| With help .. I tore down the transmission today and looked into all the bearings ( pivot, throw out, countershaft, input ~ front , rear, and main, misc that I am not mentioning ) ....all the bearings seem fine ... I have about 20K on this tranny at 600rwhp plus. Upon further inspection, it looks like 4rth gear is starting to show signs of small wear. The countershaft gear ( ?? ) that it interacts with has real small signs of wear. Based on the way it was explained to me the 4rth gear is always distributing an engine load even when not in 4rth gear. Looking at the tranny parts visually, you can see that 4rth gear is always in motion, just not engaged until that gear is selected. It seems that my 4rth gear can not support the power levels that I am at indefinitely. This would also explain my tranny failure 2 years ago when I was speed shifting a lot. This tranny "blewup" from a 3rd to 4rth shift ( no synchro issues also). Below are some pics. You can't see the 4rth gears with enough detail to see what I am talking about. My options at this point are 1) to probably take all the gears and bearings including a new 4rth gear and get it cryno treated to see if that will increase the longevity. 2) Throw it back together as is and cross my fingers 3) Buy another used tranny while I get this one cryo treated. Decisions Decisions .. enuff talk ..a few pics ...
first a lovely pic of my SZ cracked split downpipes ..
I tried to repair these myself ( because they have cracked 2 times already) - so i can't return them :( 
Flywheel side of tranny housing 
Tranny housing assembled
Input shaft / Countershaft / Gears 
Right side view 
Left to Right on the top: Input shaft
1rst gear / Synchro / 2nd gear / 3rd gear / Synchro / 4rth gear on the bottom: Countershaft Countershaft gears 
Back half of the bell housing 
Neutral / 5th gear / Reverse 
Looking over all the gears and bearings 
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"....Thanks captain obvious, would you recommend air to resolve a low tire pressure situation? coolant to keep temps down? perhaps a battery for electrical devices? " ... LJZTT on June 10, 2006 at 6:36 PM
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"as useless as an EGT Gauge..." *shakes head* Its comments
like this that hold the Z32 community back. " ....Z-Jay (Edmonton, AB) on April 21, 2006 at 11:46 AM "Somebody give this man a medal. Arguing with kenny is like being in the special olympics" ....ENVYMYZ on November 01, 2005 at 11:59 PM " .. going back and forth with you on a stupid point is like watching a retarded kid double dribble in basketball, you get tired of calling foul all day" ... Slowninja(GT28RS Inconel Z) on October 03, 2005 at 8:43 AM "the only chips you know about are Doritos. =)" ...ZEngineer on June 11, 2005 at 4:23 PM "....These posts only serve to make you look even worse, its gotten so bad it even makes me look bad to reply to you...." maglito on January 22, 2005 at 3:11 AM "What, are you afraid that only a couple of good ones have rolled off the production lines and the rest are crap?? ... Its mechanics not the stockmarket." ... ZisLuv on May 03, 2004 at 6:12 PM 
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Transmission update for High RWHP Z's : Power Issue - 
04:55:42 12/31/06
