Andrew...
I couldn't believe it when I initially heard
it either and was even skeptical when my
mechanic educated me on the "all
aluminum" modern Japanese engines,
as well. It still doesn't "sound right"
to me but I tend to think of engine blocks
as really "strong, solid" pieces of metal
in terms of 30+ years of "cast iron" exposure & experience.
Then again, David Vizard does mention
"bore flex" in some 1380+ Series A
applications, so it's obvious what happens
in this respect when the support structure
gets a little thin. And Bill Perry of Rivergate will not use an early
"thin
flange" 1275 A series in his commercially
available rebuilds.
Cap'n. Bob (Ret'd)
'60 Frog
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