I'm pulling this 3.0SC motor down.. it had sat for a few years but full of oil.
When splitting the case, I found what appears to be the surface of the main journals delaminated? The corresponding bearings didn't look too bad...
Have a look at this video.. then see the pictures of the bearings that I pulled out after I removed the crankshaft.
Only the main journals have this delamination... all the rod journals were perfect as were the rod bearings.
Have you ever seen bearings with that sort of damage before? What could cause that? The oil didn't appear to have any water contamination.
Someone suggested that if the ground strap was missing, then when starting it might have drawn the current through the engine and earthed through the bearings? Is that possible??
