ok what exactly is shot peening and how is it done?

 

It's basically taking whatever you're having shotpeened, and shooting a bunch of small metal beads at it. After the process, the piece is more structural sound, and stronger. Shotpeening stock rods is a cost-effective alternative to getting new rods. The rods will end up stronger than they were before, at a fraction of the cost of purchasing new rods.

 

ahhhh... thanks :bowdown: :thumbup:

how much on average would shot peening cost?

 

Would probably run ya about 60 bucks for a set of four rods. You don't want to just take out your tired, old stock rods and have em shot peened; then slap em back in. Generally it's done as part of a process of restoring/improving the rod which can include magnafluxing, cryo treating, polishing, balancing, and smoothing out the various surfaces which mate with other parts. For the cost it takes to prep a set of stock rods you can almost pay for a set of cheaper forged rods like Eagles or Crower Econobillets.

 

as well, the reason shot peening became popular was because old school chevs had rods that were unpolished (in that they had rather large casting flashes on them still, which are stress risers, which are bad) and they didn't come from the factory shot peened. Honda rods on the other hand, don't have very large casting flashes, they are so small infact that an old school thought I'd done them already and congragulated me on a job well done, and they come factory shot peened. You know buck-shot from a shot-gun. Its like shooting a peice of metal with a shotgun...

 

true about the stress risers. I dont think i would bother shot peening stock rods and just get new stronger ones.