Some of my best friends are...uh...overboring.
Sorry.
I had the choice between sleeving and using a different (235) block and I
decided to use a good junk block I had access to, and all is well.
The block came from a 1962 Buick I think, and it had a couple of lugs in the
wrong place so the bird legs no longer fit, but we actually made a beautiful
custom center motor mount for it. Unless you are looking for bird legs (which
I admit I used to think were cool) you can't even notice it.
Thanks
jonas
On Sep 24, 2011, at 6:40 PM, Nate wrote:
It's *very* poor practice on several counts : the cylinder wall get too thin so
the engine tends to run too hot and this means short engine life .
Plug shift when the block was originally casted means the cylinders may have
seriously thin spots in their walls , this leads to " drop outs " where the
cylinder simply fractures & fails as you're happily Motoring along....
If the block is a good 'un , have the cylinders sleeved ~ this will be
expen$ive but , boring 0.080" over is plain old silly ~ this means way beyond
ill advised and well into foolhardy .
Any Machinist who suggests such a thing , is no longer on your team .
-Nate
Ken Wrote ;
Hey guys, I posted a question about boring a 235 .080. last week. It is rare
that I don't get at least one hit from you guys. My question is; has anyone
bored a 235 chev up to .080. They make pistons that size, but I am getting mixed
messages from lots of mechanics and machinests about the adviseability.
Thanks for any input.
Ken
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