Re: 6hp 1960’s rich at high speed

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June 26, 2015 at 2:10 pm #18950
johnyrude200
Participant

    I’m just going to bring it down. Are you bringing a boat? I’ll be sporting my really nice ’67 20hp johnson (2nd owner). I had a 6hp a month ago that had such high compression, you had to use the choke lever to shut the motor down.

    This 20hp, I measured at 150PSI COLD – yes, I’m not kidding. And I obviously am doing these tests regularly on all these motors – haven’t seen even a 25hp much above 130-135PSI yet, so this one is a keeper!