Hello pelicanite,
I am rebuilding my 1982 SC euro engine due to a broken piston. The engine is stripped out and I am checking and mesuring all the parts at the moment.
I checked the engine thermostat, I put it in boiling water and just before the water starts boiling the thermostat started to open the hole going to the radiator. So that's good, it fully open when it is warm. My problem is when it is cold... the hole going to the radiator is never fully closed, see the picture :
There is small gap. I don't think it is very important because the other hole is fully openned so the oil going to the radiator is very little. I would like your opinions, it is normal ? Do I have to replace it ?
Thanks
Gilles