sealing · FF-0109

Why does a .125 overbore bring the cylinder too close to the head's water hole?

Ed shows that the original heads have a water hole beside the cylinder. Boring the block over moves the cylinder closer to that hole; he points to about .060 on one side and a little over .050 on another, and the original head still has its big matching hole.

Expert

Ed Smith

Evidence

expert attributed

Component

cylinder bore, block water hole, and original cylinder head

Applicable scope

1940 24-stud Ford Flathead V8 bored .125 over with original heads