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Old 15th April 2016, 17:31
NigelB NigelB is offline
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So I think that means that you fill the cooling system so that the water level is half way up the top tank of the radiator, allowing any expansion to fill the top tank when the engine warms up.

Put a 7lbs cap on the radiator allowing 1.5 atmospheres of pressure in the cooling system (that works for me) and then use your tank in the battery compartment to act as an expansion tank, after drilling a small hole in the top of a 0lbs cap and ensuring the return pipe from the radiator pipe goes to the bottom.

Then the height of the expansion tank doesn't matter and you don't have to change anything. (I think)

Nigel
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