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1972 6 HP Johnson - What are the compression specs?

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  • 1972 6 HP Johnson - What are the compression specs?

    Folks, I'm looking at buying a 1972 Johnson 6 HP.

    I swear I've searched this forum and online, but I cannot for the life of me find somewhere that has the specs for compression.

    Can someone please tell me what the specs should be and if possible pls give an online source as I've had to ask this question before about another motor.

    Thanks.

    Grouse

  • #2
    Re: 1972 6 HP Johnson - What are the compression specs?

    Nor will you find one, they really didn't publish a "spec" sheet for compression numbers. I'd expect 80+ and close on both cylinders to be good, great would be 100+, 50 and lower may have some issues.
    sigpicSignature- If you have fuel and spark- Have you checked compression?

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    • #3
      Re: 1972 6 HP Johnson - What are the compression specs?

      Appreciate the reply, thanks.

      Grouse

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      • #4
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        Re: 1972 6 HP Johnson - What are the compression specs?

        Originally posted by The Famous Grouse View Post
        Appreciate the reply, thanks.

        Grouse
        And they should be balanced....+/- 10% of each other....
        You do not need a parachute to skydive. You only need a parachute to skydive twice.

        I don't belong to an organized political party. I'm a Democrat. (Will Rogers)

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