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Thread: Differential cylinder pressure tester

  1. #1
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    Default Differential cylinder pressure tester

    Just curious, what is everyone using for compression testing the CC340 with the 14mm Denso plugs?
    Dan Arnold
    KEUL

  2. #2
    Senior Member Springloaded's Avatar
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    Default Re: Differential cylinder pressure tester

    I took the guts out of a spark plug and welded the quick coupler to it.
    Chuck
    Chuck Kinberger
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    You can sit at home & hear the News or get out there & be the News

  3. #3
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    Default Re: Differential cylinder pressure tester

    Thanks Chuck. I do not have access to a welder but know I can buy an 14mm adapter.

    My question was more towards the make and model of testers as most descriptions of compression testers mention an 0.040 orifice that is required for various types of engines.
    Dan Arnold
    KEUL

  4. #4
    Senior Member Dan L's Avatar
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    Default Re: Differential cylinder pressure tester

    IMG_8189.jpg

    This tester has worked well for me. I turned a stub for the car-plug threads and slipped on an O-ring.
    Flying Carbon Cub EX #11 since 2011

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    Default Re: Differential cylinder pressure tester

    Thanks Dan. I have looking at ATS as they have a sale going on.
    Dan Arnold
    KEUL

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    Default Re: Differential cylinder pressure tester

    Quote Originally Posted by Dan L View Post
    IMG_8189.jpg

    This tester has worked well for me. I turned a stub for the car-plug threads and slipped on an O-ring.
    I'm going to try an OTC 5603. Looks like it will work

  7. #7
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    Default Re: Differential cylinder pressure tester

    Quote Originally Posted by Dan L View Post
    IMG_8189.jpg<br>
    <br>
    This tester has worked well for me. I turned a stub for the car-plug threads and slipped on an O-ring.
    <br>
    Last edited by lbell; 07-16-2020 at 04:56 AM.

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