Talk Morgan Forums Morgan Sports Cars Maintenance & Servicing Water temperature of my 4/4

Hi dears, i realized that the water temperature of my 4/4 is normal during urban use, but when i go in highway at 120km/h after some minutes temperature goes up... what could be?
Radiator is recently cleaned, and the level of liquid doesn't go down...

Depending on year (ie. if it's a carb model)... could be running lean causing the engine to heat-up.

It's a 4/4 year 1971, engine Ford Kent.

Fabio, my 1967 4/4 does the same. 72 C in normal use, 85-90 C on the Autostrada. I just don't care and it never had any adverse effects. What carburettor(s) do you have? Weber?

Frank

Hi dear, in the Autostrada temperature goes higher than half... do you know correspondece between degrees and letter of the instrument C, N and H?
I don't remember, i have one double head carburettor... Weber or Solex...

Try testing the voltage at the gauge. It should be 10. If it's significantly higher than that the instrument voltage regulator has either broken or has a bad earth.

And check that the electric fan is blowing the right way.

My 4/4 doesn't have electric fan, only engine fan.

Fabio, the normal thermostat in Kent engines for warm countries opens at 70 degrees C. Perhaps yours is faulty; they don't live forever. N is about 80C, H is 100C. For winter driving there are thermostats with 80 and 85 C available. Some Morganeers in southern countries drive without a thermostat. It takes longer until the engine is warm but it doesn't overheat as quick.

With the Weber there should be no problem with weak mixture if it is the original type. Solex I don't know for sure. If my memory serves me right yours should be a Weber 32/36. You can change to 36/36 which will run fatter but also consumes more petrol. I have a 36/36 because the 28/36 for my car was not available anymore. I am now between 10 and 12 l/100 kms and the car doesen't run cooler than before

Frank

I'm running without Thermostat as i use car especially in summer.
I thought that H was 120-130 degrees...
Thank you dear!