SBC block filling ?

[Dwight Southerland]

Originally Posted by Reed Granrt

I am very sure that I did not say this, but You may want to consider rust stripping the block inside. If you pour the block with the rust layer that is there, you will set up 2 problems 1: the rust acts as a blockage to heat transfer out of the cylinders 2: You will have poor adhesion by the block filler. Make sure you de-acid with a acid that does not attack the base met. Only use acid that attacks the rust oxide. If you do not find out what that is, PM me and I can tell you (but I didn't tell you)
reed

Muriatic acid. Wash well and neutralize after.