Pelican Parts
Parts Catalog Accessories Catalog How To Articles Tech Forums
Call Pelican Parts at 888-280-7799
Shopping Cart Cart | Project List | Order Status | Help



Go Back   Pelican Parts Forums > Porsche Classified Ads > Porsche 924/944/968 Used Parts For Sale & Wanted


Reply
 
LinkBack Thread Tools Rate Thread
Author
Thread Post New Thread    Reply
gearhead
 
Join Date: Nov 2007
Location: Loverland, CO
Posts: 16,702
G31 Snail gearbox dog teeth

Albins replacement dogs for the G31 turbo gearbox. 1st, 2nd, and 3rd. Don't pay the silly prices you see elsewhere because they are claimed to be rare or hard to find. $150 each or buy 2 get 1 free.

__________________
1974 911 Restorod
1974 914 Bumble Bee
1975 911S Tom's Targa
2008 Cayman S Mule
Old 06-30-2017, 09:35 AM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #1 (permalink)
Registered User
 
ideola's Avatar
 
Join Date: Nov 2005
Location: Woodstock IL
Posts: 1,684
Garage
Could you post a close up of the first gear dog?

This is what a G31 dog looks like:


It's hard to tell from the photo, but the stack of rings with the asymmetric teeth appears to be the opposite ramp, which is correct for a 915 but not a G31.
__________________
15 981 GTS | 88 924S SE | 82 931 Holbert | 82 931 Rallye | 81 937 | 81 Euro 931 | 81 Weissach | 80 US 928 | 80 US 931 '941' | 80 US 931 | 80 931 GTR | 79 Sebring | 78 D-Prod Replica | 78 w/D-Prod kit | 78 Poli-Form | 78 Limited Edition | 77 Martini
Old 06-30-2017, 09:41 AM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #2 (permalink)
gearhead
 
Join Date: Nov 2007
Location: Loverland, CO
Posts: 16,702
Sorry Dan, but you've got it backwards. That's a 915 dog you have pictured there.


Regards,

Matt Monson
Guard Transmission LLC.
__________________
1974 911 Restorod
1974 914 Bumble Bee
1975 911S Tom's Targa
2008 Cayman S Mule
Old 07-05-2017, 07:35 AM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #3 (permalink)
Registered User
 
ideola's Avatar
 
Join Date: Nov 2005
Location: Woodstock IL
Posts: 1,684
Garage
I have four rebuilt G31s, a trans rebuilder, and over 30 customers who beg to differ.

Albins and CMS both have incorrectly labeled the G31 first dog ring.
__________________
15 981 GTS | 88 924S SE | 82 931 Holbert | 82 931 Rallye | 81 937 | 81 Euro 931 | 81 Weissach | 80 US 928 | 80 US 931 '941' | 80 US 931 | 80 931 GTR | 79 Sebring | 78 D-Prod Replica | 78 w/D-Prod kit | 78 Poli-Form | 78 Limited Edition | 77 Martini
Old 07-05-2017, 08:18 AM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #4 (permalink)
gearhead
 
Join Date: Nov 2007
Location: Loverland, CO
Posts: 16,702
Quote:
Originally Posted by ideola View Post
I have four rebuilt G31s, a trans rebuilder, and over 30 customers who beg to differ.

Albins and CMS both have incorrectly labeled the G31 first dog ring.
If that's the case, you are contradicting yourself and they are in fact the same as 915...
__________________
1974 911 Restorod
1974 914 Bumble Bee
1975 911S Tom's Targa
2008 Cayman S Mule
Old 07-05-2017, 08:49 AM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #5 (permalink)
Registered User
 
ideola's Avatar
 
Join Date: Nov 2005
Location: Woodstock IL
Posts: 1,684
Garage
Also, this thread from 924board, which shows a proper G31 first gear assembly.

924Board.org :: View topic - Which RedLine oil in a G31 gearbox?

Quote:
Originally Posted by john h
Quote:
Originally Posted by patand
The gearbox is now sitting in my garage! I have opened the first part of it up to see if there where any better dogteeths for first gear in this gearbox than my old one and as it looks much better, not like new or perfekt but much better!

Old gearbox first gear dogteeth:



New gearbox first gear dogteeth:



Anyone now if this is slightly worn or if it will break totaly very quickly?

Anyhow I still would like input on wich oil to use to protect this baby!
yep that's quite worn - I came across some photo's (pre-digital camera era so will have to scan them first) the other day of my new 1st gear dog teeth - I'll see if I can find them again and post them so you can see what new dog looks like compared to the worn ones.

Here's the photo sorry about quality but theywere takenwhen I replaced the dog teeth in 1989
I've had this argument multiple times with Roger at CMS because he is relying upon wrong information from Albins. I learned this the hard (expensive) way because I had him drop ship a dog ring overseas, and it was the wrong one. I finally stopped arguing with him, and just tell him which ramp that I want, rather than ordering what he thinks is the G31 part.

The G31's asymmetric 1st gear teeth are high on the left side ramping down to low on the right side, as depicted in the above photo and the one that I post on my web site.

