when I disassembled by 03 WR engine to do the valves everything was well in spec. However I noticed some pitting on the piston pin and I was thinking it could be starved for oil. has anyone ever tried expanding the oil ports in the top of the connecting rod? I was thinking this would give more lubrication. Now, I'm not about to take a grinder to it, I was just wondering if this is a known issue with other bikes as the rest of the engine was well in spec so I was suprised to find an issue at all. especially there.... I mic'd it and it's in spec. No play in the conn rod so I'm hoping to just repalce the pin and I thought I would just check to see if there was a known soloution. It's sort of hard to see on the phoots but the wear is happening only in the area under the left conn rod oil port. weird
Edited by thumper_calgary, March 05, 2015 - 09:59 PM.