Top
and bottom both appear flat.
Average
thickness at front of head is 4.482"
Average
thickness of rear of head is 4.484"
Has
mismatched front tower cap. The one on the head was a far
worse match than the one we just put on. Still; it is not
correct and usually the solution is for to have a machine
shop use the bottom of the tower and the 4 other towers
as a guide; remove a little bit from the bottom of the
cap and rebore the front tower assembly, together with
the others {called with line boring or "align boring"
depending on your political preference and religious
persuasion}:-)
DATSUN
U20 USED HEADS
Info
For
General Info on U20 Heads click on Rebuilt
Heads
Info.