Most production parts are already heat treated so the only thing you can really do to them is external treatments. The WPC process is a lot finer than than standard shotpeening.
A lot of the import cars never had aftermarket support for transmission parts or ring and pinions so it WPC became the trick to making stock parts live in performance applications. I use it a lot on my rotary engine builds.
I've been looking at some Youtube videos about this WPC coating and it looks like it has many applications in our drivetrains. I think oil pump rotors could really be a good application for this treatment. Transmission gears and rear gears would be a no brainer for this type of surface prep. I'm going to look into local outfits that may provide this service.
Thanks for the information
Gus
