02-05-2023, 02:59 PM
There is a lot of coolant in an A7 thermosyphon system and providing all is well with it you really shouldn't have to worry about overheating. My RP has been up and over the Alps & the Pyrenees several times and never once got to boiling point. As stated by Colin, the oil pressure gauge on a splash fed engine will give you a good idea if things are getting hot, but this usually only occurs when the engine is working hard in a lower gear. If things are getting really hot under the bonnet it's possible that some vapour lock may occur, (with loss of power or misfiring) but if that's the case just run with the bonnet open until it cools down. Once over the top of a climb things very quickly return to normal.
My advice is forget the temperature gauge, it's just something else to worry about. More important is ensuring that the engine warms up quickly.
My advice is forget the temperature gauge, it's just something else to worry about. More important is ensuring that the engine warms up quickly.