Originally Posted by One to Remember
i have a 1983 dodge ram slant six. i had to put a new engine in after the old block got a crack in it. the issue with the new engine it seems is its dry perhaps. When i put everything back togethor and put oil in it it ran fine but after leaving it for 10 days or so without being run it seemed to make a scraping screeching sound i guess. a mechanic said it was the bearings and maybe my journals on my crank but i dont see how that could be the case if i havent even ran the engine on the road or started it more then 3 times. there shouldn't be any damage this quick. the guy who looked it it said it was because my oil pan was off of it for more then a weak but i think maybe there isn't enough oil in the cylinders.
One would say this wasn't run enough to start with, starting it up, then shutting it off for ten days isn't good. I don't know what has been damaged, but an engine needs time to run in, this lets the parts get to know each other and it provides time for the oil to work into the pores and crevasses of the metal parts where it is held for the next start up. When this isn't provided for by time and heat cycle, the oil runs out of the oil system and from the rubbing surfaces. So the next start up is essentially a dry start. Under normal or typical circumstances, most engine wear happens in that first few moment after start up. Watch how people around you like at a parking lot treat their engines. I saw a guy the other day, he had that thing moving before the engine got to idle. He just fired it and had it moving skipping over giving it a few moments to pump some oil thru it. You know that isn't going to be a long lived car.
So why was the pan off? There isn't oil in the cylinders at least hopefully no oil in the cylinders.