Subject	cryo treating DOES change dimensions, but barely
Posted by	jkeyser14 on December 29, 2006 at 3:35 PM
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In Reply To	You are correct in the sense that martensite is lower posted by CaliguyPurdue on December 29, 2006 at 03:01 AM
Message	cryo treating changes the grain structure which does alter its size slightly (grows a tiny bit), just like any heat treatments. However, the size difference will probably be on the order of a tenth of a thousandth of an inch. I doubt that will have any negative affect the transmission bearings, they are not super high precision bearings (ABEC-7, $700+ each, etc.). If anything, it might reduce the runout a bit. John EngineeringHobbyist.com
Follow Ups	Potential Transmission Issue for HIGH RWHP Zs ??? - The Devils Z 00:27:39 12/29/06 I have that same exact sound. - WAGGZ 00:36:17 12/29/06 It only makes sound when the clutch is *engaged* (n/m) - WAGGZ 00:37:34 12/29/06 mine did the same thing, but i just put in a new, used,.. - octavian-z 00:44:08 12/29/06 right - WAGGZ 00:47:04 12/29/06 I broke my tranny two days after getting it tunned - octavian-z 00:38:23 12/29/06 Supra OEM 6spd supports 1500hp without treating - kryptonite729@VP 01:24:02 12/29/06 Thats if you find a Supra with a 6spd, its funny that almost - Eishozzzz 02:23:38 12/29/06 I wish that we had a trans that durable... (n/m) - Kong ZTT GT28RS MD 12:26:29 12/29/06 Could be worse! We could be driving Subarus! - CaliguyPurdue 12:45:27 12/29/06 LOL! (n/m) - Ash's Z 15:30:28 12/29/06 How was the trans broken in, and what oil did you use? (n/m) - ENVYMYZ 00:47:27 12/29/06 Cryo-treating after it's already fubar'd is putting the cart - Kenny 01:03:47 12/29/06 Cryo-treat the replacement bearings. - Ash's Z 02:25:56 12/29/06 Ash, i dont think cryo treating changes the dimension's - Eishozzzz 02:36:38 12/29/06 You are correct in the sense that martensite is lower - CaliguyPurdue 03:01:54 12/29/06 I think the idea of making a substance harder without making - Ash's Z 15:23:43 12/29/06 Why are you explaining that to Jim? (n/m) - Kenny 15:42:00 12/29/06 Wasn't really - just bouncing the ideas off of someone - Ash's Z 16:42:53 12/29/06 *decreases density... (n/m) - CaliguyPurdue 15:53:52 12/29/06 In an ideal world, cost wouldn't be an issue :) - CaliguyPurdue 16:06:34 12/29/06 Interesting you bring that up. I attended a lecture a few - Ash's Z 16:49:03 12/29/06 Well I'll take that as a huge compliment... - CaliguyPurdue 18:33:45 12/29/06 cryo treating DOES change dimensions, but barely - jkeyser14 15:35:38 12/29/06 Replacing any of the bearings in our trannies is a very - Ash's Z 02:21:54 12/29/06 And I might add the fact that to remove the input shaft, - Ash's Z 02:33:21 12/29/06 solution>>>>>>>>>>>>> - Antonio(AZ) 08:16:28 12/29/06 Tranny and diff coolers for hi HP Zs is a great idea. (n/m) - BigTDogg (MA) 08:42:48 12/29/06 this would be a nice mod. I'd buy it if it was available - The Devils Z 09:38:02 12/29/06 european Z32 MT gearboxes have oil cooling in stock form - lymon 12:10:04 12/29/06 Yes please do! If folks wanted to do this OEM would be - CaliguyPurdue 12:40:19 12/29/06 Agreed (n/m) - The Devils Z 13:09:52 12/29/06 If I remember correctly... - NobleZ 10:06:12 12/29/06 You sure he wasn't talking about an auto tranny? - RSR 10:15:08 12/29/06 Pilot bushing/needle bearing :) - BigTDogg (MA) 08:44:21 12/29/06 yeah --- replacing that as well. I physically didn't tear - The Devils Z 09:36:59 12/29/06 Throwout bearing. - eriksu9 09:44:19 12/29/06 2nd that! (n/m) - MULTI-Z 11:25:38 12/29/06 What Dee is describing is the input shaft bearing. - Only1Z 11:54:45 12/29/06
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