With Chevy 235 becoming increasingly difficult
to find, I buy them when a chance comes along.
I bought one, 55 - 57 casting, and brought it
home from San Pedro with crossed fingers. Not
too bad except one cylinder presents a challenge.
The previous owner allowed water to enter the carb
which ended up in the number one cylinder causing
very minor rust damage. This damage, although
minor, is measured at .012 to .015 in depth.
Real problem is this engine is stamped bored to
.040 and normal limit is .060 overbore. Taking
it out to .060 will not quite clean out all of
the damage, minimal left but that is unacceptable.
I am told you can take the 235 out to .080 over
like the big brothers. However, over the decades,
this has never been my personal practice. I am
concerned the water jacket will be too thin which
will cause overheating problems.
My first choice is to sleeve all cylinders and
bore to standard. This will present no problems.
Still, I am curious about a .080 overbore with
a 235 cubic inch (not the larger engines) and
what effects where noted.
Anyone have any direct experience with this?
Positive or negative outcome?
Thanks,
Billyray
