My XK 140 engine is getting ready to roar after 45 years in hibernation, but I have hit a snag. The engine was fully rebuilt, it is back in the chassis and I have been preparing for its first start. I static timed it, adjusted the carbs, and primed the engine by pumping oil into the gallery. Prior to firing it up I decided to turn it over slowly by hand and discovered something concerning. The crank turns quietly for about 90 degrees of its rotation, but the remaining 270 or so degrees of movement generates a raspy sound from the lower front, maybe the lower right front. The noise starts and ends at the same spot on the rotation each time. I attempted to attach an audio file, but JL will not accept one. By raspy, I mean a sound which is not metal on metal scraping, but one which has an oscillating rhythm to it. My best guess is the timing chain (which is new) is rubbing on something, but I cannot figure out why it would come and go rather than be continuous if something is rubbing. Any ideas?
One weird fact. I put 12 quarts of oil into the engine, 10 of it through the gallery. I can see that it made it up to the cams through the oil cap. But when I check the dip stick, the oil barely touches the end. Where did it all go? And could it have anything to do with the noise? The engine builder says he turned the engine over numerous times without any problem and he is a trustworthy guy.