Clevitte Main Bearings with slotted oil feed - Looking for PN

TurboGLH said

Not talking about the thrust face.

Oil supply hole, where is feeds from the block is normally a hole (like shown below). A mod to increase oil flow and time is to slot the feed hole.

View attachment 1715492968

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I've written bout this before, but the slot does absolutely nothing. That's why the manufacturers stopped doing it.

At one time I had a fixture to hold the mains so I could buy half groove mains and cut the other groove myself, and then I could slot the hole. Slotting the hole was a giant waste of time.