DannyP posted: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.
You know more about this stuff than I do, Danny but I have put more than 12,000 km on the car since I bought it and it seems to have come to no harm yet. I get the car warmed up totally and then check the oil in the reservoir with the engine running. I keep it topped up to the fill mark on the reservoir's dipstick. Oil on the engine dipstick never seems to go over the full mark. What more can I do ? Do you suggest I install a new CB pump system ? I don't know for sure but the existing Claude's Buggys pump may have about 52,000 km on it. Would your last sentence above suggest that the reservoir is filled too high...like the dipstick is marked full at too high a point ?
Because this is a relatively new car to me with this system, I have no history / pattern to compare current conditions to.