Here we go with the latest progress report.
Since removing the radiator, Iâ€™ve machined up a cover plate to go on the engine that will allow the use of an external cooling tank. This cover plate has a thermostat on the hot-out side that will open at 195 degrees. This will allow the engine to warm up a little faster and stay at a good temp range for running.
Top and bottom views of the engine plate and thermostat housing (note the space machined for a standard automotive-type thermostat):
Hereâ€™s a close up of the engine plate mounted up, low spots filled and dressed and ready to paint.
The cooling tank is designed to mount on the side of the pump tower above the engine and use thermo-siphoning to circulate the water. The hot side inlet has a tube that reaches about three inches up into the cooling tank and the cool side inlet has a tube (see bottom of engine plate above) that will encourage the cooler water into the lower sections of the water jacket around the cylinder. The hot side feed hose to the cooling tank is 1-Â½â€
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