Date: Mon, 30 May 2005 23:03:20 -0700 (PDT)
From: Tom Jennings <tomj@xxxxxxx>
To: AMC List <mail@xxxxxxxxxxxx>
Subject: Piston ID?
Message-ID: <20050530224524.R1488@localhost>
My .030" over 258 has pistons marked "L3103F". Google turns up
nothing. Can anyone ID it?
The head appears to be stock; stock size valves, no evidence of
porting.
The flat of the pistons come up to approx. .036" of the deck, and
the dish on the pistons are 3/16". A Felpro gasket I have, the
thinnest point is .050". The piston dish covers most of the
piston, so there's not a lot of squish space, but it should be
.087". This doesn't sound like high-compression to me (what the
engine is alleged to be). I know there's a dynamic aspect to
compression but I don't know anything about it, and I have no idea
what cam is in there. It's got double valve springs, the inner are
flat wire.
I suppose I could get a degree wheel and measure the cam.
Man, I'm itching to build a motor and do this crap right.
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