Welcome to 911UK
The only place for Porsche, 911uk is the definitive enthusiast and resource site for the Porsche 911.
Registration is fast, simple and absolutely free, so join up today for full access to the site and benefit from latest member offers.

Porsche Classifieds
Sell Your Porsche on 911uk
Create a Free Classified Advert
Search Ads
Classified Adverts FAQ
Trade Classified Information
Buyer & Seller Fraud Protection
Consumer Rights Act
Pre Purchase Inspection (PPI)
Porsche Car Sourcing
Porsche Cars Wanted
Official Porsche Centre Reviews
Model
Stock
Porsche 911
992 : 2019- 1
991 : 2011-2019 0
997 : 2004-2012 1
996 : 1997-2005 31
993 : 1993-1998 5
964 : 1989-1993 2
Carrera 3.2 : 1983-1989 3
Carrera SC : 1977-1983 1
930 Turbo : 1975-1989 0
Early 911 : 1964-1977 0
Porsche Other Models
Classic : 1950-1965 0
Boxster : 1997- 22
Cayman : 2005- 14
Cayenne : 2003- 2
Macan : 2014- 2
Panamera : 2009- 1
912-914-924-928-944-968 1
959 - CarreraGT - RaceCar 0
Car Parts For Sale & Wanted
Other Items For Sale & Wanted
Wheels Tyres For Sale & Wanted
Number Plates For Sale Wanted

Porsche Services
Porsche Body Shop Repair
Paint Protection & Wrapping
Porsche Classic Insurance
Porsche Classic Parts
Porsche Classic Restoration
Porsche Design Collection
Porsche Engine Gearbox Rebuild
Porsche Heritage & History
Porsche News
Porsche Picture Gallery
Win a New Porsche 911

Porsche Parts
Body Parts, Body Styling
Brakes, Clearance
Electrical, Exhausts
Engine Cooling, Engine Electrical
Engine Rebuild, Heating Cooling
Interior Incar, Lighting
Rubber Seals, Service Parts
Steering, Suspension
Transmission, Workshop Tools
Early 911, 911 - 930, 928 - 968
964 - 993, 996 - 997, Boxster
Cayman, Cayenne, Panamera

Porsche Model Range
911 [992] 2018-Current
Porsche 911 [992]
911 [991] 2011-2019
Porsche 911 [991]
911 [997] 2004-2012
Porsche 911 [997]
911 [GT] GT1-GT2-GT3
Porsche 911 [GT]
911 [996] 1997-2005
Porsche 911 [996]
911 [993] 1993-1998
Porsche 911 [993]
911 [RS] RS-RSR
Porsche 911 [RS]
911 [964] 1989-1993
Porsche 911 [964]
911 3.2 1983-1989
Porsche 911 3.2 Carrera
911 SC 1977-1983
Porsche 911 SC
911 [Early] 1964-1977
Porsche 911 [Early]
Boxster & Cayman
Porsche Boxster & Cayman
Cayenne & Panamera
Porsche Cayenne & Panamera

911uk Site Partners

Post new topic   Reply to topic
Author Message
P911X50
Monza


Joined: 03 Jan 2017
Posts: 244
Location: Hertfordshire


PostPosted: Tue Aug 13, 2019 6:39 pm    Post subject: 2nd gear pop out - 996tt X50 Reply with quote

Hi

I have a problem with the gearbox. When decelerating towards a roundabout in 2nd gear my car pops out of 2nd gear.

It doesn't happen on most occassions, only sometimes when driving down hill towards a roundabout.

Clearly, there is a fault. Any ideas on costs to repair, it's a 996 X50 (apparently, they have stronger gearboxs)

All advice greatly appreciated.

thumbsup
_________________
Porsche 996 Turbo X50 with 9e exhaust,
BMW M6 V10,
Previous
Evo 4 with Evo 8 MR Engine 360 bhp - Road Legal Track car
Previous
MR2 Turbo 280 bhp - Road Legal Track Car
 
  
View user's profile Send private message
   
MisterCorn
Dijon


Joined: 08 Jan 2011
Posts: 7161
Location: Nottingham, England

2004 Porsche 996 Turbo

PostPosted: Tue Aug 13, 2019 6:43 pm    Post subject: Reply with quote

They are completely different to the standard G96 gearbox. I have a spare gearbox from a 36k car in great condition if needed, but it will be cheaper to get yours fixed. I would call Matt at Fearnsport.

