Originally Posted by CobraJet
Thanks for the heads up Scrubtik, very interesting. When I drained the rad, I only got about 6 quarts out. Is the US quart different to the Wakefield Castrol oil bottles?
Currently a 3 core rad, 6 blade fan but no shroud, still overheating at speed (sometimes), any idea?
Is the shroud you're talking about like the ones on the xw -xy aussie falcons
The shroud is similar to our Falcons but I'm not sure if they will bolt up to the original Mustang radiator.They help draw more air through the cooling fins,by creating a Venturi effect,capturing the air that would be lost around the outer edges of the fan.More important in the A/C models where the condensor creates more cooling load.
They help more at idle & low speed where you need the extra flow.At high speed the natural air flow should be enough to cool the engine,(I run a Davies-Craig 16" thermo fan only & it only comes on under hard driving & idle) so as "Big Block" states,you may have a different problem.
Is the radiator new?These old cooling sytems have to be clean to be efficient.Maybe a reverse flush & pressure test.A good cap holding pressure will help.
Retarded timing will tend to run a little hotter.Collapsing hoses & higher speeds won't help.Good Thermostat?Start at the cheaper end & work your way through.
As to the US quart query......I did a few sums & ended up with a headache
The US gallon is approx 3.78lt.Ours is 4.54lt
4 quarts /gallon,1US qt= .94lt
1 Aus QT=1.135lt
Conclusion.........Buggered if I know!!