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slpdesign99 · Posted: Mon Dec 22, 2014 5:43 am Post subject: Porsche 924 N/A LSD fit 931?

I have found a 1977 Porsche 924 N/A with an LSD. Is it possible to fit this in my 931?

Are there and difference or things I should look for ask owner?
_________________
Scott (slpdesign 99)
1982 Porsche 924 Turbo
1964 Saab 96 Sport Replica
2008 Renaultsport Megane Team F1 R26
2006 Jeep Grand Cherokee SRT8
1990 Daihatsu Charade GTti Tarmac Rallycar
1979 Volvo 242GT, 4.2l V8

leadfoot · Posted: Mon Dec 22, 2014 8:12 pm Post subject:

No, you have a 25mm driveline, you want to go for either a g31 with lsd (very rare) or source a 944turbo box. A 944 box will work but is not as strong as the turbo box,
Stu
_________________
1981 ROW 924 Turbo -
carbon fiber GT mish mash
LS1 conversion in progress...

slpdesign99 · Posted: Mon Dec 22, 2014 9:23 pm Post subject:

fiat22turbo · Joined: 18 Jan 2006 Posts: 4040 Location: Portland, OR

The diff might swap over, but you'll likely want to refresh the box and diff since you'll need to set the lash, etc.
_________________
Stefan
1979 924 Carrera GTS (clone-ish)
1988 944 Turbo S (Silver Rose)

Raceboy · Joined: 01 Mar 2004 Posts: 2327 Location: Estonia, Europe

The diff will not swap over, they are completely different.

G31 also accepts 915 and 930 diff, but 915 diff has to be fine spline unit (meaning 1976 or later iirc). Coarse spline diff would fit if modified but that is too much for most.

But I would surely be interested in the 924NA diff.
_________________
'83 924 2.6 16v Turbo, 470hp
'67 911 2.4S hotrod
'90 944 S2 Cabriolet
'78 924 Carrera GT replica
'84 928 S, sold
'91 944 S2, sold
'82 924S/931 "Gulf", sold

'84 924, turbocharged, sold.
http://www.facebook.com/vemsporsche

fiat22turbo · Joined: 18 Jan 2006 Posts: 4040 Location: Portland, OR

Crap, sorry I forgot that the ROW 931 had the dogleg 915-based box. Too used to the US.

So, never mind. Carry on

_________________
Stefan
1979 924 Carrera GTS (clone-ish)
1988 944 Turbo S (Silver Rose)

v8carreragts · Joined: 05 Sep 2003 Posts: 665 Location: Tucson, AZ

Only the 79-80 US cars have the G31. 81-82 US cars have the AUDI 016 so the diff might swap. The 77 has a 4 spd and has a designation of 088 so i am not sure that they will swap. Your list shows 82 931 so you have the AUDI unit unless someone replaced everything with the G31.
_________________
84 944--924 Carrera GTS clone w/520HP Chevy 302 V8--RUNNING!
2015 AUDI Q7
2013 Dodge Charger R/T AWD HEMI
2013 Chevy Cruze

slpdesign99 · Posted: Tue Dec 23, 2014 9:03 am Post subject:

Thanks for all the advice. Yes my car is a Australia Delivery 02/1982 build with the dogleg 5 speed gearbox.

What's the best way to check which gearbox/diff I have?
_________________
Scott (slpdesign 99)
1982 Porsche 924 Turbo
1964 Saab 96 Sport Replica
2008 Renaultsport Megane Team F1 R26
2006 Jeep Grand Cherokee SRT8
1990 Daihatsu Charade GTti Tarmac Rallycar
1979 Volvo 242GT, 4.2l V8

fiat22turbo · Joined: 18 Jan 2006 Posts: 4040 Location: Portland, OR

Build tag in the trunk and there should be a code stamped on the transaxle case
_________________
Stefan
1979 924 Carrera GTS (clone-ish)
1988 944 Turbo S (Silver Rose)

v8carreragts · Joined: 05 Sep 2003 Posts: 665 Location: Tucson, AZ

I didn't notice where you were from.

Here is where the G31 S/N is:

_________________
84 944--924 Carrera GTS clone w/520HP Chevy 302 V8--RUNNING!
2015 AUDI Q7
2013 Dodge Charger R/T AWD HEMI
2013 Chevy Cruze

Raceboy · Joined: 01 Mar 2004 Posts: 2327 Location: Estonia, Europe

4spd diff is interchangeable with Audi 016 5spd diff, btdt.
_________________
'83 924 2.6 16v Turbo, 470hp
'67 911 2.4S hotrod
'90 944 S2 Cabriolet
'78 924 Carrera GT replica
'84 928 S, sold
'91 944 S2, sold
'82 924S/931 "Gulf", sold

'84 924, turbocharged, sold.
http://www.facebook.com/vemsporsche