Erle,
I believe you want JB 8265S which is the commonly known two tube package that every automotive store has. I've used it many times, exposed to heat and oil and it just won't fail. I clean with Dawn dish detergent, followed by acetone and then rough up the mating surfaces with some 600 grit, clean with acetone again then mix and apply. The ambient temperature of the materials and workspace make a difference, I've had difficulty with curing below 40° and above 90°. I've built up engine block bosses for valve covers and drilled and tapped it. Built up case bosses in an old 64 Triumph and used it to hold a Helicoil. None have failed. Just my 2¢.
