After reading the many posts of trashed cranks and engine blocks because of wiped out thrust rings, I was dreading digging deeper into the engine of my 1980 X. It had only 1 thrust ring that was barely doing anything (the other 1 had fallen off into the pan) and alot of crank movement evidenced by obvious contact between the crank and the block on the 1st and 2nd journals of the block.
However, after cleaning off and dressing the thrust rings that used to look like this
to look like this
I measured both thrust rings and they are right at normal thickness of .092". As a matter of fact, the 1 thrust ring doesn't show any sign of ever being in contact with the crank. I checked the thrust ring bearing surfaces of the crank and, finding no wear, reinstalled the crank and measured end play of the crank. Surprisingly, it was dead on the minimum end play of .002" so it looks like I dodged the ruined crank/block bullet. It's off to the machine shop tomorrow to get the block decked.
Dave
However, after cleaning off and dressing the thrust rings that used to look like this
to look like this
I measured both thrust rings and they are right at normal thickness of .092". As a matter of fact, the 1 thrust ring doesn't show any sign of ever being in contact with the crank. I checked the thrust ring bearing surfaces of the crank and, finding no wear, reinstalled the crank and measured end play of the crank. Surprisingly, it was dead on the minimum end play of .002" so it looks like I dodged the ruined crank/block bullet. It's off to the machine shop tomorrow to get the block decked.
Dave
