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Old 10-16-2016, 06:27 PM   #61
VerusEric
 
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Join Date: Mar 2015
Drives: BRZ, STI, GT350R, Supra, 987.2
Location: Indiana
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Quote:
Originally Posted by MSTiFK8R View Post
Add me up to the carnage list, my 4th has left me for good.

Racetrack event, sticky 265's semislicks and the 4th grenaded...

The gearbox has passed quite fun 15K miles, mostly on FI with different setups from 300 to 420hp but never on that kind of stickies - maybe that prolonged its life.
Tires/driveline setups definitely influence the shock loads the gears see, which is why it's so difficult to put a hp/tq number on when 4th gear fails. Thanks for sharing!

I tore apart another local's transmission on Friday night. 380-420 whp, driving fine then one day 4th was lost. I knew what was the cause before I tore into it but below is the carnage, which isn't terrible, but will require a countershaft for repair as well as a few other parts.





Thanks,
Eric
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