Quote:

Quote:

Quote:

Mike.... Not wantin to be a pain , just kickin some stuff around, Bock filled or wet? Whats the side clearance? Whos piston, Honed with torque plate? Type of piston coating, Shop temp when measuring vs assembly..... The bores and hone should have been like new both times from the amount of run time, Something's not happy in the bores.



No problem.... its a wet block, bores are .002 larger
than the piston manufacturers spec (Diamond) due to
honing... the first time the oil rings almost dropped
through(about 6# pull) so they were too small for the
bore but I tried it anyways... I had a bore of 4.075
instead of 4.070 and I ordered everything for a 4.070
bore(thats what I thought it was without measuring it)
so this time I had it honed to 4.077 and the rings
are 4.080 non file fit which still gave me material
to file fit them..... I had the pistons coated to
make up the difference but they are .001 smaller than
what I was hoping for... temps were very comparable...
within 10*




are you saying the pistons are for a 4.070 bore but the bore is actually 4.077?



They were originally for a 4.070 bore but I had
them coated to make up the difference... this thing
was a screw up on my part from the moment I ordered
the pistons... I measured 2 of my 3 blocks for bore
and I assumed the third was a 4.070 also with just
a quick measurement which it wasnt 4.070 so when I
grabbed that block it was a shorter deck height and
I ordered the pistons to that shorter deck height....
I know I can have the coating removed and use another
block but I would have to see if the cam exposes the
oil supply hole in the lifter