MC
 
  
View user's profile Send private message Visit poster's website
   
P911X50
Monza


Joined: 03 Jan 2017
Posts: 244
Location: Hertfordshire


PostPosted: Tue Aug 13, 2019 7:27 pm    Post subject: Reply with quote

Hi

Someone was telling me that it was the synchro hub? is that a big job? any ideas on cost?

Thanks
_________________
Porsche 996 Turbo X50 with 9e exhaust,
BMW M6 V10,
Previous
Evo 4 with Evo 8 MR Engine 360 bhp - Road Legal Track car
Previous
MR2 Turbo 280 bhp - Road Legal Track Car
 
  
View user's profile Send private message
   
MisterCorn
Dijon


Joined: 08 Jan 2011
Posts: 7161
Location: Nottingham, England

2004 Porsche 996 Turbo

PostPosted: Tue Aug 13, 2019 7:34 pm    Post subject: Reply with quote

Another option.

https://sportsandclassic.com/gearbox-repairs-2/

My gearbox would be £5k

MC
 
  
View user's profile Send private message Visit poster's website
   
Mac996t
Nürburgring


Joined: 26 Mar 2011
Posts: 494


2004 Porsche 996 Turbo

PostPosted: Tue Aug 13, 2019 11:24 pm    Post subject: Reply with quote

Google 996t 2nd gear pop out, loads of stuff comes up, mainly on the American forums, strangely it seems to be quite rare in the UK but very common in the US

Quick search turned up this too

http://www.gboxweb.com/996shimtip.html
 
  
View user's profile Send private message
   
alpinaman
Montreal


Joined: 21 Feb 2012
Posts: 560



PostPosted: Wed Aug 14, 2019 3:59 pm    Post subject: Reply with quote

Its a common fault,my C4s did it too.

I think i was quoted just over £2000 for repair,albeit a few years ago now.
 
  
View user's profile Send private message
   
sportsandclassic
Approved Trader


Joined: 21 Apr 2008
Posts: 262
Location: Nether Alderley Cheshire


PostPosted: Thu Aug 15, 2019 8:13 am    Post subject: Reply with quote

The 2nd Gear "pop-out" has been around on these cars since almost new, this includes the 996 C2/C4/C4S/GT3/GT2/Turbo models. We have been repairing these for 14 years now.

The "pop-out" will 99% of the time occur like you have described as the gear is coasting and not under engine load. When under load the inertia and angles of engagement teeth on the gear and shift sleeve actually force them together to interlock but when you take your foot off the throttle the gear train is oscillating with flywheel dampening, road speed, through the differential and there are a number of things to keep that gear engaged - spring pressure of the selector rod, engagement depth of shift sleeve, gear stack height etc.

One of the main issues is that the 2nd gear height is too low from manufacture - this can be corrected and is 1 of the modifications we do when re-build these gearboxes.
The gear can also have too much running clearance on the needle roller support bearing so again this needs to be corrected to minimise gear flutter on coast/over-run.

Chances are it will require a few modifications BUT it could end up with new gear/shift sleeve and synchro set for 2nd gear as it could be damaged now.

These Gbox detents are merely a short term fix - they allow the shift arrestor to travel further to slam the shift sleeve into the engagement ring on the gear , this creates a few issues in that the shift rod is now not held correctly as it has been forced past where it should be and you are now over throwing every other gear in the gearbox. On 3rd/4th gears the engagement rings have end stops and when these Gbox detents are installed the shift sleeve on 3rd/4th damages and breaks these off the gear allowing now a foreign object to cause damage- yes sure the magnet may get hold of it but there is not just one that breaks off and I have seen the damage these "wonderful upgraded" detents cause.

Rough cost for 2nd gear fix is £2750.00 plus VAT and this includes us removing and installing the gearbox. (This includes new parts for 2nd Gear)
_________________
Sports and Classic Ltd

Sports and Classic - Porsche Service & Maintenance
 
  
View user's profile Send private message Send e-mail Visit poster's website
   
Display posts from previous:   
Post new topic   Reply to topic   All times are GMT - 12 Hours
Page 1 of 1

 
Jump to:  

You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot vote in polls in this forum
You can attach files in this forum
You can download files in this forum
You cannot post calendar events in this forum