Interesting 2nd gear pop out avoidance mod-
Registered User
Joined: Aug 2009
Posts: 289
From: Houston
Rep Power: 34
Hey Erik,
Akram just got my transmission back from you, this past week. It's still in the box, because Tial is still making my turbos.
Which of the above upgrades did you do to my tranny? Shim, Detent, or both?
Thanks for the heads-up.
Sincerely,
Akram just got my transmission back from you, this past week. It's still in the box, because Tial is still making my turbos.
Which of the above upgrades did you do to my tranny? Shim, Detent, or both?
Thanks for the heads-up.
Sincerely,
Registered User
Joined: Jun 2009
Posts: 159
From: Valhalla
Rep Power: 27
Eric please have look at your pms i need the part and have pmed you :-).
Paulunm, not a problem. Both factors should be taken into account here, naturally the shims are important during a rebuild, as they are often not placed back into the same position that they were in during disassembly. The idea here is pretty simple the shims control the stack height and thus the engagement of the 2nd gear. This is due to the fact that the 1st and 2nd shift fork is not adjustable, as it has been in other gearboxes. Since this is a solid point the only way to adjust the engagement it through the shims, or through the locking device, which also controls the amount of movement allowed by the shift rod, and thus the fork.
The part that we are offering basically allows the shift rod to move slightly farther when you move your gear shift forward and back, thus giving you a better engagement of the operating sleeve to the dog ring itself.
I hope that made sense as the how each part plays a roll in this. Please let me know if I was not clear enough.
Warmest Regards,
Erik Johnson
GBox Performance Transaxles
(303) 440-8899 work
(303) 895-4828 cell
The part that we are offering basically allows the shift rod to move slightly farther when you move your gear shift forward and back, thus giving you a better engagement of the operating sleeve to the dog ring itself.
I hope that made sense as the how each part plays a roll in this. Please let me know if I was not clear enough.
Warmest Regards,
Erik Johnson
GBox Performance Transaxles
(303) 440-8899 work
(303) 895-4828 cell
Former Vendor
Joined: Jan 2010
Posts: 67
From: Colorado
Rep Power: 0
Hey there Frank,
Both of these modification were made as well as modification to the operating sleeve itself. You will not have any issues with your gearbox, this is one of the best benefits to sending your gearbox into us, we are able to put all of our knowledge to use as well as every modification that we have found to be useful into effect, all at the same time.
The modification that we are offering here is a DIY mod, that will help rectify the problems associated with many of the gearboxes out there, before they start cropping up.
I am sure that you are going to be quite impressed with the performance of your new gearbox, and I look forward to hearing your impressions of it once your car has been returned.
It was a pleasure working with both you and Akram, and I look forward to helping you both again in the future. As always, I am here to help so feel free to contact me with any questions or needs.
Erik Johnson
GBox Performance Transaxles
(303) 440-8899 work
(303) 895-4828 cell
Both of these modification were made as well as modification to the operating sleeve itself. You will not have any issues with your gearbox, this is one of the best benefits to sending your gearbox into us, we are able to put all of our knowledge to use as well as every modification that we have found to be useful into effect, all at the same time.
The modification that we are offering here is a DIY mod, that will help rectify the problems associated with many of the gearboxes out there, before they start cropping up.
I am sure that you are going to be quite impressed with the performance of your new gearbox, and I look forward to hearing your impressions of it once your car has been returned.
It was a pleasure working with both you and Akram, and I look forward to helping you both again in the future. As always, I am here to help so feel free to contact me with any questions or needs.
Erik Johnson
GBox Performance Transaxles
(303) 440-8899 work
(303) 895-4828 cell
Erik:
Has anyone heard of this second gear popout problem on a late model 2005 Turbo "S"? I have yet to read about one, or is this an issue that occurred with earlier Cars?
Do I need to put this part in my gearbox, I guess is the REAL question? It performs flawlessly at the moment.
SWR
Has anyone heard of this second gear popout problem on a late model 2005 Turbo "S"? I have yet to read about one, or is this an issue that occurred with earlier Cars?
Do I need to put this part in my gearbox, I guess is the REAL question? It performs flawlessly at the moment.
