On the left is the pipe from the raw water pump. The opening we are looking through is the drain/anode opening. The light is shining on the matrix of small tubes that the raw water flows through (on its way to the exhaust manifold) that allows the absorption of heat from the internal engine water.
Bottom chamber of heat exchanger
by bob mitchell
Jan 8, 2023
On the left is the pipe from the raw water pump. The opening we are looking through is the drain/anode opening. The light is shining on the matrix of small tubes that the raw water flows through (on its way to the exhaust manifold) that allows the absorption of heat from the internal engine water.