|
Yes - I put the fan in front of the radiator pushing air through - there isn't a lot of clearance between the engine and radiator even with the fan taken off the water pump. The 544 radiator is nice and square and the 15 inch fan reaches to all four sides. I even had to trim a little metal out from the top section of the nose to get it to fit. It is probably a little bit of overkill - your 11 inch fan should probably provide enough air movement.
Boilover occurs when the engine goes from working hard straight to being shut off. An example would be coming off the highway right into a gas station. The block and cylinder has a lot of heat energy still in it but once the engine is shut off the coolant doesn't circulate much - so localized pockets can start boiling. This isn't much of a problem with an expansion tank but old cars just have overflow tubes aimed at the ground. The mild boiling pushes a little coolant out, eventually lowering your coolant level.
As a side note - I've noticed my VR6 equipped VW Jetta has a small elctric coolant pump in addition to a belt powered mechanical one. This mostly seems to run when the engine is cold - not sure what function it is serving other than to ciculate coolant around the block and head when the radiator is shut off by the thermostat. Volvo's do this (at least on B18/20 engines) with a dual function thermostat. When cold they not only shut off flow to the radiator but open a bypass vent which allows the water pump to circulate coolant in a loop through the head and block.
|
