Hi all,
I’ve got my R2 engine apart, and have noticed the Big end bearings are in the following order: piston 1 and 4 had the oil groove in the bearing at the con rod end and piston 2 and 3 had the oil groove at the cap end of the big end I assume this is the incorrect orientation of the bearings, as the parts image has two different part numbers for the bearings obviously cause one bearing has a groove. Although I don’t have part numbers on the bearings so therefore can’t tell which was the right orientation for the bearings. Has anyone out there recently had an engine apart and could possibly point me in the right direction of the correct orientation.
Much appreciated,
Dale