drmini in aust wrote:
Simon, I don't see how you will get convection, with the thermostat closed the water pump is cavitating in a closed system, so the hot water will just rise and stay there.
Metros had no bypass hose here, but they had a sandwich plate and hose under the thermostat which achieved the same result.
oh well, maybe the thermostat is just opening earlier than normal because there's a lot of hot water in the head, but the water holes from the block to the head would be letting it circulate
another reason I'd like a bunch of temperature guage senders all over the motor - just to see where the heat is
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