- Sep 16, 2007
- Los Angeles, California
my engine long block is nearly assembled/done. then we discovered this groove (pictured) on the crankshaft where the main oil seal installs. is this normal? is there a remedy without having to take out the crankshaft again? the engine rebuilder say that sometimes they placed a sleeve there but the sleeve wears out easily? please advise. what experience have you had with this? should i not worry about it or take the crankshaft out again and put a sleeve on it?