The fresh water system circulates a coolant solution of pure soft water and ethylene glycol antifreeze inside the engine to absorb engine heat. This coolant is then routed to the heat exchanger, where the heat absorbed from engine operation is transferred through the parallel copper tubes to the water in the seawater system.
1x #1 (HS-0173) Heat Exchanger Raw Water Outlet 1.75 in. $69.00. Subtotal $69.00. #1 (HS-0173) Heat Exchanger Raw Water Outlet 1.75 in. quantity. Add to cart. #11 (HS-2177) Raw Water Heat Exchanger Inlet Hose 1.75 in. not rated $ 49.00. Optional Hose Clamps. Heat Exchanger for Indmar 866055/866104 Fresh Water 5" Bundle For Non-Catalyst Exhaust Manifolds. Email to friends Share on Facebook - opens in a new window or tab Share on Twitter - opens in a new window or tab Share on Pinterest - opens in a new window or tab
The term Fresh Water Cooling also termed Closed Cooling can be confusing as compared to Raw Water or Open Cooling Systems, as these closed systems circulate antifreeze and not water. Marine Fresh Water Cooling systems are similar to the cooling system in an automobile however rather than a radiator they utilize a heat exchanger, and MerCruiser Sterndrive Cooling Systems for sale Mercruiser Heat Exchanger Reservoir Assembly 78094A3 V8 7.4 / 5.7 / 5.0 rear mou $324.95 A6e Mercury Marine 3.7L Mercruiser Motor Water Temperature Sender 15995 3.7
Reference Item I Thermostat Housing Mercruiser utilized a full flow thermostat housing that direct flow through the heat exchanger or through the bypass circuit at all times. This is a key feature of Mercruiser Cooling System in that regardless of the thermostat position, the engine always experiences 100% coolant flow. Mercury MERCRUISER (1985 AND BELOW) HEAT Buy OEM Parts for Mercury Outboard Parts by Year (Mercury, Mariner, Mark, Force, Chrysler, Sears, SportJet) Rigging Parts HEAT EXCHANGER KIT & FRESH WATER COOLING KIT Diagram
Depending on heat exchanger design and location this may or may not be possible to do with the heat exchanger installed. The best way is to do it with the heat exchanger removed so that it can be turned with the inlet down and let both water flow and the force of gravity help remove debris.
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