DieselBoost wrote:
without thermosthat cylinder head may overheated without warning...
What do you mean with that, why should the head overheat without warning, when
no thermostat is installed?
In my actual setup i have blocked the frontal water port (cylinder head - thermostat casing), to ensure that all water must flow through the uper water hose and therfore through the radiator. As i wrote earlier, i have no thermostat in this setup and try to control the temperatur with the water flow (speed of the electrical water pump). But because this did not work properly at cold ambious temperatures, whichs leads to far to cold engine temps, i have also sheduled to install an external thermostat valve in the upper water hose between the head and the radiator, to ensure that all water have to pass the stock temp sensor in the upper water hose flange, which is used for the temperature gauge in the cockpit.
Unfortunatelly i also have to state out, that my headgasket is blown since yesterday again. I have done a 1/4 mile test run in beginning of November and the micro controler of the pump decides to stop the pump for 10s during lift of, whichs means 10s full pull with 1.6 bar boost without any coolant flow, whichs therefore means massive overheating. After that, it puts out white smoke like a steam train, but after stopping the egine and cool it down for some minutes everthing seems to be ok until yesterday.
I am not sure what to do now, i mean it is clear what to do to fix the head hasket, but i am not sure what to do with the coolant system. For sure, i will reinstall a mechanical water pump and therefore have to reinstall a thermostat, but i am not clear about using the stock thermostat valve or install an external one in upper water hose.
Would be interessting to hear your thinks about that.
Best Regards
Alleslowbuged
P.S.
Here are three pics, whichs shows how i blocked the frontal water port.
