Crank question

[Srobinson4]

Having engine rebuilt is it common to re-use the crankshaft.  What would you all reccommend. New or refurbish old one?  I am not doubting my builder I just don't know what is common practice.

[72hemi]

It is common to replace pistons and sometimes connecting rods. It is not very common to replace the crank unless it is really screwed up.

[Srobinson4]

Thanks 72 Hemi.

SRR

[Chryco Psycho]

the crank is generally poished or cut .010, .020, or .030 undersize & matched brgs are ordered
 the main reason the replace a crank is to stroke an engine & increase the CI or to replace a cast crank with a stronger steel crank
 440 source offers new cranks at very low cost if needed

[Jacksboys]

the crank is generally poished or cut .010, .020, or .030 undersize & matched brgs are ordered
 the main reason the replace a crank is to stroke an engine & increase the CI or to replace a cast crank with a stronger steel crank
 440 source offers new cranks at very low cost if needed

Also it depends on the power output you are planning on having.  If the engine has a cast crank and you are building the engine from stock to mild performance then the cast crank should not give you any trouble.  If you plan on making it a major hp motor and plan on putting some big tires behind it, then I would suggest a steel crank.  Just my 

[moper]

  With all above. A crank can look good and have cracks..so it's junk. You may want to upgrade strength or material. It may make more sense to replace because of balancing issues. Or your crank may need more than basic turning and polishing. Or it could be bent following a mishap. For up to 500hp, the factory cast cranks are fine. For less than about 600, factory forged is fine for a while, but will eventually crack. 440Source has some decent cranks for fairly cheap prices. If you plan on making big numbers for a long time, I would definately use more of his products. I've used 3.75, 4.15, and 4.25 cranks from him so far.