924Board.org

lordam · Joined: 31 Dec 2002 Posts: 46 Location: New South Wales

Does anyone know which 924 or 931 models were delivered with a LSD?

In some competition regulations, factory special bits are not allowed, but factory options are. I know the Porsche 220 option is for a 40% LSD.

But there is reference in the Haynes book to some 924 automatics being fitted with LSD as standard.

Can anyone confirm this and any other models where the LSD was fitted as standard?

Of course then the question arises as to which LSD is was, and where to find one that will fit a snailshell.

John
931 Guards Red '82

Lizard · Posted: Fri Jan 09, 2004 1:42 pm Post subject:

it was an option on all of them, except iirc the cgt I think
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3 928s,

Benino · Posted: Fri Jan 09, 2004 4:36 pm Post subject:

how do you know if your car has that option?
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1980 Porsche 924 N/A USA
1980 Porsche 924 turbo USA
1987 Porsche 944S USA

CBass · Joined: 03 Nov 2002 Posts: 2807 Location: Vancouver, Canada

http://www.pelicanparts.com/944/tech_specs/option_codes.htm

This link gives the LSD as option #220, so it would say under the hood on the options list. It also lists #221 as a "Porsche locking differential". Interesting.

You can also tell by the last number of the part # on the transmission itself, although I can't recall what it is...

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'81 931 in various states of assembly

Lizard · Posted: Sat Jan 10, 2004 1:35 am Post subject:

under the carpet in the rear by the spare tire there "should" be a option sticker which would list it, if not the origanil owners manual would list it, if you have neither then you can have the PCA get a birth certificate of you car by the serial # which states the options the car came with
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3 928s,

81turbo · Joined: 03 Nov 2002 Posts: 1065 Location: Oakland, CA

I doubt that the Porsche Club of America (PCA) can get that for you.

I belive you meant PCNA, Porsche Cars North America.

Smoothie · Posted: Sat Jan 10, 2004 2:05 am Post subject:

A "(12)" at the end of the transaxle's serial number is supposed to indicate an LSD.

or...

Just jack up one rear wheel, parking brake released, gearbox in neutral.. If you can spin the wheel, you do not have an lsd (or you have one that's not working). If you can't spin it, you do have a lsd.

http://www.924board.org/viewtopic.php?t=9782
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"..it's made in Germany. You know the Germans always make good stuff."

'82 924T, US version, dark green metallic, 5 speed Audi 016G gearbox

924RACR · Posted: Sat Jan 10, 2004 3:58 am Post subject:

If you're simply looking to find a factory LSD to fit your existing trans, that's a little easier. The later 951 LSD will fit the 5-speed Audi-based trannies - both 931 and 924, even though the trannies are different. I have heard that the 930 LSD should fit the snailshell trannies. The only one that seems to be an issue is the early 4-speed trans.

HTH...
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Vaughan Scott
Webmeister
'79 924 #77 SCCA H Prod racecar
'82 931 Plat. Silver
#25 Hidari Firefly P2 sports prototype

1982Porsche924 · Joined: 14 Nov 2002 Posts: 679 Location: Cupertino, CA

924RACR · Posted: Mon Jan 12, 2004 12:37 am Post subject:

Cash. Lots of it.

Check out on rennlist, there's often some listed there. I should clarify, it's a common 930/911 LSD IIRC. But I haven't proven the fit myself, so while I say SHOULD fit, I don't guarantee it. As always, YMMV... Call a place that does the trannies for a living, like Guard Transmission or PowerhausII if you want a better degree of certainty.
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Vaughan Scott
Webmeister
'79 924 #77 SCCA H Prod racecar
'82 931 Plat. Silver
#25 Hidari Firefly P2 sports prototype

-nick · Joined: 16 Nov 2002 Posts: 2699 Location: Cambridge, MA

The /12 identifier is only on the snailshell tranny. From what I can tell the '82 924na's had an LSD option with the code identifier being either 4Q (RoW) or 5Q (US). I think this should be stamped at the top of the transmission bellhousing. -This is on the Audi boxes. The 931's with the LSD-optioned Audi box should have a 6Q identifier.

The 930 LSD is different from the 931 LSD by the last digit of the part number. Hard to say what the change might be, or if only an update.

FYI- I don't think that PCA can get much info at all on original options based on VIN. Does anyone know for sure if PCNA can?

-nick