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Old 03-13-2013, 10:40 PM   #1
EchoFourBravo
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Default This is what will eventually go wrong when you power shift.

http://www.youtube.com/embed/Uf9NzVRWySE

By all means, power shift away! If you mess up though, this is what will eventually happen. The bill for this will be ~$2,000.
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Old 03-15-2013, 01:20 AM   #2
Turn in Concepts
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That, sir, is not only a GREAT video to make the point, but also a good overview of the guts of the tranny and how things work.

My hat is off to you!
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Old 03-15-2013, 12:21 PM   #3
EchoFourBravo
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Maybe I can get a discount next time I order parts?
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Old 03-15-2013, 01:52 PM   #4
Concillian
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Yes that was a very educational video.

Seeing those splines completely distorted and misshaped... wow. Lots of force in there.
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Old 03-15-2013, 02:11 PM   #5
xluben
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Wow, that was a great video! It looks like the burrs created by forcing the transmission into gear were interfering with proper operation. Were the synchro cones completely worn out on this tranny? Or is it possible to force it into gear (before synchronization) even with a working synchro? I understood that it would be more or less "locked out" until it all came up to speed (assuming the synchro is working properly).

Another note is that the 2nd gear dog teeth are not symmetrical like the 1st gear teeth. I don't have a photo of each gear seperately, but here's a photo of my blown up gearset. I believe you can see the symmetrical dog teeth on 4th (like 1st in your video), and non symmetrical teeth on 2nd and 3rd. Any insight on why they are different?

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Old 03-15-2013, 02:54 PM   #6
EchoFourBravo
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Quote:
Originally Posted by xluben View Post
Wow, that was a great video! It looks like the burrs created by forcing the transmission into gear were interfering with proper operation. Were the synchro cones completely worn out on this tranny? Or is it possible to force it into gear (before synchronization) even with a working synchro? I understood that it would be more or less "locked out" until it all came up to speed (assuming the synchro is working properly).

Another note is that the 2nd gear dog teeth are not symmetrical like the 1st gear teeth. I don't have a photo of each gear seperately, but here's a photo of my blown up gearset. I believe you can see the symmetrical dog teeth on 4th (like 1st in your video), and non symmetrical teeth on 2nd and 3rd. Any insight on why they are different?

They're probably different because they're engaged at more speed than than 1st is (which is usually with the car stopped). For the rest, I don't know. The synchros were fine though.
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Old 03-15-2013, 10:10 PM   #7
97cv
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Is there a marked photo I can see ?

I'm very interested in how the 5mt works and this thread is all I've come across with any explanation.
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Old 03-16-2013, 02:39 PM   #8
EchoFourBravo
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I guess I'll make a video of how a 5mt works, it's seemed pretty popular so far. I just replaced mine with a PPG one and think mine had a bearing go out. I won't promise a time, but look forward to it
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Old 03-16-2013, 03:44 PM   #9
PSolbergfan
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This should a sticky thread in this and all "noob" forums.
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Old 03-16-2013, 05:38 PM   #10
FuJi K
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The 1-2 would have been better if Subaru gave us a shorter 2nd gear like a 2.062 ratio, or ran the same gear set they had since the Ver5 GC8. The big gap in gear spacing makes the synchro work harder when shifting fast. you could reduce the wear by running a lighter clutch disc.
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