All,
I am trying to pass OR emissions with a '77 MGB. The car has a mild performance including compression and cam. The result is a chunky idle with a miss. I believe reducing some valve overlap will reduce the idle miss. What is a safe maximum valve overlap? I am thinking 20 on the intakes and 24 on the exhausts. Has anyone done this? Are those clearances on the lands or are they on the lobs?
Thanks, Dan
I am trying to pass OR emissions with a '77 MGB. The car has a mild performance including compression and cam. The result is a chunky idle with a miss. I believe reducing some valve overlap will reduce the idle miss. What is a safe maximum valve overlap? I am thinking 20 on the intakes and 24 on the exhausts. Has anyone done this? Are those clearances on the lands or are they on the lobs?
Thanks, Dan