Cryogenic Treatment
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Supposedly some engine builders do this to Strengthen Pistons, Rods, And Crank by nitro freezing them to -300F to modify the micro-structure of the material. Has Anyone done this?
Thanks
http://youtu.be/vPURmV8LHEM
Thanks
http://youtu.be/vPURmV8LHEM
Last edited by LTX; 01-16-2012 at 10:53 PM.
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As said it depends upon the degree of depth they cryo it, sometimes machining a part afterward removed the hardened metal. but of course you don't want them to go too deep as it will brittle the part. Chemical hardening is also an option that is used. All your fancy cranks and rods usually have been nitrated to a said depth.
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Agreed, I had a friend get some high end stereo equipment cryo'd. When he went for the initial meeting the guy gave him a razor blade to try out to see how long it would last. He was still using it 6 months later. Whether its worth the cost for a normal guy, probably not!
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If there is really such a significant benefit in strength, the prices are damn well worth it IMO, especially for someone looking for a bit of additional strength without breaking the bank. Was quoted $130 to do a crank, $7.50 per connecting rod and about $340 for a bare block.
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There's a great article about cryo treatments in the last issue of engine professional magazine. Every thing you ever wanted to know.....and maybe more. I'm personally sold on the use of it for some key stressed components. Try this link and start reading on page 48....I think. It's the whole mag online. Just check in the index if page 48 isn't right.
http://www.aera.org/ep/EPQ4-2011/index.html
http://www.aera.org/ep/EPQ4-2011/index.html
#15
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There's a great article about cryo treatments in the last issue of engine professional magazine. Every thing you ever wanted to know.....and maybe more. I'm personally sold on the use of it for some key stressed components. Try this link and start reading on page 48....I think. It's the whole mag online. Just check in the index if page 48 isn't right.
http://www.aera.org/ep/EPQ4-2011/index.html
http://www.aera.org/ep/EPQ4-2011/index.html
Great info!!
Thanks