Raw water vs fresh water

Discussion in 'Newbie Lounge - NEW' started by Mcole1170, Aug 28, 2017.

  1. Mcole1170

    Mcole1170 Member

    Jul 24, 2017
    Long island
    2006 sundancer 280
    4.3 alpha
    hi all. Is fresh water cooled a real advantage in salt water? Does this mean longer life on the riser/manifolds? Looking at 280 sundancers and one has fresh cooled.. is the extra cost worth it
    Thanks in advance
  2. paulswagelock

    paulswagelock Well-Known Member

    Oct 25, 2010
    2018 SDX 270 OB 300 Verado
    Verado 300
    Most system are really half systems. So saltwater still goes through the manifolds. Regarding engine life, yes, the block will remain fine indefinitely since it only has antifreeze. The external components like the fuel module, power steering cooler, oil cooler, manifolds, etc do not see any gains in life expectancy. However, they are more readily changed out.
  3. hottoddie

    hottoddie Well-Known Member

    Jan 11, 2012
    Boston/Cape Cod
    1986 Sea Ray 390 Express
    Garmin 4212 Chartplotter
    Garmin 24 HD Radar
    Garmin GSD 22 Sounder
    454 Crusaders
    A friend has a 370 that is raw water cooled and been for sale for 2 years. The boat is immaculate and the price is right. It was a fresh water boat when he bought the boat several years ago and he flushes the engines every time he uses it. No one wants the boat because of the raw water cooled engines.

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