akyota1990

im having a problem with my rebuild. my new rod bearings on number 4 are getting chewed up about a 1/4 inch wide on both bearings on the same side. i cleaned the crank journal and i reversed the bearings (bearing cap on connecting rod-on bearing cap) to see if the other side would get chewed up. i turned it over for a bit pulled it back off and checked the bearings there was very very lite marks nothing major. so i put 2 new bearings in and same thing very very lite marks. so whats making the marks I'm worried because i don't want to chew up the new bearings and the crank. the crank is fine i don't feel any roughness or any gouges. any one got any ideas, i was thinking about just turning it over a few more times before i put it back together to see if it gets worse. by the way every thing is standard.

deserthound

put a strip of plastigauge across the entire rod bearing surface, assemble and torque to spec. Remove the rod cap and see if the indicated clearance is uniform across the entire bearing surface. If not, you may have a slightly bent rod.