S2000 Under The Hood S2000 Technical and Mechanical discussions.

Is Cryo treating the 4.77 gears necessary?

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Old Feb 19, 2004 | 06:51 AM
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Default Is Cryo treating the 4.77 gears necessary?

I am about to pick some up and was wondering if this was needed... of course the added strength would be better, but I was just curious if it was 100% NECESSARY? I don't do clutch drops or anything, but I do drive fast and shift fast often. Any input would be great. Just curious if I could save the extra cost Thanks!
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Old Feb 19, 2004 | 08:13 AM
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I was wondering the same thing...
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Old Feb 19, 2004 | 08:24 AM
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If you drive your S2000 agressively, you would need the gears cryo treated. It's worth it.
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Old Feb 19, 2004 | 11:33 AM
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No, but for $50 to $75 you can't go wrong. Why not have the peace of mind?
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Old Feb 19, 2004 | 11:36 AM
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Originally posted by Big Ben
No, but for $50 to $75 you can't go wrong. Why not have the peace of mind?
Seriously. If you put the gear in without cryo treating it, you're gonna knock yourself in the head for not doing it later down the road, trust me. If you can afford the FD and installation, why not go for a little extra peace of mind for a miniscule 50 dollars?
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Old Feb 19, 2004 | 03:20 PM
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Where can I get it done for 50 bucks at?
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Old Feb 19, 2004 | 08:51 PM
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Originally posted by Chitah831
Where can I get it done for 50 bucks at?
Look locally around where you live. Cryo treatment facilities are more common than you think. What you want to do is get your ring and pinion cryo'd when the cryo guy has a full load of parts booked for freezing. My local cryo guy will cut the price if he's got a full load. Plus, if you get it locally done, you don't have to pay for shipping there and back and run the risk of losing it in transit. And you're supporting a local business.

Chris.
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Old Feb 20, 2004 | 02:56 PM
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Let's see - less 200 pounds of torque, hardened gears - they need cryo treatment for that? Why not use the old reliable method - shot peening?
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Old Feb 20, 2004 | 06:24 PM
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I'd be reluctant to subject an expensive gear set to any heat treatment unless I knew of what alloys the gears are made, how the gear was machined & how the gear was heat treated and how the gear was ground. It seems that although cryo treatment may generally be a good thing, you really don't know if it is a good thing for your gear unless you know an awfull lot about your gear.

See:

http://lennon.pub.csufresno.edu/~rlk16/cryo.html
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Old Feb 20, 2004 | 06:55 PM
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I have been trying to justify cryo treatment for 10 years. 8 in aerospace hydraulics and 2 in firearms. Lots of data from suplliers but their claims are not supported in Research and Developement. And I do a lot of R&D. I have no experience with gear systems; and cryo may be the Holly Grail. Any suppliers out there I have a large budget to test your claims....please PM me.

Utah
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