Background: Bought a rebuilt engine from a guy in the Vegas area, It sat for several years before he sold it to me. SInce then I have installed and done the necessary break in to get it going, but now It's leaking at the Main Bearing seal. I have done research via stovebolt and it seems that when an engine sits for a while ( even if rebuilt ), that seal tends to dry up and leak. I have also done some searching around and there seems to be two style of seals, one " rope " and the other neoprene. There also seems to be a grey area for what year block uses what seal?
My Block code is : 3738307 which puts it in the 58-62 range. I have pulled the Main Bearing Cap off and I have the neoprene seal, but there are two metal shims on either side. With the research I have done it seems, if the shims are there I need to use a rope style, but I have the neoprene installed. Do I have the wrong seal installed, if so, is that the reason for the leak? Please help
