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A person on ebay has this 308 that has been cryogenically frozen for 3 days.
Not up with my metallurgical studies, but I imagine this would in some way alter the youngs modulous of the metal, there by making stronger perhaps.
Seems somewhat extreme.
Anyone heard of this before....?
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yeah ive heard of it, there was a write up in a magazine (possably street machine) a few years ago
the engine and parts are dunked in liquid nitrogen for a few days, the result is supposed to be better the shot peaning and heat treating
the process is quite expensive too
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yep, all the pro stock boys in drag racing here in australia were swearing by it for a while there, something to do with the molecular structure,for intance, alloy conrods, stopped them from stretching or some rubbish like that
I innovate, never imitate..
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I wonder if it "Polarises" the molecular structure. Maybe Brocky is still at it!
Cheers
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ive heard of pistons, valve springs and gear clusters, but never a whole block!
Link to ad?
11.38@117
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ad is in ebay for a wb one tonner in Jimbooba QLD
item 330393126776
Apparently one of the advantages is it greatly improves metals ability to resist wear ( by as much as 200% maybe )
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thats the one...notice he says whole motor was frozen.
It cost $400 for 3 full days.
So if the claims were true it might well be worth it....imagine this a holden motor lasting as long as a jap one...
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cant imagine the cryo process being fantastic for things like valve stem seals, internal gaskets (oil pickup springs to mind) etc.
Not to mention the bearing lubes, moly grease on the cam lobes etc.
I hope the whole lot wasnt dunked fully assembled :(
11.38@117
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It doesnt work on everything. If i remember, best on forged components, but suitable on most.
The construction process alters the grain structure of the metal, leaving some weak spots. The cryogenic process takes the parts to ultra-low temp, which alters their state, and when theyre gradually returned to normal temp, the structure returns to normal state much more evenly and uniformly.
Mate of mine had his gearbox internals done for a 650hp rotor street/strip car.
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"Silly modern cars" |
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