996 Turbo / GT2 Turbo discussion on previous model 2000-2005 Porsche 911 Twin Turbo and 911 GT2.

Perfect 1st to 2nd shift?

Old Nov 12, 2012 | 11:23 AM
  #16  
johnspeed's Avatar
Registered User
Joined: Jun 2006
Posts: 3,636
From: chicago
Rep Power: 256
johnspeed Is a GOD !johnspeed Is a GOD !johnspeed Is a GOD !johnspeed Is a GOD !johnspeed Is a GOD !johnspeed Is a GOD !johnspeed Is a GOD !johnspeed Is a GOD !johnspeed Is a GOD !johnspeed Is a GOD !johnspeed Is a GOD !
Originally Posted by TurboTodd
I really do not understand why porsche used such a low first gear. If someone knows please inform me.

As Tim said the 996tt goes from 3.82 1st to 2.05 2nd. Thats a big change.
The 997tt is 3.82 to 2.14, the gt2 goes from 3.15 to 1.89.

Has anyone ever tried to use a gt2 3.15 first gear?
That is a big gear recovery range we have between 1 to 2...
I wish it was a closer ratio to keep the RPMS up from the 1st to 2nd shift,, Plus a taller 1st would be nice for most of us higher then stock HP/TQ guys.
Thats why I am glad to have a higher RPM rev limit, to help with that drop on that gear change,keeping RPMS up..Also my 1'' bigger diameter tires help a little to give a taller gear effect.
But all in all, I have no problem shifing 1st to 2nd with my 997 short shifter?
 
Old Nov 12, 2012 | 07:36 PM
  #17  
NeunElfDrehzahl's Avatar
Registered User
Joined: Jul 2012
Posts: 63
From: Milwaukee, WI
Rep Power: 21
NeunElfDrehzahl is a glorious beacon of lightNeunElfDrehzahl is a glorious beacon of lightNeunElfDrehzahl is a glorious beacon of lightNeunElfDrehzahl is a glorious beacon of lightNeunElfDrehzahl is a glorious beacon of lightNeunElfDrehzahl is a glorious beacon of light
My smoothest starts and shift 1-2, not looking for speed, are to get revs 1200-1500 then let out clutch to start rolling from a stop. Up to about 2800-3000K from first to 2nd, and pause short(long) enough for revs to fall no lower than 1800K, add throttle if needed to keep revs up to prevent it from lugging, as I let out clutch into 2nd. For speed keep revs 2000K or above for 1-2 but no more than 3K. YMMV- I have a flashed X50 TT.
 
Old Nov 12, 2012 | 07:58 PM
  #18  
TabooPc's Avatar
Registered User
10 Year Member
Joined: Jul 2012
Posts: 569
From: Seattle, WA
Rep Power: 82
TabooPc Is a GOD !TabooPc Is a GOD !TabooPc Is a GOD !TabooPc Is a GOD !TabooPc Is a GOD !TabooPc Is a GOD !TabooPc Is a GOD !TabooPc Is a GOD !TabooPc Is a GOD !TabooPc Is a GOD !TabooPc Is a GOD !
Originally Posted by TurboTodd
I really do not understand why porsche used such a low first gear. If someone knows please inform me.

As Tim said the 996tt goes from 3.82 1st to 2.05 2nd. Thats a big change.
The 997tt is 3.82 to 2.14, the gt2 goes from 3.15 to 1.89.

Has anyone ever tried to use a gt2 3.15 first gear?
If the GT2's is any better than the TT, then the TT must be terrible... I noticed my first to second is a little harsh aswell (I have the gt2).

I remember my 997 c4s was really smooth first to second... :\
 
Old Nov 12, 2012 | 08:09 PM
  #19  
JayAndreTT's Avatar
Thread Starter
|
Registered User
Joined: Apr 2012
Posts: 328
Rep Power: 32
JayAndreTT is just really niceJayAndreTT is just really niceJayAndreTT is just really niceJayAndreTT is just really niceJayAndreTT is just really nice
Originally Posted by TabooPc

I remember my 997 c4s was really smooth first to second... :\
Tell me about it, such a difference from the 996!
 
Old Nov 12, 2012 | 08:58 PM
  #20  
TabooPc's Avatar
Registered User
10 Year Member
Joined: Jul 2012
Posts: 569
From: Seattle, WA
Rep Power: 82
TabooPc Is a GOD !TabooPc Is a GOD !TabooPc Is a GOD !TabooPc Is a GOD !TabooPc Is a GOD !TabooPc Is a GOD !TabooPc Is a GOD !TabooPc Is a GOD !TabooPc Is a GOD !TabooPc Is a GOD !TabooPc Is a GOD !
Originally Posted by JayAndreTT
Tell me about it, such a difference from the 996!
Just took a loop through the city to do some first to second shifts. My gt2 actually does shift pretty smooth from first to second at normal driving.

Though when accelerating hard, the first can be kind of clunky to come out of, as you have to wait a second for the rpm to die down before engaging second.

Letting the clutch out quickly does slow the engine, but it puts it under some stress. (which is probably fine)
 
Old Nov 17, 2012 | 03:04 PM
  #21  
Nadurra2008's Avatar
Registered User
Joined: May 2011
Posts: 56
From: East Coast
Rep Power: 17
Nadurra2008 is infamous around these parts
Same here...1st to 2nd at cruising speed is not very smooth for me either on my '03. I may indeed be looking at a shifter upgrade.
 
Old Nov 20, 2012 | 05:13 PM
  #22  
Dock (Atlanta)'s Avatar
Registered User
Joined: Jul 2003
Posts: 1,803
From: Atlanta, GA
Rep Power: 99
Dock (Atlanta) is just really niceDock (Atlanta) is just really niceDock (Atlanta) is just really niceDock (Atlanta) is just really niceDock (Atlanta) is just really nice
Getting out of 1st early is not the key to a smooth 1-2 shift. As a matter of fact, the shift initiation RPM doesn't matter at all.

