Here's a set of bearings that should spark a good discussion. These are the bearings that came from the bone stock engine used for these measurements. These were "Crankshaft-1" journals, rods, and bearings. I've correlated the clearance measurements by cylinder number. This allows one to see the bearings that came from the cylinder with the least and most amount of clearance.
It's sure to spark some discussion, because the first thing I notice are the worst looking bearings coming from the cylinders with the largest bearing clearance. I've got to be honest, I don't quite understand that; but this is also the only engine I know that has correlated the clearance to the actual bearings. As we see more motors taken apart, that's when we'll know if this is the norm or the anomaly.
S65, 30000 Miles, Bone Stock, 2008. More Photos
Factory Bearings: 088/089
Category: 04/05-Moderate
Description: Bone stock engine disassembled to make stroker motor.
| Cylinder | 1 | 2 | 3 | 4 |
| Clearance | 0.0368 mm / 0.00145" | 0.0330 mm / 0.00130" | 0.0457 mm / 0.00180" | 0.0305 mm / 0.00120" |
| Photo | | | | |
| Photo | | | | |
| Clearance | 0.0330 mm / 0.00130" | 0.0318 mm / 0.00125" | 0.0444 mm / 0.00175" | 0.0330 mm / 0.00130" |
| Cylinder | 5 | 6 | 7 | 8 |