Jetsbaby,
You asked me , what was the total crush I set my seal at, not the person on 460ford.com. He based his crush on a 400 Pontiac seal not a 385 series viton seal. There are to many varibles here to correlate this to my situation and use his exact numbers. When I said pay attention to detail, I meant your detail. Whatever I read on any website or manual I DONOT interpret it as cast in stone. I digest it as a starting point or an different avenue to approch the problem. Remember this is third hand info. I also talk to Ford Racing and Flatlander both have problems with the 2 piece seal. Did I mentioned I put a dial guage on the crank to make sure it wasn't out of round, did I mentioned I machined the seal at 87 degrees to the 200 grit wheel instead of 90 also(this was so the lip mated properly) the ring that the rubber is vulcanized to is tempered. If you are adjusting the radius of the seal lip you have to bend it pass center line and then let it relax to accommnodate the radius of the crank. I base my crush on 2 things, the way a one piece seal lip rides on a shaft and the distance I had on the cap to the block with the seal bottomed in the groove and from my experience .012 is where I want to be.
My opinion----If you don't machine the seal accordingly(or to much crush) it will have a tendency to heart shape due to the spring steel in the ring.
I have no leaks to include checking between the flywheel and block.
I will be heading to the DYNO in a couple of weeks. My best guess is 700 to 750 hp @ 6500? And 700 ft lbs torque @ 4500 rpm? You can hold my feet to the fire on this. I will post it.
