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It's a serfistant...surfistant...F&%# it. It is a (archive)

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Posted by michael on July 19, 2001 at 23:10:24:

In Reply to: Re: Would water-wetter help with those hot spots? posted by Chad Wilkins on July 19, 2001 at 16:32:21:

chemical that allows water to transfer heat from hot surfaces better than plain water. What it does is lower the surface tention of the water. Inside your combustion chamber there are hot spots, places like sharp edges in the head casting, edges of valve seats and carbon deposits (yes, even in our high reving s-14s). These hot spots can boil the coolant on the water jacket side. This causes a dry spot under the steam bubble. These dry spots tend to grow -> the dry spot hold heat due to the lack of cooling -> more heat = bigger dry spot... Watter Wetter allows the bubbles to break off the surface sooner, due to the lower surface tention of the coolant. this results in smallwe dry spots and better heat transfer fron the whole head.

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