questions in a crank swap since mines bad

[Wheeliest]

for a cheap quick fix that could last 1 hr or 40k miles, u can throw in a used un-damaged crank and slap a used rod with new rod bearing. but in a perfect world, there are markings on the rod and cases that require specific bearing sizes (when assembled new) your actually suppose to plasti gauge the plane bearings (crank bearings/journals) but from what i seen in the different size crank bearings is not a real measurable amount. you will need to buy a new head gasket also.