SWR
Former Vendor
Joined: Jan 2010
Posts: 67
From: Colorado
Rep Power: 0
SWR - Well I can certainly understand the hesitation to change anything that is working flawlessly, however, I do have to report that the Turbo S gearbox does also suffer from this issue.
I guess the easy answer is Yes, while you may not be experiencing this issue yet, there is a good change that down the road you will. If you do eventually have a problem, the cost of the rebuild to fix it will make you wish you had spent the money. On average a Turbo gearbox rebuild will run about $3500.00 plus shipping and R&R. So my advice, and take it for what is I guess here is, spend the $70.00 as a preventive measure, and continue to enjoy your car.
We are really only trying to help people protect their gearbox from damage here, obviously we are not going to get rich here anytime soon selling a $70.00 part and basically lowering the amount of gearbox rebuilds that we do in the process. We simply felt that it was about time to share this with everyone now. (We have been installing this fix into our rebuilds since about 2002)
I hope that this helps to answer your question, thanks for the post.
Erik Johnson
GBox Performance Transaxles
(303) 440-8899 work
(303) 895-4828 cell
www.gboxweb.com
I guess the easy answer is Yes, while you may not be experiencing this issue yet, there is a good change that down the road you will. If you do eventually have a problem, the cost of the rebuild to fix it will make you wish you had spent the money. On average a Turbo gearbox rebuild will run about $3500.00 plus shipping and R&R. So my advice, and take it for what is I guess here is, spend the $70.00 as a preventive measure, and continue to enjoy your car.
We are really only trying to help people protect their gearbox from damage here, obviously we are not going to get rich here anytime soon selling a $70.00 part and basically lowering the amount of gearbox rebuilds that we do in the process. We simply felt that it was about time to share this with everyone now. (We have been installing this fix into our rebuilds since about 2002)
I hope that this helps to answer your question, thanks for the post.
Erik Johnson
GBox Performance Transaxles
(303) 440-8899 work
(303) 895-4828 cell
www.gboxweb.com
PaulunM, I can't speak to the "detent" mod, as I didn't talk specifically about this with my indy. He may well have done this, but we were focused on the other areas of the transmission internals and discussing the functions of the gear box...
Mike
Mike
Thread Starter
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Registered User
Joined: Mar 2007
Posts: 560
From: Los Angeles, Ca
Rep Power: 47
It's in the original post, click the link in the first post (includes pics)- but here it is-
Step #1 remove the bolt that prevents the detent cover from coming completely out. This will be a 13mm bolt in 996 street cars, and an allen key in the GT2/GT3 gearboxes. This is a 6mm allen key.
Step #2 remove the detent cover which is an 8mm allen key.
Step #3 use a strong magnet to remove the spring and detent from the detent holder. (hint if you move the shifter around a bit it will help this release easier)
Step #4 change out the detent with the new part that I have sent you. You can use the same spring that came out of the gearbox.
Step #5 here is the tricky part. Looking from the side of the gearbox you put the new detent in so that the pinned part that holds the internal wheel, is 90 degrees from the side of the gearbox. ie It points to the side of the car. This is important because the wheel on the detent engages a plate internally, this is not too tough though and can be felt as the new detent is installed and pushed into place.
Step #6 drop in spring, this step can be combined for easier installation with step #5
Step #7 reinstall the detent cover and transmission bolt. End of job.
How does this work? Well, me have made a modification to the OEM part that gives this new detent the ability to allow for more engagement all of the gears. This detent controls the forward and aft motions of the gearing changes.
Registered User
Joined: Jan 2007
Posts: 2,981
From: N. California
Rep Power: 298
As I recall there are TWO reasons for 'second gear pop out':
One is the incorrect stack height leading to the 2nd gear to the 1/2 operating sleeve being incorrect...essentially a mfg defect
The other is missed shifts leading to 2nd gear dog ring wear and then loss of engagement retention.
Two questions:
Is this true?
Does this fix address both failure modes?
Thx
A
One is the incorrect stack height leading to the 2nd gear to the 1/2 operating sleeve being incorrect...essentially a mfg defect
The other is missed shifts leading to 2nd gear dog ring wear and then loss of engagement retention.
Two questions:
Is this true?
Does this fix address both failure modes?
Thx
A
Last edited by ard; Feb 19, 2010 at 11:26 PM.