Reply To: Johnson HD 15

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March 11, 2024 at 7:28 pm #285821
Ken Marshman
Participant

    Compression in both cylinders is identically 65 psi.  Both held the pressure.

    There are a few score marks along the length of the cylinders walls.   Don’t see any waviness in the walls.

    I would assume 65 psi may be fine for low speed, but for higher not so good…???  So minimum—- hone the walls and new rings.

    Ken