Temp
Water boils about 4 deg F higher for every 1 pound pressure in the radiator.
Hence as a motor works most efficiently the hotter it is without boiling, as soon as you loose pressure it boils straight away. The golden rule of "Never undo the pressure cap while the motor is hot" is due to this. If you want to cool the motor just leave it idling & pour cold water over the radiator (not under pressure) for a few minutes & the cooled down water in the radiator will have circulated thru the motor enought to have an effect.If you are confident it has cooled down enough you can then check the water level if there is none left in the catch can. Failure to wait untill it has cooled down enough can cause boiling & result in a cracked head or worse!
I'm running a product called 'Water Wetter' supercoolant from Red Line (1 ounce per quart) with 50-50 Glycol mix.
This a product commonly used in racing (especially turbo'd motors) without the glycol for an up to 40% reduction in operating temperature but needs the glycol on the street for it's anti corrosive / antifreeze properties.
Suck, Squeeze, Bang, Blow arent just the 4 cycles of an engine
Bookmarks