The G31 shares the 915 first synchro, and the 928 2nd-3rd synchro. More detailed information is available in an excellent article written by Pete Tinucci, which he has graciously allowed me to host for download on my site.
__________________
15 981 GTS | 88 924S SE | 82 931 Holbert | 82 931 Rallye | 81 937 | 81 Euro 931 | 81 Weissach | 80 US 928 | 80 US 931 '941' | 80 US 931 | 80 931 GTR | 79 Sebring | 78 D-Prod Replica | 78 w/D-Prod kit | 78 Poli-Form | 78 Limited Edition | 77 Martini

Last edited by ideola; 07-05-2017 at 09:03 AM..
Old 07-05-2017, 08:54 AM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #6 (permalink)
 
Registered User
 
ideola's Avatar
 
Join Date: Nov 2005
Location: Woodstock IL
Posts: 1,684
Garage
Quote:
Originally Posted by Matt Monson View Post
If that's the case, you are contradicting yourself and they are in fact the same as 915...
Nope. As I said, Albins has mislabeled the G31 dog ring as a 915 part. Their label is wrong. Since they make the parts for Roger at CMS, Roger also labels them as wrong. In any event, I don't claim to be an expert on the 915 gearbox, but I do know for a fact which dog ring goes in the G31, and it is not the one you are advertising here.
__________________
15 981 GTS | 88 924S SE | 82 931 Holbert | 82 931 Rallye | 81 937 | 81 Euro 931 | 81 Weissach | 80 US 928 | 80 US 931 '941' | 80 US 931 | 80 931 GTR | 79 Sebring | 78 D-Prod Replica | 78 w/D-Prod kit | 78 Poli-Form | 78 Limited Edition | 77 Martini
Old 07-05-2017, 08:56 AM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #7 (permalink)
gearhead
 
Join Date: Nov 2007
Location: Loverland, CO
Posts: 16,702
I'm not arguing with you Dan. I was merely asking you to clarify contradictory statements. If I am to understand your further explanation they are in fact the same as 915.

I bought these a decade ago when I bought out PHII. CMS is about the only one who has bought them since then. If they are wrong, they are wrong, and go in the bin.
__________________
1974 911 Restorod
1974 914 Bumble Bee
1975 911S Tom's Targa
2008 Cayman S Mule
Old 07-05-2017, 09:54 AM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #8 (permalink)
Registered User
 
ideola's Avatar
 
Join Date: Nov 2005
Location: Woodstock IL
Posts: 1,684
Garage
The 915 part you show appears to have the same ramp as the G31, but that doesn't mean that it is the same (of course) as the G31. I believe there is a difference, otherwise, we wouldn't be buying $250+ G31 dogs when the G15 dog is only ~$125 from multiple sources. We'd have to do a side by side comparison. For one, I think the inner race is taller on the G31 unit than on the standard 915 part you referenced.
__________________
15 981 GTS | 88 924S SE | 82 931 Holbert | 82 931 Rallye | 81 937 | 81 Euro 931 | 81 Weissach | 80 US 928 | 80 US 931 '941' | 80 US 931 | 80 931 GTR | 79 Sebring | 78 D-Prod Replica | 78 w/D-Prod kit | 78 Poli-Form | 78 Limited Edition | 77 Martini
Old 07-05-2017, 11:42 AM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #9 (permalink)
Registered User
 
ideola's Avatar
 
Join Date: Nov 2005
Location: Woodstock IL
Posts: 1,684
Garage
From the above-linked Tinucci article:
Quote:
These transaxles share many parts from the 915 transaxle. Directly swappable components are 3-5th gear sets, some bearings, synchronizer rings, differential. Other parts can be swapped with minor changes. The 915 ring & pinions cannot be used because it is cut for the opposite rotation, so you would have 5 speeds in reverse and one speed forward. The ring gear cannot be flipped because the case shape does not have enough material for clearance. You would grind through the case before the gear would fit.

Dog teeth from the 930 first gear have been modified to fit first and second gear. I havenít seen or obtained one yet but I suspect that since the 930 uses an internal snap ring and is taller, an external snap ring grove must be machined and the overall height need to be reduced slightly. California Motorsports has direct replacement dog teeth for the G31 series now. The late 915 first gear synchro ring can be used for first gear and 928 synchro rings can be used for second and third.
If the 915 dog ring were the same, I'd be very surprised that Pete didn't discover it.
__________________
15 981 GTS | 88 924S SE | 82 931 Holbert | 82 931 Rallye | 81 937 | 81 Euro 931 | 81 Weissach | 80 US 928 | 80 US 931 '941' | 80 US 931 | 80 931 GTR | 79 Sebring | 78 D-Prod Replica | 78 w/D-Prod kit | 78 Poli-Form | 78 Limited Edition | 77 Martini
Old 07-05-2017, 11:48 AM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #10 (permalink)
gearhead
 
Join Date: Nov 2007
Location: Loverland, CO
Posts: 16,702
I dunno. I'll leave that for you 924 guys to figure out. I don't sell my 915 teeth, I only use them in manufacturing. When they come from Germany they aren't completely finished and require further machine work once on the gear.

It's possible 930 teeth are an option. The inner splines on 915 and 930 teeth are different even though they use the same shift sleeve. 930 teeth are closer to $400, making G31 teeth a relative bargain. All the motorsports G31 gears I have were made using 930 bullnose dogs, except for 1st.

Any interested buyers, please take note that the 1st gear dogs are no longer on offer.
__________________
1974 911 Restorod
1974 914 Bumble Bee
1975 911S Tom's Targa
2008 Cayman S Mule
Old 07-05-2017, 12:36 PM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #11 (permalink)
Reply

Thread Tools
Rate This Thread
Rate This Thread:

 


All times are GMT -8. The time now is 12:20 AM.


 
Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2019, vBulletin Solutions, Inc.
Search Engine Optimization by vBSEO 3.6.0
Copyright 2018 Pelican Parts, LLC - Posts may be archived for display on the Pelican Parts Website -    DMCA Registered Agent Contact Page
 

DTO Garage Plus vBulletin Plugins by Drive Thru Online, Inc.