Post by
float_6969 »
https://forums.nicoclub.com/float-6969-u780.html
Tue Oct 06, 2009 5:05 pm
I have no CAS and about ruined my motor by not running an upper cover. Somehow, and this still amazes me to this day, a small pebble managed to get down into the lower cover from that opening and get stuck down between the belt and the oil pump. It actually rubbed the belt into 2 pieces, but luckily the belt stayed together and I was able to replace it before it let go.
Needless to say, I run an upper cover now.