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Thread: What am I looking at, 'cus I have no clue..

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  1. #1
    Join Date
    Jun 2001
    Location
    Central Illinois, USA
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    4,343

    Default What am I looking at, 'cus I have no clue..

    Snagged off the Web, Folks!

    It said HD but looks a lot like a Chief I had..

    Is the cylinderhead 'bored' assembled and torqued?

    ...Cotten
    PS: Good trick!
    I did some Lycomings once't. No I didn't.

    PPS: Thanks in advance as always..
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    Last edited by T. Cotten; 04-07-2019 at 06:23 PM.
    AMCA #776
    Dumpster Diver's Motto: Seek,... and Ye Shall Find!

  2. #2
    Join Date
    Jan 2009
    Posts
    118

    Default

    Photo originates from the folks in Springfield.

    Attachment 24356

  3. #3

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    ID grinding of a cylinder bore, probably at a few thou taper.
    Mark

  4. #4
    Join Date
    Nov 2009
    Posts
    201

    Default

    Those are Powerplus cylinders. Single piece cylinder and head casting. Large threaded plugs screw in above the valves for access. This same design was used on the Chief through 1926, removable heads came in 1927. The Scout used the same design but went to removable heads in 24 or 25 I believe.

  5. #5
    Join Date
    Jun 2001
    Location
    Central Illinois, USA
    Posts
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    Default

    So the heads are integral!

    (Like Lycomings...)

    It made me think they were bolted on for fastener stress distortion, but the early design eliminates all that.

    Many thanks to Everybody,

    ....Cotten
    PS: Honing a taper is tedious!
    AMCA #776
    Dumpster Diver's Motto: Seek,... and Ye Shall Find!

  6. #6
    Join Date
    Jun 2001
    Location
    Central Illinois, USA
    Posts
    4,343

    Default

    Here's another one that has me clueless, Folks!

    (Sorry its post '30, but the carb design is earlier.)

    What did Rollie Free have around his Schebler at Daytona?

    Thanks in advance of course,

    ....Cotten
    Attached Images Attached Images
    AMCA #776
    Dumpster Diver's Motto: Seek,... and Ye Shall Find!

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