924Board.org

ideola · Joined: 01 Oct 2004 Posts: 15550 Location: Spring Lake MI

New for 2010, the G31 and G16 1st gear dogteeth and the 2nd/3rd gear dogteeth are now available through Ideola's Garage. The list pricing with California Motorsports is $250 per dogteeth, but you may order them through us for $225 apiece. Note that the 1st gear is different between the G31 and the G16, but the 2nd and 3rd gear dogteeth are the same across both boxes.

G31 First Gear Dogteeth

G16 First Gear Dogteeth

G31/G16 2nd & 3rd Gear Dogteeth

In addition, we have now tracked down sources for complete repair kits for both the G31 and the G16 snailshell transmissions. Note that the seal kits are both NLA from Porsche, so what we've done is identified a parts list and put together a special package price that we believe is cheaper than what you'll be able to buy the individual components for. The kits consist of the following:

first gear synchro ring
second gear synchro ring
front housing to mid housing gasket
input shaft radial seal
(2) stub axle radial seals
shift selector radial seal
differential cover o-ring
(2) transaxle fill plugs
(2) rear shifter coupling bushes (plastic)
ball cup shifter joint

Pricing as follows:
G31/G16 Ultimate Rebuild Kit: $310
Includes everything in the list above

G31/G16 Deluxe Rebuild Kit: $136
Seal kit, 2 fill plugs, and shift linkage bushings. NO synchro rings included.

G31/G16 Basic Rebuild Kit: $72
Seal kit only (no synchro rings, filler plugs, or shift linkage bushings)

Finally, I've also found a source for upgraded brass bushings for the rear coupler on the G31 shift rod. I'm still waiting to confirm pricing, and will post it here as soon as I have it.

Let's get those snailshells back on the road in 2010, boys!
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erstwhile owner of just about every 924 variant ever made

Rocco R16V · Joined: 03 May 2009 Posts: 497 Location: PNW

Thank You!
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"Government exists to protect us from each other. Where government has gone beyond its limits is in deciding to protect us from ourselves. "
Ronald Reagan

Dutch924-racer · Joined: 23 Jul 2007 Posts: 1081 Location: The Netherlands

Is this a better synchro the original ? Like the 937 one: ?

http://www.924board.org/viewtopic.php?t=21566&highlight=carrera++synchro
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937 trackday car
Series 2 engine
951S turbo and intercooler
Fast road camshaft
Forge recirculation valve + boost controller

ideola · Joined: 01 Oct 2004 Posts: 15550 Location: Spring Lake MI

v8carrera seems to think so, and that it will fit. I'll find out about availability, might be a better alternative. However, until someone actually installs and confirms compatibility...
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erstwhile owner of just about every 924 variant ever made

CorsePerVita · Joined: 25 Jul 2008 Posts: 1992 Location: Redmond, Oregon

Let's say you've never rebuilt a transmission before. On a scale of 1 to 10 assuming you're rebuilt an engine, and know how to work on cars, how hard is a rebuild?
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- 1977 Porsche 924 2.0 N/A (Trackday Project)
- 1979 Porsche 924 2.0 N/A (The other daily)
- 1980 Porsche 931 (Daily)
- 1987 Lamborghini Jalpa
- 1999 Ducati 900SS

gegge · Joined: 27 Jul 2007 Posts: 1124 Location: Sweden

The G31 is based on 915 and relative easy to work with. There are several rebuild websites and it is no rocketscience. I intend to do it myself with no experience at all

_________________
Carl Fredrik Torkildsen

924 turbo -81 Carrera GT RESTOMOD
924 turbo -80 Dolomite De Luxe
924 -85 DP kit, BBS RS, M030 and tuned engine
924s -86 Black on black turbo with Fuchs

Rich H · Posted: Mon Jan 04, 2010 8:45 pm Post subject:

Will probably take a kit once I stert on my spare box. I have no synchro left on 1 and little on 2 at the moment...
_________________
1994 Lotus Esprit S4 - Work in progress...
1980 Porsche 924 S2 DITC Turbo - Original spec
1978 Homo-Sapiens - Tired spec
1953 Landrover S1 - Pensioner Spec

morghen · Joined: 21 Jan 2005 Posts: 9095 Location: Romania

hold on a minute....i dont agree...it is not as straigth forward as it sounds.

i've been turned down by experienced mechanics to rebuild a 911 gearbox, they said: we dont know the tolerances and torque specs of the geargox...we ended up with one mechanic who did the rebuild.

a friend of mine rebuilt his corrado gearbox and it blew at 100mph after a few weeks of use.
the 911 gearbox i was talking also blew after a few months of use.

As a conclusion...i'm quite sure there are specs to follow and special tools to have when rebuilding a gearbox.
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Supercharger and EFI kits
https://www.the924.com

ideola · Joined: 01 Oct 2004 Posts: 15550 Location: Spring Lake MI

I don't think the gearbox is nearly as difficult as fitting the diff, from what I understand. I believe the front section of the G31 can be redone without disturbing the diff...
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erstwhile owner of just about every 924 variant ever made

Rich H · Posted: Mon Jan 04, 2010 9:03 pm Post subject:

I thought they were in the manual - I thought the strip down instructions included them...

_________________
1994 Lotus Esprit S4 - Work in progress...
1980 Porsche 924 S2 DITC Turbo - Original spec
1978 Homo-Sapiens - Tired spec
1953 Landrover S1 - Pensioner Spec

ideola · Joined: 01 Oct 2004 Posts: 15550 Location: Spring Lake MI

I've got the torque specs somewhere...I'll post them later.
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erstwhile owner of just about every 924 variant ever made

CorsePerVita · Joined: 25 Jul 2008 Posts: 1992 Location: Redmond, Oregon

PORSCHEV · Posted: Mon Jan 04, 2010 9:22 pm Post subject:

I have only taken apart one manual gearbox in my life and it was from a lawn tractor. I did manage to get it back together but would never attempt one by myself.

I would go see some of the local transmission shops and see if you could talk them in to letting you watch the first time around...I am sure they could teach you all kinds of tricks.
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1976 924
5 lug conversion, 17'C2 wheels,custom body work,327 vette engine.

1978-#53 "D" track racer.

gegge · Joined: 27 Jul 2007 Posts: 1124 Location: Sweden

http://m-elliott.us/Porsche/G31Rebuild.htm
_________________
Carl Fredrik Torkildsen

924 turbo -81 Carrera GT RESTOMOD
924 turbo -80 Dolomite De Luxe
924 -85 DP kit, BBS RS, M030 and tuned engine
924s -86 Black on black turbo with Fuchs

Fifty50Plus · Posted: Tue Jan 05, 2010 2:00 am Post subject:

I've done a few dozen 356 and 911 boxes. Some special tools are required as well as a press. If you are just replacing the dog teeth and synchro rings, you don't need the differential measuring tool. It's not rocket science but you need to pay strict attention to the spacing of the gear sets and all the springs and balls in the detent assy.
After I get the rebuild kit from Ideola, I'll let you know about the dogleg box.
Chuck
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1979 924 NA race car H-Prod SCCA
1982 924 NA race car - Sold
1981 924 Turbo sold
1982 924 Turbo sold
1972 911 E race car - traded for Cayenne Diesel
1975 914 1.8 Building for H-Prod SCCA