Originally Posted by John Healy
HB: Here comes the conundrum. The Triumph specification for the big end bore dimension is 1.770". So the problem is where did this rod start out. Also it is a bit odd is that it is oval side to side rather than top to bottom.?

old thread, I know Chevrolet found that the rods pinch in at
the parting line and wipe oil off the crank so they had more
clearance at the parting line either on rod or bearing

when I've checked rods on engines i've built, verticle
measurement then 45 degrees each side of verticle to get
correct out of round