Gear shifter flexing under torque in 4th gear, on 991.2 GT3
06-01-2018, 02:59 AM
#31
I just took delivery on my .2 GT3 and I noticed this right away - only in 4th gear and it moves quite a bit. None of my other GT3/911/GT4 etc cars have ever done this. It is a little annoying. I can see the shifter moving out of the corner of my eye while driving. I think I'm going to have the dealer check it out anyway.
06-01-2018, 03:16 AM
#32
Drifting
Y'all understand that when there's a load on the engine, the engine moves in its mounts right? You can literally see the engine on ANY car rock due to torque. It's normal. That force/motion acts on the transmission too. Because the transmission is literally bolted to the engine. Guess what else is attached to the transmission? The shifter.
06-01-2018, 03:49 AM
#33
Y'all understand that when there's a load on the engine, the engine moves in its mounts right? You can literally see the engine on ANY car rock due to torque. It's normal. That force/motion acts on the transmission too. Because the transmission is literally bolted to the engine. Guess what else is attached to the transmission? The shifter.
06-03-2018, 10:03 AM
#35
Instructor
I reactivate this older thread here. My GT3T shows exactly them same pattern: Shifter slightly moves forth and back when engaging the gas pedal. This only happens in 4th gear. In the German Porsche Forum PFF, there is a pretty heated debate now whether this is heralding a transmission failure, or whether this is just normal for a manual GT3 / R. Any more insights?
Best
Tobias
Best
Tobias
06-03-2018, 10:18 AM
#36
Racer
GT3 Touring owner experiencing the same
My GT3 Touring has similar behavior in 4th .. Probably a defining tract of this gearbox.
Maybe the engine mounting supports allow a bit more of movement at low rpm and with the additional torque of this mk2 engine we end up with a more noticeable gearshift movement ...
Maybe the engine mounting supports allow a bit more of movement at low rpm and with the additional torque of this mk2 engine we end up with a more noticeable gearshift movement ...
06-03-2018, 12:12 PM
#38
The guy in the german forum mentions two owners that he knows himself that had transmission failures and got theirs replaced. Many more report the movement of the stick in 4th gear, others say they don't see it. Without a recall or something official from Porsche it's all guesswork.
06-03-2018, 12:27 PM
#39
The guy in the german forum mentions two owners that he knows himself that had transmission failures and got theirs replaced. Many more report the movement of the stick in 4th gear, others say they don't see it. Without a recall or something official from Porsche it's all guesswork.
I 've owned many manual Porsches and currently a 981 Spyder and they have all been tight as a drum, so i don't believe its a normal characteristic of the GT3's manual..
06-03-2018, 12:35 PM
#40
Drifting
The guy in the german forum mentions two owners that he knows himself that had transmission failures and got theirs replaced. Many more report the movement of the stick in 4th gear, others say they don't see it. Without a recall or something official from Porsche it's all guesswork.
I know for a fact that a manual GT3 exhibiting this movement, had the whole gearbox replaced under warranty..I know this is true as the afflicted GT3 was delivered by my local OPC(UK based)..I think it's a more widespread problem than we realise, and i'm not surprised its linked to gearbox failures..
I 've owned many manual Porsches and currently a 981 Spyder and they have all been tight as a drum, so i don't believe its a normal characteristic of the GT3's manual..
I 've owned many manual Porsches and currently a 981 Spyder and they have all been tight as a drum, so i don't believe its a normal characteristic of the GT3's manual..
You say gear lever movement is a "widespread problem." Why? Why is it a problem? And how is it "linked to gearbox failures"? In what, specific way is this linked to a failure? And what is that failure?
06-03-2018, 02:36 PM
#42
Same here.
One of the main advantages of a cable shifter (as newer 911s have) vs a pushrod (like older 911s, 944s, etc) is that it isolates the shifter from any engine movement. This leaves the engine free to rock and roll while the shift lever stays steady.
Unfortunately I suspect the noted 5mm of lever movement, only in 4th gear, indicates an internal issue in the gearbox. I can’t say for sure if it’s a problem (could be that’s OK) but the fact that most of us don’t get that movement makes me suspect it is- something moving on a shaft that shouldn’t be, most likely...
One of the main advantages of a cable shifter (as newer 911s have) vs a pushrod (like older 911s, 944s, etc) is that it isolates the shifter from any engine movement. This leaves the engine free to rock and roll while the shift lever stays steady.
Unfortunately I suspect the noted 5mm of lever movement, only in 4th gear, indicates an internal issue in the gearbox. I can’t say for sure if it’s a problem (could be that’s OK) but the fact that most of us don’t get that movement makes me suspect it is- something moving on a shaft that shouldn’t be, most likely...
06-04-2018, 12:07 PM
#44
Race Director
That is what warranties are for. I am not concerned one bit and "FourT6and2" raises some good questions before we relate some gear shift movement in 4th to transmission failures.
Be interesting to see if this is the same in a 911R??
Be interesting to see if this is the same in a 911R??
06-04-2018, 01:48 PM
#45
Wondering if there are any carbon pieces in the linkage somewhere?
(I got told such a piece is the reason why my car is delayed and have not specced any 'cosmetic fiber')
(I got told such a piece is the reason why my car is delayed and have not specced any 'cosmetic fiber')