Could someone explane to me what happens when a very thin ice layer forms on one side of the insulator when starting up the engine. Its there just fore a few minutes and then dissapeares again when engine is getting warm. Martinius.
Gee, Thanks, Bill! You didn't have to dumb down the reason behind this just for us~ I would have preferred a more complex answer. (One of their formulas is wrong, but it's close enough for government work...)
When you compress a gas it becomes warmer. When you decompress a gas it becomes colder. Air outside your carburetor at sea level is at a pressure of around 30" of Mercury (about 14.7 PSI). Air just under a closed throttle plate in your intake manifold is at around 18" of Mercury (about 8.8 PSI). This drop in pressure results in a drop in temperature. That drop in temperature is transferred to the insulator. When the insulator cools enough that the temperature of the ouside of the insulator reaches freezing the moisture in the free atmosphere surronding the insulator freezes to the insulator. After a few minutes of running heat is transferred from the block and exhaust manifold to the intake manifold and eventually to the insulator. Once the insulator temperature exceeds the freezing point of water no more ice forms on the outside. Did I pass Zig?
Yep, when I bleed the water from the compressors there will be a tiny cone of ice that forms on the concrete pad under the drain valve. Happens even on 100+ days.
Thank you fore your explenation Bill. I wanted to thank you for the litle lesson in physics . Old knowledge from gynmnasium is comming back in my mind. Friendly regards martinius.
