924Board.org

[LS1951]

Quaife lists an application for 1986 and up 944's only. Is there a difference between the 83-85 016 trans. and the 86 up 016? I called Quaife America and a Porsche transmission shop and neither one could say for sure if they are the same.
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1987 951- LS1 V8 -Sold
1981 931- Holbert 924H kit -Sold
1980 931- Sold
1965 912- 911 RS replica w/subaru ej20 turbo- Sold
1983 Callaway 944 turbo conversion- Sold
1987 944 Turbo
1977 924 project

[ideola]

Steve (bass gt) ran a Quaife unit at one point (though I'm not sure which car it was in), but didn't like the torque biasing for track use. IIRC, he subsequently ran the 951 LSD and found the gearing too tall, so now he's going all out and fitting a 968 6-speed with LSD.

Here is some related information with some additional links on the general subject of LSDs, along with an article from Guard Transmission's website that makes for some good reading.
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erstwhile owner of just about every 924 variant ever made

[LS1951]

Thanks for those links. I already have a Quaife that was going to go into my 951 but I'm thinking about selling the car. I wanted to make sure it would fit in my 931. Looks like it should work.
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1987 951- LS1 V8 -Sold
1981 931- Holbert 924H kit -Sold
1980 931- Sold
1965 912- 911 RS replica w/subaru ej20 turbo- Sold
1983 Callaway 944 turbo conversion- Sold
1987 944 Turbo
1977 924 project

[924RACR]

I'm using the 951 factory LSD in my 5-speed 924 NA box, in the racecar; bolts in directly, just have to re-shim the diff (not that that's easy!). I'm pretty sure the diff itself is interchangeable between all the Audi boxes...
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Vaughan Scott
Webmeister
'79 924 #77 SCCA H Prod racecar
'82 931 Plat. Silver
#25 Hidari Firefly P2 sports prototype