Quote:
Originally posted by 808Infiniti
But regrinds are ok, hard welding the lobes with stellite on original cams is perfectly acceptable. By building the material up on the lobes first and then re-grinding them creates a newly profiled (ramp, duration) cam with the orginal geometry (base circle). A lot of motorsports divisions utilize this method of regrinding cams. I believe that stellite welding a cam actually is more durable than the stock billet, the stellite material is supposedly a harder, denser surface. This is the method that any reputable cam re-grinder utilizes to create new profiles on usable older cams.
Any accomplished engine builder's want to chime in?
-808Infiniti
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Hey, I had forgotten all about that. Back when I worked in a machine shop, we used to use a eutectic, spray-on, welding method for building up components that were undersized like shaft bearing journals etc.. It consisted of pre-heating the component (often while rotating in a lathe) and then a combination gas torch/spraygun was used to weld more material on. You could then machine and grind the components to the right size.