Quote:
Originally Posted by Che70velle
Bryan, Callie's utilizes two different types of hardening processes on their Dragonslayer, Magnum, and Stealth crankshafts. Perma-tough, and Dura-tough.
The tricky part is figuring out which process was used on your crank, because apparently some Dragonslayer cranks brought into America (the Dragonslayer is made in Asia) receive a Perma-tough process, and some receive a Dura-tough process. The Perma-tough process is most desirable, because it allows the crank to be turned out to roughly .060, and won't need re-hardened.
The Dura-tough process, not so much. .010 is getting into the outer edge of the good stuff, and once you get out to .020, well it will need to be re-hardened.
I find conflicting info concerning what cranks get which process, and I don't know how you'd figure that part out. The re-hardening process will be costly, because it typically means re-truing the entire crank, due to the heat causing it to be distorted.
If your in a hurry, you might want to simply buy a new one, and sell the one you have. Great news on the block, by the way! As Greg Weld says, and I quote, "Ain't hot ridding fun!"
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Scott, that is good info. I bought a used Callies Magnum XL (came in the motor I bought) that was sent out to Marine Crankshaft in Socal for some repair and a cryo process I believe? (I cant' recall - it was well over a year ago now) because it was the only place in the state here that my 70 yr old engine builder trusted. What do you know about the crank? I'll have to see if I can dig up any info on it.
Bryan, not sure I would rush some of these decisions for one event... there will be plenty others and I think I'd want the thing done right -- by the right people. Just feels like that is influencing you quite a bit here and ask that you take a hard look at that thought process. Ya know?
