Bad day reassembling the 1275.
First, expecting to have to cut the rings, I installed them one at a time
in the cylinders - definitely no need to cut 'em. The 2 oil swipe rings
that go around the wavy expander had gaps much greater than the .012 to
.028 allowable - it was more like .036 to .040. The rings are mfg by AE,
and are stamped +.020, which is what this engine's been punched to. I
think the wavy expander does most of the oil control work anyway, but I'm
sending the rings back (opinions?). This is a pretty obscure question, but
does anyone know if .040 over rings have the same radius as the .020 or
even close nough so that I can just cut the .040's to get the correct gap?
This way I hopefully won't just get a second set back that's wrong also.
Oh, yes - The bores mic at 2.8012 +/- .0003, so it isn't the machining.
Second, figuring I can at least salvage something today, I go to install
the crank and camshaft. Well, the crankshaft has zero end float (as in it
barely turns) with the thrust washers installed. The thrust bearings are
marked "STD", and the crank is the one that was in the block when I got it.
It turned freely then, and the thrust washers looked good, but I changed
them for good measure. Shouldn't I be seeing .002 to .003 endfloat?
Can't wait till it's in the car and starts leaking.
Thanks,
Ron
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