Chasing Manual Transmission Bliss
#19
Pro
Inspired by this thread I have 3 liters of PTX on the way and will give a report on whether/how this helps my occasional struggle to get into first in my 63,500 mile '07 C2. I also have motor mounts on the way but will do them and the gear oil at different times.
#20
Pro
It's so funny that people use Japanese transmissions (such as the S2000 - which I know is among the best shifting cars around) as the goal to strive for, yet we have a Japanese transmission in our cars that shifts poorly.
I have a 997.2 C2S with these same issues. I agree with Bruce on shifter alignment. Won't help. I'm surprised people report that new motor/trans mounts help - I suppose this could increase the leverage one makes during the shift (higher percentage of energy from your hand being delivered to the transmission vs getting used up as slop from engine mount movement) but it seems a stretch. At the same time, I believe those who say it's helped.
The only real fix I have found in other cars is a synchro replacement, or a fluid change. I switched to BG Ultraguard fluid on another car of mine and it immediately fixed the issue. But I'm not sure how much I want to experiment with fluids on my expensive Porsche transmission.
I have a 997.2 C2S with these same issues. I agree with Bruce on shifter alignment. Won't help. I'm surprised people report that new motor/trans mounts help - I suppose this could increase the leverage one makes during the shift (higher percentage of energy from your hand being delivered to the transmission vs getting used up as slop from engine mount movement) but it seems a stretch. At the same time, I believe those who say it's helped.
The only real fix I have found in other cars is a synchro replacement, or a fluid change. I switched to BG Ultraguard fluid on another car of mine and it immediately fixed the issue. But I'm not sure how much I want to experiment with fluids on my expensive Porsche transmission.
#22
Aaks - I should mention that double clutching into 2nd nearly eliminates the issue. I read somewhere that the .2 does not need the salve cylinder bled. Is that true about the master?
#23
Burning Brakes
how many liters to be safe ...
can anyone who changed the transmission fluid confirm that 3 liters of the Moble PTX is enough? At $36.50 per liter and a week to get it, wondering if I need 3 or 4 liters to be safe. Definitely going to try this.
#25
Rennlist Member
I've got upgraded Wevo Motor mounts on my car. Silky smooth shifting into every gear.
#26
Burning Brakes
#27
Addict
Rennlist Member
Rennlist Member
93Jaffe - Just a point that I may get flamed for...I don't consider the 911 Porsche a luxury vehicle, it is a sports car. It won't feel like a Honda in any way (I had a few Honda vehicles early on), but as you progress more into the Porsche ownership you will learn to cherish the differences and realize the car is purpose built and German. The shifting experience you are having are typically due to wearables that need to be taken care of (mounts), so do that and the shifting will get smoother, but not light and easy like a Honda. From the pedals to the steering to the shifter, the movements require strong engagement which you will get more used to as it is change from where you are coming from, but in the end I bet you will get to the point of enjoying the increased engagement and feeling of the car. I wish the shifting was a bit more smooth, but in all honesty the transmission and clutch was built to withstand much more than street driving (I assume this is where the heaver shifting comes from), which is where your new vehicle will shine beyond your expectations...on the track. I've done a lot of track driving and out of the box the 911 can handle anything thrown at it. Yes, the 911 has become more luxury focused as it has progressed, but its soul is still a sports car built to be used that way, so enjoy learning more about it.
Enjoy the transition and the car...it is a bit of a disease.
-Skip
Enjoy the transition and the car...it is a bit of a disease.
-Skip
#28
I switched to Motul Gear 300 a while back and it really helped the cold 1-2 shift. I also found that if I really push down hard on the pedal (almost to the point where I feel like I'm crushing the carpet behind the pedal), I get good 1-2 shifts even when cold. I do double clutch sometimes too just for the hell of it.
#29
OP... Do you have a short shifter kit installed? You said you adjusted cables. Does your shift box have a blue plastic cover around base of the shift lever? Or is your shifter after market?
My 2006 C4S feels great 99% of the time with the OEM short shifter. Occasionally I feel it bind up trying to go into first, but it's not a source of frustration. Just a quick adjustment going into 2nd then 1st, but does not happen often or to the point of any frustration.
I agree with fresh motor mounts and maybe even a new transmission mount for cars with high mileage. Any play or movement eliminated will help precision... but as far as going after market with stiffer engine mounts or transmission inserts... just be aware, they do help precision, but also the stiffer the motor mount/ trans insert, the more vibration you will feel from the engine. The less refined your car will feel also. For some guys they want the sizzling vibration and louder sound at all times and they want to hear every little rattle in their car, but for others we like to keep some refinement, especially for daily drivers. The old oem mounts can sag up to an inch or more and that creates some play and delay for driver inputs. So that would be an avenue I would recommend as well. +1
My 2006 C4S feels great 99% of the time with the OEM short shifter. Occasionally I feel it bind up trying to go into first, but it's not a source of frustration. Just a quick adjustment going into 2nd then 1st, but does not happen often or to the point of any frustration.
I agree with fresh motor mounts and maybe even a new transmission mount for cars with high mileage. Any play or movement eliminated will help precision... but as far as going after market with stiffer engine mounts or transmission inserts... just be aware, they do help precision, but also the stiffer the motor mount/ trans insert, the more vibration you will feel from the engine. The less refined your car will feel also. For some guys they want the sizzling vibration and louder sound at all times and they want to hear every little rattle in their car, but for others we like to keep some refinement, especially for daily drivers. The old oem mounts can sag up to an inch or more and that creates some play and delay for driver inputs. So that would be an avenue I would recommend as well. +1
#30
Rennlist Member
My 997.2 used to grind from 1st to 2nd. I finally figured out that pausing briefly in neutral eliminated the problem. Must let the synchros catch up or something.