I have just spun #1 rod bearing. It didn't run long damaged and not under much load, so the crank, while damaged wasn't all that bad. It did have some scores, which I was able to polish out to an acceptable limit( not perfect)
I know the proper way to address this is to have the crank resurfaced, but for several reasons that just is not feasible, I have to work with what I have in frame.
The other journals are in good shape, and I have replaced them with standard bearings. The best I could find for #1 was a .001 undersized bearing, was hoping for at least a .002, but I guess they don't make them. In fact, parts for this engine are becoming an issue in Canada it seems, rather surprising as GM stuffed the 3800 into just about everything they made save full size trucks.
Now it has a noticeable play up and down on the crank, with an audible clunk as I do that.
Using plastigauge I seem to have about .004 clearance, about twice the GM spec, of .0022.
I am wondering if anyone out there has had any similar experiences with large bearing clearances, and the eventual outcome. Perhaps thicker oil helped, or has anyone found any bearings that might be more appropriate? Or have had similar clearances, did the engine last?
any input welcome, thanks
Jeff