Mechanical engineers use expansion loops to take care of thermal expansion on long pipe runs. Are expansion loops required if pipes are free to expand or contract? Is it because the pipe penetrate fire walls and need be fixed at the penetration? Or is it the building design has expansion...
i need to fimd out what kind of heads i have in my 350 small block chevy camaro. i looked under the valve covers and sawe the numbers k272 688668what kind of heads do i have
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