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Old 03-10-2013, 03:32 PM
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BG
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Default Adding a Manual

So it might me a bit early to ask this question since none of the Porsche tuners have seen the car but i can't help but wonder how hard it would be to pull the PDK and put in the manual from the 997 GT3.
It would be an expensive proposition but possible i would think.
Old 03-10-2013, 03:43 PM
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StirlingMoss
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Why oh why would you do that? Not only expensive but would ruin the car too. Buy a 997 4.0 RS instead.

Oh hang on, maybe you could call Preuninger and ask if you can buy the prototype manual gearbox which they gave up on.
Old 03-10-2013, 03:49 PM
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BG
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Originally Posted by StirlingMoss
Why oh why would you do that? Not only expensive but would ruin the car too. Buy a 997 4.0 RS instead.

Oh hang on, maybe you could call Preuninger and ask if you can buy the prototype manual gearbox which they gave up on.
I think the price of the 997 4.0 RS just went way up.
Old 03-10-2013, 03:52 PM
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StirlingMoss
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Originally Posted by BG
I think the price of the 997 4.0 RS just went way up.
Yeah, right up there with the 2.7 RS, 964 RS, 993 RS and original 996 GT RS. All keepers.
Old 03-10-2013, 04:08 PM
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10 GT3
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Originally Posted by BG
So it might me a bit early to ask this question since none of the Porsche tuners have seen the car but i can't help but wonder how hard it would be to pull the PDK and put in the manual from the 997 GT3.
It would be an expensive proposition but possible i would think.
The Getrag manual in the 997 GT3 won't mate with a 9A1 based engine. Likewise, the 9A1 PDK will not make to a Metzger block. The only manual option for a swap will be the 7-sp PDK based manual in the new Carrera S. While is has a manual clutch pedal and a shifter, it isn't a true manual. It just mimics one. The shifter actually has no mechanical linkage to the transaxle. It is just an electronic control.
Old 03-10-2013, 04:19 PM
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GrantG
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Originally Posted by 10 GT3
The shifter actually has no mechanical linkage to the transaxle. It is just an electronic control.
I don't think that's right. I think there is a mechanical connection, but with a device that remaps the shift pattern into the double-H. I'm pretty sure it's a cable mechanism like all the other water cooled 911s...
Old 03-10-2013, 04:34 PM
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StirlingMoss
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The mechanical part is probably the smallest, because even if you manage to somehow attach a gearbox imagine all the electronics you need to fiddle around with. Cables, control units and software (!). The car is built for PDK and only understands PDK.

Not to mention reliability, durability and safety.
Old 03-10-2013, 04:37 PM
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uhn2000
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I have a deposit for the GT3 and I am just so torn inside about the transmission. Like I told my wife I am crazy nervous about owning a PDK car after so many years of MT only.
Old 03-11-2013, 03:57 AM
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Rushman71
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Originally Posted by 10 GT3
The Getrag manual in the 997 GT3 won't mate with a 9A1 based engine. Likewise, the 9A1 PDK will not make to a Metzger block. The only manual option for a swap will be the 7-sp PDK based manual in the new Carrera S. While is has a manual clutch pedal and a shifter, it isn't a true manual. It just mimics one. The shifter actually has no mechanical linkage to the transaxle. It is just an electronic control.


Where do you get this stuff? The 7 speed is a traditional cable operated box with a single clutch disk that share a few parts with the PDK box for cost savings.

It's funny how many people on this board "know" things that just happen to be wrong.
Old 03-11-2013, 09:50 AM
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BG
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Originally Posted by 10 GT3
The Getrag manual in the 997 GT3 won't mate with a 9A1 based engine. Likewise, the 9A1 PDK will not make to a Metzger block. The only manual option for a swap will be the 7-sp PDK based manual in the new Carrera S. While is has a manual clutch pedal and a shifter, it isn't a true manual. It just mimics one. The shifter actually has no mechanical linkage to the transaxle. It is just an electronic control.
Why can't the Getrag manual mate with the 9A1 engine? Other than a different bell housing I don't know what the problem is.

The PDK based 7 speed manual in the 991 Carrera would not be an option for me. I drove a 991 manual and compared to the Getrag in my 997.1 GT3 it's vague, doesn't have the direct rifle bolt action feel of the Getrag and doesn't belong in a GT3.

Last edited by BG; 03-11-2013 at 04:57 PM.
Old 03-11-2013, 10:16 AM
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Want a 991 GT car....but absolutely need a manual....insist on it being a Hans Mezger* involved/influenced/breathed on engine....and must have sport bucket seats ...

well its a V8....but it does qualify on the other counts:

http://www.ruf-automobile.de/index.php?id=36

*Seem to recall that Hans worked/assisted Ruf on the V8....but i could be wrong.
Old 03-11-2013, 11:07 PM
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10 GT3
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Originally Posted by Rushman71


Where do you get this stuff? The 7 speed is a traditional cable operated box with a single clutch disk that share a few parts with the PDK box for cost savings.

It's funny how many people on this board "know" things that just happen to be wrong.
Have you actually looked at one? Surprise, the only differences between the PDK and 7-sp manual are the clutch, input shaft, 3rd and 7th gears. Look at the exposed pictures and ask where exactly does the linkage go?

http://www.germancarforum.com/commun....39091/page-20

BTW, I didn't realize this was true until I drove one. When you drive it, think about how you can't feel anything from the shift linkage in the shifter. You can't feel any of the gear motion through the shifter, yet it is extremely light. That's not by accident. Just like in the PDK car, you even still get a indicator on the dash for which gear you are in.

Here is another article that talks about the module that interfaces to the shifter:

http://brakebanzeen.com/2012/06/07/b...transmissions/

BMW and GM are going the same route. The new Corvette has a version of the same 7-sp transaxle, but comes with both the 7-sp gear shift and paddle shifters.

Originally Posted by BG
Why can't the Getrag manual mate with the 9A1 engine? Other than a different bell housing I don't know what the problem is.

The PDK based 7 speed manual in the 991 Carrera would not be an option for me. I drove a 991 manual and compared to the Getrag in my 997.1 GT3 it's vague, doesn't have the direct rifle bolt action feel of the Getrag and doesn't belong in a GT3.
Even if you could make an adapter to adapt the 6-sp to a 9A1, it would still never fit in the chassis. Remember that the PDK/7-sp manuals are both over 2" shorter from axle stub to bell housing than the G96/G97 transaxles are. That's how they were axle to stretch the wheelbase on the 991 while leaving the engine in the same location. My .02, if Porsche isn't going to race it then I don't want it in a GT3.
Old 03-11-2013, 11:39 PM
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Justin N
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In the image in the first link on germancarforum the linkage looks to be right below the number 6 in the diagram. In the second link the author is talking about a new patent by BMW( reference to Munich where BMW is from, not Stutgart). The author was simply commenting how Porsche has continued to develop a 7 speed and BMW has followed suit by releasing a new type of manual transmission.
Old 03-11-2013, 11:44 PM
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So put the new Ricardo built Cup Car sequential into the car when it comes out. Can't cost more than six figures to install, if you must have both a new car and a manual.
Old 03-12-2013, 12:13 AM
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Originally Posted by 10 GT3
Have you actually looked at one? Surprise, the only differences between the PDK and 7-sp manual are the clutch, input shaft, 3rd and 7th gears. Look at the exposed pictures and ask where exactly does the linkage go?
..
https://rennlist.com/forums/9056218-post10.html


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