What does it take to make your diff safe at 350hp
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From: Nashville to Knoxville
cryo treating parts is more complicated than just freezing them, which would in fact make them more brittle. they're put through temp cycles, strengthening them. I just don't know how much stronger they make them. 
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Originally Posted by kalm_traveler,Sep 24 2008, 01:50 PM
everything I've read about cryogenically freezing metal says it makes it more brittle.
With that in mind, you wouldn't want it done to drivetrain components since they see alot of abrubt shocking force.
With that in mind, you wouldn't want it done to drivetrain components since they see alot of abrubt shocking force.
Cryogenic thermal cycling if done correctly strengthens ferrious metal parts. Not a lot of atricles really discuss how much stronger but it is safe to say about 75% stronger. It also reduces stress which negates any drittleness. There is too much to discuss here but here is the short of it.
It increase tensle strength.
Reduces stress.
Increases wear resistance 200-300%.
Increases heat dissipation.
This is why a lot of autocrossers do their rotors.
I do all Puddydaddy's and hart top guy's cryoing. I mostly do the diff housings, bolts, bearings, and gears. depending on how many puddy mods you do, you can safely run 600rwhp or more. THIS DOES NOT COVER REPEATED DROPPING THE CLUTCH AT 7K. Even the in-line diffs won't last very long doing that.
Also, the process does not fix previous damage done to a diff like cracking and breaks.
I was running over 550 rwhp to my puddymod/Sub Zero diff for over 10k with no problems.
I hope this helps.
For more on the subject see.
www.subzerocryo.com
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ur stock diff will last for ever if u take care of it.. and ease off clutch instead of dropping it... < learned my lesson.. 2600 worth on the new puddy mod diff.. and 3200 on a new honda trans... its not a car to be doing dumb shit in... nuff sed... learn to drive smooth.. and ull be fine... added stregnth wouldnt hurt tho...
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From: Salt Lake City, UT
Originally Posted by Sub-Zero,Sep 24 2008, 04:07 PM
Look at little further.
Cryogenic thermal cycling if done correctly strengthens ferrious metal parts. Not a lot of atricles really discuss how much stronger but it is safe to say about 75% stronger. It also reduces stress which negates any drittleness. There is too much to discuss here but here is the short of it.
It increase tensle strength.
Reduces stress.
Increases wear resistance 200-300%.
Increases heat dissipation.
This is why a lot of autocrossers do their rotors.
I do all Puddydaddy's and hart top guy's cryoing. I mostly do the diff housings, bolts, bearings, and gears. depending on how many puddy mods you do, you can safely run 600rwhp or more. THIS DOES NOT COVER REPEATED DROPPING THE CLUTCH AT 7K. Even the in-line diffs won't last very long doing that.
Also, the process does not fix previous damage done to a diff like cracking and breaks.
I was running over 550 rwhp to my puddymod/Sub Zero diff for over 10k with no problems.
I hope this helps.
For more on the subject see.
www.subzerocryo.com
Cryogenic thermal cycling if done correctly strengthens ferrious metal parts. Not a lot of atricles really discuss how much stronger but it is safe to say about 75% stronger. It also reduces stress which negates any drittleness. There is too much to discuss here but here is the short of it.
It increase tensle strength.
Reduces stress.
Increases wear resistance 200-300%.
Increases heat dissipation.
This is why a lot of autocrossers do their rotors.
I do all Puddydaddy's and hart top guy's cryoing. I mostly do the diff housings, bolts, bearings, and gears. depending on how many puddy mods you do, you can safely run 600rwhp or more. THIS DOES NOT COVER REPEATED DROPPING THE CLUTCH AT 7K. Even the in-line diffs won't last very long doing that.
Also, the process does not fix previous damage done to a diff like cracking and breaks.
I was running over 550 rwhp to my puddymod/Sub Zero diff for over 10k with no problems.
I hope this helps.
For more on the subject see.
www.subzerocryo.com
They did several tests (tensile strength, etc etc) and IIRC the untreated metal gave the exact same results.
I believe this is one of the 'new ideas' that falls under the category of automotive myth, similar to to those spark plug wires that were supposed to boost HP, Royal Purple oil being superior to all other synthetics in every way, and cross-drilled rotors expelling gas caused by friction of the pad material (this was true 40-50 years ago when pads were made of asbestos but is not applicable to most modern friction materials used on conventional brake pads).
Of course if someone can find an independant source with proof of the contrary I'm always open to learning something new, it's just never a good idea to trust the marketing propaganda from the company who's trying to sell you their wares.
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[QUOTE=kalm_traveler,Sep 24 2008, 11:32 PM] I'm still looking for the website that did a completely independant study of cryogenically-treated metal and found that it didn't actually strengthen it at all.
They did several tests (tensile strength, etc etc) and IIRC the untreated metal gave the exact same results.
I believe this is one of the 'new ideas' that falls under the category of automotive myth, similar to to those spark plug wires that were supposed to boost HP, Royal Purple oil being superior to all other synthetics in every way, and cross-drilled rotors expelling gas caused by friction of the pad material (this was true 40-50 years ago when pads were made of asbestos but is not applicable to most modern friction materials used on conventional brake pads).
Of course if someone can find an independant source with proof of the contrary I'm always open to learning something new, it's just never a good idea to trust the marketing propaganda from the company who's trying to sell you their wares.
They did several tests (tensile strength, etc etc) and IIRC the untreated metal gave the exact same results.
I believe this is one of the 'new ideas' that falls under the category of automotive myth, similar to to those spark plug wires that were supposed to boost HP, Royal Purple oil being superior to all other synthetics in every way, and cross-drilled rotors expelling gas caused by friction of the pad material (this was true 40-50 years ago when pads were made of asbestos but is not applicable to most modern friction materials used on conventional brake pads).
Of course if someone can find an independant source with proof of the contrary I'm always open to learning something new, it's just never a good idea to trust the marketing propaganda from the company who's trying to sell you their wares.
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From: SK
The pain of removing your diff and shipping it out for cryo is just not worth it.
It's what ballers do to their 1600hp Supra parts...
Buy an upgraded diff. Torsen is maximum fail anyways (relative)
Grab a nice 1.5 way and go hard.
It's what ballers do to their 1600hp Supra parts...
Buy an upgraded diff. Torsen is maximum fail anyways (relative)
Grab a nice 1.5 way and go hard.