[Spridgets] Bugeye Group..... Re: A series head ??

[Ron Soave]

--- David Ramsey <dwramsey at att.net> wrote:

> But did you use a concave or convex meniscus?  I
> guess if you did 10 or so
> readings using both and averaged the readings,
> maybe

My Longman head (not the $1500 one; this is the one
about 1/2 that) is marked 21cc. I bought it new, never
cc'd it. I spec'd pistons based on that. I was
concerned last winter when I did the annual valve job
and the machinist said 6 thou needed to be milled for
flatness. I asked him to cc it to determine if I
needed a thicker head gasket or wanted to risk 13:1+
CR. AFTER machining it came to 21.5 cc. Gotta love
Longman. Lesson learned, cc it every time.

Ron


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