.
. . Looks
to be warped .003" on bottom. Average
thickness at front of head is 4.406" Average
thickness at rear of head is 4.406" It's
been cut a lot; 1/8 of an inch! You'd have to go to some
extreme measures to use this. Value
is in towers and rocker pivots. DATSUN
U20 USED HEADS
Info .
Datsun
SRL311 Cylinder Head from Rallye Enterprises,
Ltd.
Head
has about .004" crown to take out of top middle. Cutter
should be stopped before it reaches the ends of the head;
so the area under the end towers are only skimmed.
For
General Info on U20 Heads click on Rebuilt
Heads
Info.