Windage Trays And Etc During Cam Break-In

In my opinion, the vast majority of failures are not cam or lifter metallurgy or quality control. It’s two main points of failure:
The block’s machining: the same production line stuff that cut the decks out of whack and bored them out of perpendicular did the cam bore and lifter bores, with the same attention to detail and accuracy that worn production line equipment and line workers delivered elsewhere.
And the ability of the person or persons managing the assembling and initial firing. If the lifters don’t rotate, or the wrong lube and oil are used , or the engine is rotated 400 times trying to get oil and fuel pressure, or doesn’t start right off, or the cooling system can’t handle it and the break in period isn’t long enough- there’s a good likelihood ***** going to go wrong.

None of those have anything to do with the cam and lifter product. Failure of one or more of those is just the symptom.

none of that had anything to do with oil control below the crankshaft. A scraper might reduce splash off the crank, that’s what they do. But they are designed to strip away trapped oil after the crank passes the sump. So there’s still a shitload going “up” as the crank rotates. The original article is off. Way off for an industry paper...