Gray on Bravo upper units

Discussion in 'Sterndrives' started by IMP-ish, May 29, 2013.

  1. IMP-ish
    Joined: Jan 2011
    Posts: 389
    Likes: 9, Points: 18, Legacy Rep: 150
    Location: united states of america

    IMP-ish powerboater

    Looking at photos of a boat. What do you make of this gray on the upper units of the Bravo Drives?
     

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  2. gonzo
    Joined: Aug 2002
    Posts: 15,882
    Likes: 1,256, Points: 123, Legacy Rep: 2031
    Location: Milwaukee, WI

    gonzo Senior Member

    Since you are running a shower cooling system, this is probably a high power installation. They may be overheating. Also, hot salt water is corrosive and that may also be the cause.
     
  3. IMP-ish
    Joined: Jan 2011
    Posts: 389
    Likes: 9, Points: 18, Legacy Rep: 150
    Location: united states of america

    IMP-ish powerboater

    It's not my boat. I saw it on the internet and my first reaction was I don't like the look of that gray. Heat is what I thought too. Don't know if it's overheating or if that happens in some water and is normal. Notice no discoloration where the mercruiser logo is or below that. Engines are stock 502s. Has anybody seen drive showers discolor an upper like this before? I've seen mineral stains on a drive before. Those were more like defined streaks going from upper all the way down the sides.
     
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