[Kurt in NJ]

I have taken rods out without removing the head-----all I removed was the oil pan,---only on a stock engine, only if it didn't have centerlock pins, can't be done with counterweighted crank, I'm not saying it was easy, and if doing all 4 take the head off
I did#3, pulled the rod off the crank, rotated the crank so the piston could be pulled down as far as it could, rotated about 45 degrees, removed circlip and using right angle snap ring pliers and pushing/moving the rod in unison with the snap ring pliers I moved the wristpin over far enough to replace the rod ----together was easier

Before you order your new bearings you have to measure the crankshaft---for babbitt rods the exact crankshaft size is not that important, the rods can be adjusted some to the crank, but for inserts the crankshaft HAS to match the proper size(and be round,no taper, scoring) to have proper clearance

If some of the babbitt is coming apart you had better look at all the babbitt