chain tensioner gap of 7.9mm.. and rattling noise

[ella_2007]

I was considering to replace my chain as i am going to do my gasket soon..

opened up the tensioner today for first time

it wasnt so bad as i imagined.. the gap is 7.9 mm, i think its still far from the threshold.. lucky..

is it a nromal reading for a 1992 900i 177000 km??

i was expecting something like 10 mm or more o.o because i can actually hear some rattling noise while warming up the engine.. i guess it is just the valve..

now i guess the chain is fine, i only have to do the gasket now..