5S-FE MK2 Non-Turbo Engine Intake manifold heat insulation [Archive] - Toyota MR2 Message Board

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Had another idea - this one is pretty simple. I found this site for some common thermal conductivity tables for many engineering materials. Using Carbon Steel for the M8-size intake bolts the value is 43 Watts per meter per Degree K - whatever; skip the units and focus on the numbers! We all know that copper is one of the best thermal and electrical conductors out there secondary only to silver. Gold comes in third and aluminum is fourth - according to the tables aluminum is 8X more heat