Crank pin journal should be 1.3094. I've rebuilt a couple of the big cast iron briggs and all of them had some side to side movement of the connecting rod on the crank journal even with a new connecting rod. If your around .010 I wouldn't worry about it. The briggs engines are a bit sloppy internally compared to a Kohler.
Pull your piston and rod and carefully inspect the journal and bearing surface of the rod. If you see Any scoring or dark burnt spots on the rod your going to need to get another rod. You can polish the crank journal with some super fine 1200-2000 grit Crocus cloth. I always polish the connecting rod bearing surface a bit with 2000 grit crocus cloth. Just enough to take the dull finish off.
Check your wrist pin for wear. It should pull out of the piston without having to hammer it out. (I had to use a punch and hammer on the last Kohler I tore apart) Wrist pin wear can make the rod wear really funky on the journal. If the wrist pin is worn even a little bit your sadly going to need another piston as well.
If you can spare $82 I would put a fresh rod and piston set in it just for piece of mind.
Connecting rod and Head bolts both go to 190 Inch pounds.
STD Piston Kit Briggs part # 792365
STD Con Rod with dipper Briggs part # 299632
Piston kit on Ebay $39 shipped VS $75+ for the same part elsewhere.
NOS STD Rod with Dipper $43 shipped on Ebay VS $78+ for the same part elsewhere.
Checked Partstree and they want $152 + shipping for the same parts. Some times you can get lucky and find NOS rods on Ebay for $20-30 but not very often.
Edited by EricFromPa, March 19, 2017 - 04:10 AM.