds they were not known for great work when it came to installing hull side thru hulls, engine room vents, anchor locker drains and then like.  Watch for moisture penetration into the coring around those areas.  Below the waterline should be solid glass.

    These pictures could be the boat in question.  The resolution is not that good but enough to see the layout.  Seems like the port turbo has some “browning” (indicating higher load/heat) but the starboard does not.  Could be nothing but could mean a turbo was replaced.

    Good luck and keep us informed.

    32 ER (1)32 ER (2)32 ER (3)32 ER (4)

     

     

    #11800

    Tony Athens
    Moderator
    Vessel Name: Local Banks
    Engines: QSB 6.7 550 HP
    Location: Oxnard, CA
    Country: USA

    Luke, let me start by this……If you are new to this, listen to this extra closely..

    An engine survey done by the typical surveyor will tell you nothing that matters as to the engine that a quick test run would not tell you, as long as a competent person that really knows this engine is on board. ..

    Assume this———–Your  aftercoolers are “done” and may already be leaking internally.. The chances are less than 50-50 that they are not leaking/misting , and less than 25% that are even serviceable..

    Right there is a minimum $8000 bill if you hire out the labor.. The QSB’s are 1st class and have zero systemic issues other than what “Mother Nature” does to the seawater side of the engines, running weekly or sitting at the dock (which seems to be what has happened over most the last 10 yrs….This is not just a Cummins QSB, it applies to all colors of moderns engines in this class & type.. ..

    Your $$ and time, at this point is time could best be spent by you or someone you hire to go down to the vessel with a good camera and take 30-40 very good pictures of what all looks like in every corner and possible angle inside the engine room , and send me those pics.. Until a set of eyes like mine, or of my counterpart on the East Coast (Rob Schepis) sees what you are looking at (engine room wise), personally I would not waste your time on a typical engine survey nor even move fwd on the purchase….
    Remember, I am not trying to sell you anything—so be sure to put that into the equation as to how you move forward……..

     

    Tony

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