Thermostat Housing

The thermostat housing is located on the left side of the cylinder block. It is secured to the block with 3 bolts and sealed with a gasket. The housing contains a wax thermostat which controls the coolant flow during engine warm-up. The thermostat and housing are supplied as a complete assembly and the individual components are not serviceable.

The thermostat allows rapid engine warm-up by preventing coolant flow through the radiator when the engine is cold. As the coolant temperature increases to approximately 82°C (180°F), the thermostat begins to open, the radiator coolant flow is balanced between the bypass and radiator up to the point where the thermostat is fully open at approximately 97°C (206°F). At this point maximum radiator coolant flow is achieved to provide maximum cooling.