Re: What’s considered "Sustained High Speed?"

Home › Forum › Ask A Member › What’s considered "Sustained High Speed?" › Re: What’s considered "Sustained High Speed?"

June 25, 2017 at 5:30 pm #60307
David Stanton
Participant

    US MEMBER PAY BY CHECK

    If you idle along trolling a lot, don’t go to the colder high speed spark plugs, or they may foul after awhile while trolling. I agree with Fleetwin’s percentage comment. I’ve had to go one or two heat ranges colder on the plugs on 6 to 15 HP motors run on my grandson’s 8 foot hydroplane,but there, the motors run at RPMs they were never designed to go to.
    Dave