Cam And Lifter Hardness Testing

I actually had a custom ground hydraulic roller that failed shortly after I installed it. Called the manufacturer and they asked for it back as well as an oil sample. I sent it and the oil to them and they did some testing. They came back and said the cam missed the hardening process and they cut me a new one and reimbursed me for the engine refresh costs. Made a happy customer. Thanks for the video.