What would be posted by ZXRider(SoCal) on August 03, 2008 at 11:47 AM
Message
They act as stops to prevent the bearing from rotating which is bad if for no other reason than the oil hole woul no longer line up. When building an engine, oil behind the bearing shell would cause the bearing to compress and distort because oil being essentially non-compressible would tend to flow out to a very thin layer but not leave entirely. We are talking about a clearance that thousandths of an inch or less matter. In all the engines I have disassembled, I have never found oil across the surface between the rod or main and the shell back unless the parts were not fit correctly at assembly. When taking them apart there is often oil in that area around the hole or near the wedge but only just a little bit that seeps into an area that has clearance because I have taken the rod or main apart and released the pressure on the shell. Or possibly due to some distortion of the shell near the wedge when it was formed.
