|Robin Hoods and 7 type cars, are noted for overheating problems, one of the usual faults is that the thermostat can be fitted "the wrong way round" the copper "bulb" needs to be in the water of the engine, not the hose. See picture|
QTH370 (Quinton Hazel Pt No)
Thermostat that starts to open at 77 degrees, but comes with a 'Baffle' fitted, this needs to be removed along with it's mounting peg.
the 2nd piccy shows the normal stat on the left with QTH370 on the right.