Re: Roundabout temp range on a 100 (or a super A f

Posted by Roger Mills on March 22, 2007 at 06:32:15 from (71.37.118.105):

In Reply to: Roundabout temp range on a 100 (or a super A for t posted by Patrick Martin on March 21, 2007 at 18:11:09:

Without shutters on a "thermosiphon" system with no heavy load the only reasons for them to run above 100-120 degrees are bad news, ie leaky or wrong head gasket, clogged radiator etc. Usually they will not even move the replacement gauges off the bottom peg without a load. Also on these early systems the gauge monitors the coolant coming back to the engine at the bottom and they read much colder than the coolant going to the radiator at the top. Check the coolant level fairly often to make sure it is full or the siphon system will not circulate. Under low coolant level conditions the engine will overheat but the gauge will not show it because there is no circulation. Later systems with the water pump also have a thermostat and the gauge monitors at the top and they work and read like most cars.

Replies:

• Re: Roundabout temp range on a 100 (or a super A f Hugh MacKay 12:32:23 03/22/07 (1)
  • Re: Roundabout temp range on a 100 (or a super A f Patrick Martin 20:23:15 03/22/07 (0)

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