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Thread: No blown head gaskets with this engine

  1. #1
    Join Date
    Apr 2002
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    Allentown, PA
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    No blown head gaskets with this engine

    This is an interesting design by SAAB. The heads and cylinders are cast as one piece so there are no head gaskets at all.

    They vary the compression by tilting the entire upper assembly.

    http://72.14.207.104/search?q=cache:...monohead&hl=en

  2. #2
    Join Date
    Jul 2004
    Location
    Toledo, Ohio
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    Interesting....hmm!

    That is one really neat design concept. And I would have to agree that it could eliminate headgaskets.
    The only issues I see with it is the complexity.
    Plus if you ever HAD to replace the head, oh baby $$$$$$$.
    Still a neat idea.
    Bill

  3. #3
    Join Date
    Apr 2002
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    As I see it, you don't need to have the variable compression aspect of the design it if you don't want it.
    You could do the same thing for a fixed compression setup thereby eliminating the complexity.

  4. #4
    Join Date
    Feb 2004
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    St. Louis, MO
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    anyone remember the ford 'flathead' engines... the head was cast with the block hence no head gasket. all one piece

  5. #5
    Join Date
    Apr 2002
    Location
    Caledon, Ontario ... CANADA !!!
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    7,561
    Flathead Ford V8s had cylinder heads, they were just flat casting though ... the valves were in the block, not the heads.


    cheers
    Ed N.

  6. #6
    Join Date
    Jan 2005
    Location
    Longwood, Fl
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    206

    1 pc block/heads

    Mercury outboards had a 1 pc block/head design. Dont know about other brands or even present outboards, but older versions did. Bolts that looked like head bolts were only to remove the water jacket cover over the heads. Sparkplugs stuck through a hole in the cover.
    YB

  7. #7
    Join Date
    Jun 2002
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    H-Town Tejas
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    2,891
    Quote Originally Posted by yardbird
    Mercury outboards had a 1 pc block/head design. Dont know about other brands or even present outboards, but older versions did. Bolts that looked like head bolts were only to remove the water jacket cover over the heads. Sparkplugs stuck through a hole in the cover.
    YB
    That's a 2 stroke though so it's not the same.

    If you have a 1 peice design then it adds complexity and expense to the parts and makes it really hard to modify. Haven't looked at the article but remember one in a Design fax I got about 6-7 years ago.

    Jeff

  8. #8
    Join Date
    Jan 2005
    Location
    Longwood, Fl
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    206

    2 stroke

    Of course its a 2 stroke--------!
    Simply pointing out that there are engine designs with one-piece block/heads. I dont see how valve/seats could be done in a one piece design though.
    YB

  9. #9
    Join Date
    Feb 2003
    Location
    Wichita, KS
    Posts
    1,653
    who cares about the headgaskets, that is an awesome concept for efficiency.

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