Cryogenic Tempering

[climaxsr20]

Hi. i was searching around for performance for the sr20det. came upon the Cryogenic Tempering. Does anybody got any information on this? i dont know much but they said like 200-400% longer lasting and performance on parts if you do it? any comments?

[Rosco]

You're talking some serious $$$$.....However, I'm kind of interested in this as well....All I know is that it's alot $$$$....

[climaxsr20]

well i checked this one website and it said complete engine, transmission, clutch for $650 or so and thats for 3/4 cylinder mortors. but you have to have the whole engine stripped apart , part by part. i just want to know if theres any other benefits to doing this process. when doing this like getting your block, pisons, rods, and crank cryogenic tempered does this mean its like getting upgraded parts or does it just prolong the life of your parts and can you get more hp out of it like upgraded parts.

[VitaminT]

I have heard of some FWD SR guys cryo treating their transmission's and maybe a few people doing stock rods but never many if anybody doing their motor/crank/rwd transmission and things like that.

And I should say the people that did it, did it for strength not to prolong the life (maybe that is one in the same).

I think the big thing is it helps some, but still not the same as going from say a cast piston to a forged piston. Plus other than the pistons most engine pieces are good for 400+whp just the way they came.

[straightedge]

the theory is that the cryo process condense's the metal particles. ive heard good things about the cryo process. ive seen it alot on domestics. anything metal that can wear will benefit from this process.

[biglipzit]

it will strengthen the whole block and crank. It breaks down carbon particles in the metal and causes it to form a different type of carbon strata which holds the metal together nad makes it like 100% stronger than metal that isnt cryogenically treated.

[FattyMcBaggins]

This website has some good info about it. I'm thinking about doing it, sounds great! http://www.cryopro.com/index.html

[climaxsr20]

ive read somewhere and it said doing this on aluminum will make it as strong as steel. now if this is true imagine what it can do with the block. that would be awsome. i have also read other forums debating on whether or not it makes the car efficient on gas. so far my guess is that its possible the people that keeps saying that its not a gas saver didnt have any facts.

[straightedge]

it will strengthen the whole block and crank. It breaks down carbon particles in the metal and causes it to form a different type of carbon strata which holds the metal together nad makes it like 100% stronger than metal that isnt cryogenically treated.

i geuss thats what the scientific explanation is. good to know. i havent done too much research into that. and was trying to explain it in simple terms. on the website that was posted it said it makes the metal particles more dense like i thought.

[S13FX]

OK I research cryogenic treatment a while ago, basicly a simple answer to question is. Particles in steel are under pressure, thats why they are bound to break apart when you put more stress on them. So as many of you have guessed by CRYOgenic, they cool down the part down to I think -700kelvins, that literly takes all the particles in the objects and relaxes them.

Afterwards they have to return the part to normal temperature, and that process takes about 72 hours, cause they have to do it slowly that way all the particles in the object are a lot close to each other and they are not under stress like they were before. Another way to kinda look at this is. Take for instance a fulle lenght pencil, it is eazy to break. But when you have a short peace of pencil it is a lot harder to break.

I also heard that a lot of the NAS Car's have thier engine parts cryo treated. Well hopefully this shed some light.

[bdrifta]

I

OK I research cryogenic treatment a while ago, basicly a simple answer to question is. Particles in steel are under pressure, thats why they are bound to break apart when you put more stress on them. So as many of you have guessed by CRYOgenic, they cool down the part down to I think -700kelvins, that literly takes all the particles in the objects and relaxes them.

I have to be honost...i don't quite trust your input...as 0Kelvin is actually -273.15*C or -459.67*F...so the -700Kelvin isn't really a POSSIBLE numer...at 0Kelvin all matter stops moving...its also known as absolute zero...

I do think that youa re on the right track tho.

There is alot of theory behind cryogenic freezing, and all that good whoohaa...but information as to how it works exactly is very detailed, and answer this simple can't really get it all across...

But yes, in your average stainless steel, it will increase life and durability of parts a minimum of 50%...and there isn't only streingth increase...but because there is less flex, and more rigidity in the metals, performance is increased, because effeciency is.

Carefull tho, thinking about all the technical stuff behind it, cryo'ing a valve train, can change the entire resonant frequency. But i haven't done much research to decipher whether it would be better or worse.

[S13FX]

oops my bad I ment to put -70C hehe. It's just my fiance and me were talkin about kelvins last night and her school work and it all got stuck in my head lol

[bdrifta]

Oh, I see. Well i hope i didn't come across rude...

[VitaminT]

Do the overall dimensions of the piece change before and after treatment? For instance is a 86mm piston still 86mm afterwards?

The other question is since steel and aluminum expand and contract at different rates how will the steel/iron sleeves react in an aluminum block?