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  1. #31
    Join Date
    Nov 2006
    Posts
    604

    Default Re: Best way to avoid engine issues when using at low speeds

    wow .. lots of experience coming out here.
    I believe the acquired wisdom is that engines are not really designed to run on tickover or very low RPM and it seems to follow that powerful ones are designed to 'work'.
    Hopefully you are able to get your engines to correct running temperature. The last posting caught my eye as this is exactly what I do. On my VP 280 outdrives I use 15x17 props for River Thames non tidal cruising and 16x21 for salt water. I found this to be very satisfactory for over past 15 years.
    I can change them quickly enough standing in some shallow water in my marina.

  2. #32
    Join Date
    Feb 2002
    Location
    Home - Midlands, Boat - South Coast
    Posts
    7,238

    Default Re: Best way to avoid engine issues when using at low speeds

    Moor up somewhere where propwash will cause no problem, then put one engine in forward, the other in reverse and gradually open up the throttles to 2000+ rpm, being careful to balance forward and astern propulsion, and leave them that way for a few minutes.. I’ve seen it done, but never tried it myself.

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