Any body out have the specs for the ring end gap for a 91 560 m117 engine? and has anyone ever sleeved those blocks? thanks
in advance.

Rule of thumb is .004in per inch of bore. Worked fine for many engines over the years.Maybe some one will come up with the MB spec if not and i was doing the job i would use that. Don

__________________
Red Green "This is only temporary,Unless it works!"

97 E300D 157000 miles
87 300TD ?141k? miles

Thanks Don,
That's what I was afraid of. .014in seems a little tight, but I can see that as the low end and .018in being the limit. with the gap presently at 0.053in in the worst cylinder at the top, I believe my engine maybe toast.
Allen

Are the pistons out? If so, irrespective of ring wear, and the attendant increase in gap, bore diameter is decisive.

Are you checking with a new ring or a worn one,that can make a considerable difference!
Don

__________________
Red Green "This is only temporary,Unless it works!"

97 E300D 157000 miles
87 300TD ?141k? miles