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Type: Posts; User: dlomshek

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  1. Replies
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    Great work on mocking-up a single cylinder head segment to test.

    Really look forward to seeing flow numbers.
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    Software

    There is another major CAD software "out there" CATIA. It is the heavyweight software of the aerospace world, also used by many automobile companies (Mercedes). I do a lot of CAD design work and in...
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    Attached Buick 320 Head Gasket File

    Attached is a Buick 320 drawing of the head gasket. This is a .STP CAD file that can be opened by virtually any CAD software. Oops, looks like this file type isn't allowed to be sent. Dang, I was...
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    Double vs Single cam

    Went with the single cam design as these old long stroke/long rod engines are not going to turn 7000 rpm or so.
    No need to spend the money on a high rpm engine if the lower end blows at maybe 6,000...
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    More on Straight head Design

    Attached find another 320 CI inch straight 8 head I have been working on. This is a new push rod head with parallel valves similar to the original design except that there are 8 individual intake...
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    New cylinder head designs for Straight 8

    Several years ago there were posts concerning the need for a new design/better breathing head for the old straight eights. This intrigued me as I teach Computed Aided Design (CAD) in an Engineering...
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    Beautiful work!

    Thanks for the updated site. Beautiful bracket work Jyrki! It's great to see the work of a craftsman. I came from the aerospace world so can really appreciate what you've done.

    Dave Lomshek...
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    Injector type

    Are these injectors of the Piezoelectric type? I just logged on their site and it doesn't state the type of activation. The latest modern types are; they were developed by Siemens and have the...
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    Counteracting only 4 siamesed intake ports for FI

    If you use a special camshaft that allows the exhaust ports to now function as intakes
    you might get a much better solution. A potential problem would be the size of intake valves you would be able...
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    Just another thought. For street use I thought...

    Just another thought. For street use I thought about using 8 Mikuni constant velocity carburetors. It's easy to over-carburate street jobs so that when you step on the gas, at low revs, it just...
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    Not sure what you mean by "behind the drilled...

    Not sure what you mean by "behind the drilled hole". Do you mean holes that drill all the way through the part, like into the coolant area in engines?

    When I drill and tap holes I don't put...
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    More updated head design pictures

    Here are the latest head redesign shots. The top of the head is not open it's just that I have the CATIA settings of transparent so you can see the cross-flow port layout.

    On another topic,...
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    This latest work is for a pushrod engine. The...

    This latest work is for a pushrod engine. The OHC drive would be great but is a major deviation from the original layout. The OHC would require a new drive up the front of the engine (possibly...
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    Attached is the latest iteration of my 320...

    Attached is the latest iteration of my 320 Straight 8 cylinder head, It still uses parallel valves but has been reworked as a cross-flow unit. I am exploring the possibility of totally machining...
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    Here's a new combustion chamber shape with valve...

    Here's a new combustion chamber shape with valve locations more amenable to pushrod activation. Still just playing around with chamber shapes and valve locations. For the present I'd like to stick...
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    So far I haven't decided if it's worth the effort...

    So far I haven't decided if it's worth the effort to go all the way to OHC or not. At this stage I'm just exploring options and doing a lot of thinking. Pretty soon I probably need to buy a complete...
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    Another photo of some straight 8 head design

    Here is another shot of some of my tinkering with a new straight 8 320ci cylinder head.

    David Lomshek
    Pittsburg, Kansas
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    Been doing some str8 8 design work

    Lately I've been thinking a lot about some posts concerning the need for a new cylinder head design for the 320 ci straight eight.
    Attached is a starter drawing of a cross-flow head with individual...
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