Posted by Janicholson on December 17, 2013 at 18:30:34 from (74.60.94.18):
In Reply to: Coolant bypass posted by notjustair on December 17, 2013 at 15:17:05:
When built, the design wasreflecing the thinking that cold parts last longer. they do not. old oils were self destructing from day one, and cool oil is good for those old oil formulations and cracking methods. Efficiency is driven by heat used to push the piston. The hotter the engine surfaces the greater proportion of the combustion heat is used to push the piston. New oils are happy in the heat. I would use a grinder to prep the oblong hole, then braze it shut. A .375 hole would be where I would start. Jim
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