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  1. P

    Antifreeze leaking through the Leg A1

    Mercruiser 190, 470, 224 cui 1986 engine 3.7 L I replaced the riser with brand new, gasket and all, torque 55 ft/lb. The manifold is good, dry. No antifreeze in the oil. The heat exchanger is tested good, no holes. When refilling with antifreeze, when it is filling the riser reservoir, it runs...
  2. P

    Cabin Heater

    Any ideas how to add FW heater to a Mercruiser 470?<br />Thank you.
  3. P

    Cabin heater using RW??

    Mercruiser 470 with A1.<br />Is it possible to cut in a small heating radiator into the RW flow to heat the cabin when engine runs?<br />The problem is if the impeller will be able to push enough water thru it for the FW cooling?<br />Did anyone tried that?<br />Thank you.
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