Cryogenics

[Jeff Stout]

Originally Posted by SBillinson

I welded a set of aluminum heads and sent them to 300 Below for cryo. The heads machined better and were much harder than as cast. The heat affected areas on the deck where super hard and gave my surfacer a work out.

I have three aftermarket cast iron blocks that I'm sending to cryo because, in part, I want them a little harder. I do have to weld two of them. Cryo strengthen not only the weld, but the transition between the weld and base material. It also stress relieves the part.

I have a set a pistons that I need profiled for a new chamber. I don't expect much material to be removed from the dome, but nevertheless will send them to cryo for good measure.

The bottom line: Cryo works. I wouldn't think twice about doing a crank, but don't know if I'd do a set of rods. I also wouldn't hesitate to do a set of rockers.

300 Below charges by the pound.

We found the same thing with cryo heads. The cleaned up better and held up better with alot of nitrous