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Engine Concepts...

Discussion in 'Technical Discussion' started by karo1776, Aug 10, 2014.

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  1. Marmot

    Marmot Senior Member

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    Considering the sleeve would have to fit inside the 7 minute cylinder module and would probably cost as much to make while adding at least two more failure points, what is the point?
  2. olderboater

    olderboater Senior Member

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    I found his resume. It is Kerberos Solutions, not Kaberous. His website either was never built or was suspended according to the message if one clicks through again.
  3. kmb1949

    kmb1949 New Member

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    Concepts


    Yes, that is it. I misspelled this too.
  4. kmb1949

    kmb1949 New Member

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    What are the two additional failure points?
  5. Marmot

    Marmot Senior Member

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    You have to ask?

    Not to mention that at the phenomenal pressures you are talking about running, those liners will be ringing like bells and will probably be holed or cracked by cavitation erosion very quickly.

    Attached Files:

  6. kmb1949

    kmb1949 New Member

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    The reason I asked is, I thought you might be thinking of O-rings. I am thinking of a different approach. One is a press fit by heating the jug and freezing the sleeve and the other is casting the sleeve in the jug. Before you jump me for a previous post, where O-rings were mentioned, the context was past experience with o-ring failures. The press fir might occur before the jugs were machined. Which approach would you think would work best? O-rings, press fit or cast in
  7. kmb1949

    kmb1949 New Member

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    I am also thinking about using Evans Coolant. No cavitation, it will not pass an electrical current and it is biodegradable.
  8. Marmot

    Marmot Senior Member

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    If the object of this new design is to have quick change cylinders then why not just use a parent metal bore, save weight, save money, and save having to jump through hoops to reline a cylinder, if is even possible or practical. Make those 7 minute marvels too cheap to bother with.
  9. kmb1949

    kmb1949 New Member

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    You have the idea.
  10. karo1776

    karo1776 Senior Member

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    I think we need TO START OUT THE WEEK with a little "Une Île Tranquille" for this thread.

    https://www.youtube.com/watch?v=KK9yieLJLgk

    Oh, engines... well here
    I found a neat You Tube of a 12 cylinder engine...

    https://www.youtube.com/watch?v=3YfTtGCsiD8

    Back to the suggestion of the high temperature ebullient system.
    1. Simply is not for raw water cooling but for a use with a seawater to coolant heat exchanger system.
    2. It allow the engine to operate at a very even temperature situation without large temperature gradients in either the coolant or metal.

    I think the idea of the rigid bedplate with the crankshaft removable from the top is excellent... but perhaps out of date now-a-days. It is seldom the engine would be taken down that far... in practice. I have never been fond of these rebuild in place schemes... just better to remove the thing and send it out for rebuild at the factory where they are better equipped.
    My opinion is engines should be plug and play for their lifespans... just change the thing out.

    Although, I can guarantee I will not ever be doing it if I am paying the bills.

    And, I am pretty well smartened up now and will take my grandfathers advice... DON'T GO NEAR THE ENGINE ROOM. The only hot sweaty greasy hole he would enter was in port and wore the pumps!
  11. kmb1949

    kmb1949 New Member

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    With all due respect. If boats had zippers on them, that might be an option. Boats engine replacement is expensive and timely, even if you don't consider the cost of the engine. I remember a new 65 sport-fisher that was on it's maiden shakedown cruise and had an engine problem. Both V16s had to be removed and replaced. The issue turned out to be dirty crankshafts. After the cranks were machined, they were not cleaned properly and the metal cuttings cut the bearings to pieces. On one engine it seized and spun a main bearing. The cost to remove and replace the engines, I am told, was close to 400 thousand dollars. I am sure that that boat owner was livid. In this situation, I can imagine all sorts of law suits. John Kelly could make some money here. Smaller and lighter parts that can be carried out through small openings is the only approach that solves this issue. Cost is also a factor, with the engines themselves. Most people might be able to come up with 15 thousand for a rebuild but 60 thousand to replace an engine is a bust.
  12. Capt J

    Capt J Senior Member

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    With all due respect. I think now you are thinking too much and overcomplicating your engine. Wet liners with o-rings etc. The 92 series of DD's have wet liners with o-rings and they are responsible for a good amount of their failues. I also think press fit liners where you need to freeze the liner and heat the block are also making things way over-complicated for an engine touted with easy rebuildability in the boat. If you look at the dry liners in the 71 series of DD's. They are easy to change without heating anything up, freezing anything etc, and reliable. Same with going with very high coolant pressures. There's no shortage of raw water supply in boats to cool the coolant off via heat exchangers, no sense to over complicate that either IMO. I think the KISS aproach is the best in most cases.

    Man uses individual cylinder heads and they have a lot of advantages over a single bank head like CAT, it's a nightmare to get a C32 cylinder head into and out of the engine room for example. Easier to remove them from the boat (size/weight), easier to rebuild one cylinder or fix one head. But there is also a little more maintanence that goes with that, cylinder head bolts have to be re-torqued on a more frequent basis, more gaskets to leak (each valve cover), etc.
  13. K1W1

    K1W1 Senior Member

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    on what may I venture to ask?
  14. karo1776

    karo1776 Senior Member

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    I posted this somewhere in this thread... but

    Lookie... C32's being replaced as the owner just wants the latest and greatest...

    No big deal... heads no big deal... tiny door to get those huge engines through...

    And besides another chance to watch some engine porno... !!!

    https://www.youtube.com/watch?v=nEX8yLYL-mc
  15. karo1776

    karo1776 Senior Member

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    Engine videos

    Love these old Gardners.... Marmot is in severe deja vous and may have to be readmitted to rehab over this... sorry.
    First is the video of Sultana engine startup from that thread...
    https://www.youtube.com/watch?v=4Xd4hQ7KKH4

    Second is another Gardner but this is the 6LXB, 180 hp version, wow been sitting around for at least 40 years... starts right up.

    https://www.youtube.com/watch?v=mJU5wl2Lidc

    Here is the last of the factory...
    https://www.youtube.com/watch?v=WlL68PF1n9E

    And, I believe this may be the same model Marmot has as his avatar... just checking???
    https://www.youtube.com/watch?v=w9XxfpuUvs0
  16. karo1776

    karo1776 Senior Member

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  17. kmb1949

    kmb1949 New Member

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    Maybe I should clarify that the processes I am speaking of are done at the factory and not in the field. The cylinder jug comes with the liner in it. It is nothing but a switch out. Single light cylinder head and single light cylinder jug. All of the gaskets on the proposed engine are O-rings. Each cylinder is monitored individually and when needed it is replace as a kit with new o-ring gaskets.
  18. kmb1949

    kmb1949 New Member

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    Big engine room. Most don't provide this advantage.
  19. kmb1949

    kmb1949 New Member

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    Big engine room. Most engine rooms don't offer this advantage.
  20. kmb1949

    kmb1949 New Member

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    I am taking a seminar that you guys might find interesting. It is offered by a company called Equilibria. You take a test and the test reveals your E-Colors. You can take the test on line at no charge. Here's the link.

    [Link removed, thread closed]

    Find your PDI.
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