First, the introduction. I have a 1990 N/A bought on a whim as a toy. Learned the hard way how expensive and how much of a pain they are to work on but I still enjoy the car.
Now the problem. I have a spun rod bearing that caused minor scoring on the crank and metal contamination in the engine. I want to keep the vehicle N/A for various reasons and have narrowed it down to rebuilding the current motor(new pistons, rods, etc) and replacing the crank,rebuilding and machining the crank with the correct bearings or buying another motor and rebuilding it. Either JDM or USDM. I would appreciate input, recomendations and horror/success stories about the options if you have them. Thanks in advance.

 

turning the crank is usually discouraged because the treatment on the friction surfaces is so hard that when turned, it actually weakens it, and it won't last as long. there are surely places that can do it, and i don't really know anything else to say on that.

if you can get your hands on a low mileage crank or a new one, that's the way to go.

 

2nd. But as I said recently, cranks can be re-nitrided after machining if that's the chosen path. (Used cranks can be expensive, so it comes down to which path saves money, IMO.)

http://www.crankshaftco.com/steel-cr...hardening.html
Companies like:
http://www.ans-ion.net/?gclid=CJGPhK...FQcMDQodxUXhBw
http://www.metalimprovement.com/heat...FRHyDAodNS6KCA
http://www.nitromet.com/

 

Sorry for the delay. Thanks for the information. I guess I will have to go the expensive route.