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Reply to "Building a faux cam Carrera track car"

Stan Galat posted:
David Stroud IM Roadster D posted:

Thanks for all that, Stan. My pump is more like the CB Perfromance example you showed above. Here's two pics. The second pic (from the rear) has a very dirty finned surface and two rows of lettering and only part of the bottom row is legible....last three digits might be HES. 

 That's an older CB pump, and it explains why you have oil in the crankcase. As long as it doesn't start puking out the crank-seal, and as long as you have a good supply of oil in the tank-- it might not be ideal, but I don't see what it will hurt.

At least it explains why you're seeing what you are seeing. The scavenge pump isn't keeping up.

Which begs the question: what exactly is the oil pressure at different rpms warm and cold? And, it is entirely possible David just has way too much gosh darn oil in his engine/sump/tank/system. Too much oil is bad, very bad. Almost as bad as not enough, maybe. I'd be willing to bet it's overfilled some, and that is part of the problem.

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