I ever so slightly "lead with the clutch" when I shift, and I don't fully release the throttle once the clutch pedal is depressed; always smooth shifts.
 
Old Nov 20, 2012 | 05:19 PM
  #23  
Dock (Atlanta)'s Avatar
Registered User
Joined: Jul 2003
Posts: 1,803
From: Atlanta, GA
Rep Power: 99
Dock (Atlanta) is just really niceDock (Atlanta) is just really niceDock (Atlanta) is just really niceDock (Atlanta) is just really niceDock (Atlanta) is just really nice
Originally Posted by TurboTodd
I really do not understand why porsche used such a low first gear. If someone knows please inform me.
It's "all motor" when starting off in 1st gear (no boost), so given the relatively heavy weight of the Turbo the overall ratio in 1st gear is an advantage in getting the car up and moving faster than some SUV.

I personally love the gearing in 1st. It produces the hardest pull possible in my Turbo (read - highest longitudinal g).
 
Old Nov 20, 2012 | 10:05 PM
  #24  
FI_FTW's Avatar
Registered User
Joined: Jan 2010
Posts: 1,413
From: OC, CA
Rep Power: 93
FI_FTW has a reputation beyond reputeFI_FTW has a reputation beyond reputeFI_FTW has a reputation beyond reputeFI_FTW has a reputation beyond reputeFI_FTW has a reputation beyond reputeFI_FTW has a reputation beyond reputeFI_FTW has a reputation beyond reputeFI_FTW has a reputation beyond reputeFI_FTW has a reputation beyond reputeFI_FTW has a reputation beyond reputeFI_FTW has a reputation beyond repute
1st to 2nd gear shifts are always the hardest in any manual really. The vague clutch feel just adds to it IMO.
 
Old Nov 21, 2012 | 10:49 AM
  #25  
hroussard's Avatar
Registered User
Joined: Nov 2004
Posts: 2,154
Rep Power: 198
hroussard Is a GOD !hroussard Is a GOD !hroussard Is a GOD !hroussard Is a GOD !hroussard Is a GOD !hroussard Is a GOD !hroussard Is a GOD !hroussard Is a GOD !hroussard Is a GOD !hroussard Is a GOD !hroussard Is a GOD !
Here is my 2 cents. It has nothing to do with the shifter but it has everything to do with the assisted clutch system that Porsche felt was needed for people/drivers with less power in their legs (100 lbs drivers come to mind here.. fill in the blanks). So this assisted clutch reduces the pressure needed to operate the clutch pedal dramatically. Now, this "assist" is not completely linear and in the first 20% of the pedal travel it just has a complete different amount of assist when compared with the other 80% or so. As a result, there is this special "position" in the pedal where the assist level changes... and that is what drivers hit every time they have a "2nd shift moment" and THAT is why people have problems with the 996TT clutch and the jerky starts. It is also why people are trying to shift at speeds / revs that prevent the engine from racing or bogging down and in doing so circumvent the problem. I also believe that this issue is the reason for the 2nd gear pop-out problem that is a result of too many bad 2nd gear shifts because of that problem. This is what I am thinking and I am sticking to it
 
Old Nov 21, 2012 | 01:41 PM
  #26  
FI_FTW's Avatar
Registered User
Joined: Jan 2010
Posts: 1,413
From: OC, CA
Rep Power: 93
FI_FTW has a reputation beyond reputeFI_FTW has a reputation beyond reputeFI_FTW has a reputation beyond reputeFI_FTW has a reputation beyond reputeFI_FTW has a reputation beyond reputeFI_FTW has a reputation beyond reputeFI_FTW has a reputation beyond reputeFI_FTW has a reputation beyond reputeFI_FTW has a reputation beyond reputeFI_FTW has a reputation beyond reputeFI_FTW has a reputation beyond repute
Hroussard, you're right on the money! I consider myself a very good manual driver and this is the first car where I was wondering what the hell was wrong with the clutch?! I can drive it smoothly but it should be much easier. I will try removing that spring, which is supposed to improve the clutch feel.
 
Old Nov 21, 2012 | 01:57 PM
  #27  
hroussard's Avatar
Registered User
Joined: Nov 2004
Posts: 2,154
Rep Power: 198
hroussard Is a GOD !hroussard Is a GOD !hroussard Is a GOD !hroussard Is a GOD !hroussard Is a GOD !hroussard Is a GOD !hroussard Is a GOD !hroussard Is a GOD !hroussard Is a GOD !hroussard Is a GOD !hroussard Is a GOD !
Thumbs up

Originally Posted by FI_FTW
Hroussard, you're right on the money! I consider myself a very good manual driver and this is the first car where I was wondering what the hell was wrong with the clutch?! I can drive it smoothly but it should be much easier. I will try removing that spring, which is supposed to improve the clutch feel.
Well, there are some treads in forums about that. You should check before you do that. It seems the real solution is to REPLACE that spring in the system with a spring that is less abrupt (strong).
 
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
away
Automobiles For Sale
2
Sep 4, 2015 12:30 PM
takenotes996tt
New Member Introductions
2
Sep 3, 2015 10:12 AM
ECS Tuning - VW
VW Vendor Classifieds
0
Aug 26, 2015 12:13 PM
PenguiN
Automotive Parts & Accessories For Sale/Wanted
7
Aug 21, 2015 10:11 AM


Thread Tools
Rate This Thread
Rate This Thread:
You have already rated this thread Rating: Thread Rating: 0 votes,  average.


All times are GMT -6. The time now is 02:17 AM.