[dmac]

I have a '77 911 2.7... at 28 years old and 90,000 miles it has never been apart and runs great. The studs torque fine. It has the 11 blade fan, oil fed tensioners, and no reactors. I use Mobil-1 15W-50 changed once a year, which is about 3000 miles. I wish it had another 100 hp, but thats another topic.