what does "seasoned block" mean?

[c a m a r o]

and dont tell me its spices.

[Ground Rat]

It's an engine block that has been used for a few years. The repeated heat cycling of regular use causes the metal of the block to settle, the molecules move into an ordered lattice that is much stronger than the disorganization of a fresh casting. These blocks, most often found at junkyards are prized by hot-rodders and rebuilders because they can handle the stress of extreme performance modifications and engine blueprinting.

[454Casull]

Cliff's Notes: A used block.

[SaabJohan]

Under the eighties BMW used cast iron blocks from engines that at least have done 100,000 km for their F1 engines. Later they developed a method to reach the same result from a new block, this was done because the old blocks was stronger.

[454Casull]

Originally Posted by SaabJohan

Under the eighties BMW used cast iron blocks from engines that at least have done 100,000 km for their F1 engines. Later they developed a method to reach the same result from a new block, this was done because the old blocks was stronger.

Do you know anything about the process?

[carguyinok]

"You start out at room temperature, go through about a nine-hour descent to 300 below, once they get there, stay there 24 hours, then come back to room temperature very slowly again. This gives the metal more dimensional stability, and on the steel parts, it actually brings more carbide out to the wear surface. This gives parts much greater stability, wearability, reduced hot spots, increased heat transfer, better and easier machinability, and overall more consistency."

ONE CRYO
]
I know a few people that send off there rod's crank & bearing's for there BB GM's. There more then happy One person I know has had there block done (Real big $$$$$) and he beats the hell outa that thing talking wheel standing power & never had a part fail yet.
I know once I have all my internal parts togather for my TT there being done. I just wish it wasnt so spendy for the block or I would do that.

[SaabJohan]

Originally Posted by carguyinok

ONE CRYO
]
I know a few people that send off there rod's crank & bearing's for there BB GM's. There more then happy One person I know has had there block done (Real big $$$$$) and he beats the hell outa that thing talking wheel standing power & never had a part fail yet.
I know once I have all my internal parts togather for my TT there being done. I just wish it wasnt so spendy for the block or I would do that.

From the research reports I've read cryotechnics only works with some steels, mainly the alloyed tool steels but there are no gains with for example cast iron, so I don't se any point with doing it with a cast iron block. However, with a tool steel crank it might be woth a try.

454Casull: Haven't find anything what process they used, but it was mainly so they shouldn't run out of old blocks so for any own projects an old used block will do fine.