[Walt Fricke]

1-ev: Blue isn't strong enough. The 6 bolt, 70.4 cranks had a bad habit of coming loose in high rpm (~8,000 and above) race useage. Stock torque on these bolts is inadequate. I'm not willing to experiment with stock torque and red Loctite, as I suspect it is inadequate also. Nor with the 150 lbs/ft with no thread locker. I had two flywheels get loose before Bruce Anderson tipped me off as to what would solve the problem. If I built a race motor with ARP's bolts, I'd use 150 lbs/ft for torque on the bolts, and red Loctite. Those guys are engineers, but I rather doubt they have tested their stuff on an 8,500 rpm early 911 race motor over an extended period of time.