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87+ manual transmission destruction, rebuilding, discussion etc....

 
Old 08-31-2018, 08:31 PM
  #61  
ptuomov
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I don’t know but the West Germans swear these are the last two in the world and I own more than two broken transmissions that need them.

Unless the marketing firm Porsche stops failing to step up, someone else needs to start making these gears.

Go watch the Atomic Blonde for soundtrack!

Last edited by ptuomov; 08-31-2018 at 11:00 PM.
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Old 09-04-2018, 07:54 PM
  #62  
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Default Atomic Blonde fifth gears

Made in West Germany, baby, 1987. Two sets of G28.13 gear sets assemblies, airlifted thru time and space. Back when the evil empire controlled half the world and new cars didn’t have “eco buttons” and ten forward gears...



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Old 09-04-2018, 07:56 PM
  #63  
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Old 09-05-2018, 02:26 PM
  #64  
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The Last of The Mohicans:


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Old 09-05-2018, 02:40 PM
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They do that 'notching' thing on the G28.57 layshaft 5th gear as well.

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Old 09-12-2018, 05:28 PM
  #66  
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There's a bit more aftermarket notching on this fourth gear:


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Old 09-12-2018, 06:46 PM
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Aw hell, was that in the California box or the Illinois box?
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Old 09-12-2018, 06:48 PM
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Originally Posted by Rob Edwards View Post
Aw hell, was that in the California box or the Illinois box?
the original from my car
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Old 09-12-2018, 07:01 PM
  #69  
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. How did you manage to kill 4th and 5th gear at the same time? :-)
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Old 09-12-2018, 07:08 PM
  #70  
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Originally Posted by Rob Edwards View Post
. How did you manage to kill 4th and 5th gear at the same time? :-)
I've got a bunch of these transmissions that need the fifth gear. Would buy more if they'd still have them...

I'm having a lot of the used gears inspected and magnafluxed and then we'll see what's usable and what's not.
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Old 09-13-2018, 03:11 AM
  #71  
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Default How about this?

Would filling the webbing / space between these ribs help stabilize the case?



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Old 09-13-2018, 03:16 PM
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Question: Does anyone have used (or new, but probably not) LSD rear ends for sale that could be fitted to an open-differential G28.13?

What have those been going for recently in terms of $?

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Old 09-13-2018, 11:10 PM
  #73  
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I think it is time for you to ante up for a billet case...... but then again that is just an idea.
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Old 09-13-2018, 11:31 PM
  #74  
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Originally Posted by 928sg View Post
I think it is time for you to ante up for a billet case...... but then again that is just an idea.
Right now, I'd settle for part number 92833205220.

The reason to make a new case would have to be based on some data that would prove or at least strongly indicate that the problem is the case. Then, I think we'd prototype cast it using 3D-printed sand patterns, machine it, and see if the theory was correct. I don't think carving things out of big blank aluminum blocks is where it's at for this kind of project.

In any case, this transmission project is like the US joining WW2. Everything else is completely uncertain and unknown except who's going to win.
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Old 09-13-2018, 11:34 PM
  #75  
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Originally Posted by ptuomov View Post
Right now, I'd settle for part number 92833205220.

The reason to make a new case would have to be based on some data that would prove or at least strongly indicate that the problem is the case. Then, I think we'd prototype cast it using 3D-printed sand patterns, machine it, and see if the theory was correct. I don't think carving things out of big blank aluminum blocks is where it's at for this kind of project.

In any case, this transmission project is like the US joining WW2. Everything else is completely uncertain and unknown except who's going to win.
The irony is that I parted out two of the 28 13 boxes years ago and sold the cases as scrap...... no one thought they were worth $100. I think I sold a box of interior scrap bits to GB for a paltry amount.
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