In reply to a message from JR sent Tue 26 Feb 2013:
I check mine at least every 25-30k. but then I keep mine on the
ragged edge (.012) for improved idle. ‘‘clacking’’ hurts nothing - to
a point. ie, better a bit loose(.014+) than too tight (.010).–
The original message included these comments:
Any recommendations on milage and valve adjustment. Had it done
years ago and a bit of clacking going on but drive beautiful!
JR 85 XJ6 III