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I have called a couple shops regarding putting a LSD in and they all have told me there is some machining of the falnges

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YOUR RESEARCHI have called a couple shops regarding putting a LSD in and they all have told me there is some machining of the falnges

Leading reported evidence

Use 993 turbo stub axles

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Unsuccessful attempts: 1
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Suggestion
To install a LSD in the 6-speed transaxle you must shorten & drill a hole in the trans end of both stub axles or use 993 turbo stub axles which bolt on.
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I have called a couple shops regarding putting a LSD in and they all have told me there is some machining of the falnges

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Leading evidence: 'Use 993 turbo stub axles' (no explicit attributable resolution; this is a reported action or suggestion). Across 1 matching discussions, The most frequently discussed action is 'Use 993 turbo stub axles' (1 discussions). For that action, 0 discussions report a resolution and 0 report an unsuccessful attempt. No action has an explicit, attributable resolution report under the current rules. These are forum reports and suggestions, not a confirmed diagnosis.

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Use by in flange, like every lsd

Suggestion or failed attempt

No successful repair reported for this finding.

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Unsuccessful attempts: 1
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Discussions that contain suggestions: 1

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Suggestion
The factory LSD uses a by in flange, like every LSD that Porsche has ever produced.
Original post Read captured discussion
I have called a couple shops regarding putting a LSD in and they all have told me there is some machining of the falnges

Use same differential as a g50 or gt3

Suggestion or failed attempt

No successful repair reported for this finding.

0
Reported fixes: 0
Unsuccessful attempts: 1
Discussions

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Discussions that contain suggestions: 1

0 original-poster resolution reports. Counts can overlap; they are not unique people or a success rate.

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Suggestion
The reason the aftermarket doesn't make an LSD that attaches with a circlip like the original open differential is because the 996 uses the same differential as a G50 or GT3.
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I have called a couple shops regarding putting a LSD in and they all have told me there is some machining of the falnges

Frequently discussed actions (3)

These are separate views of the same evidence. Frequency alone does not establish a fix, and these counts must not be added together.

Use 993 turbo stub axles

No successful repair reported for this finding.

0
Reported fixes: 0
Unsuccessful attempts: 1
Discussions

Read evidence and context

Discussions that contain suggestions: 1

0 original-poster resolution reports. Counts can overlap; they are not unique people or a success rate.

0 discussions have direct query context; 0 report a fix in that context. Other evidence may inherit the discussion’s subject.

Suggestion
To install a LSD in the 6-speed transaxle you must shorten & drill a hole in the trans end of both stub axles or use 993 turbo stub axles which bolt on.
Original post Read captured discussion
I have called a couple shops regarding putting a LSD in and they all have told me there is some machining of the falnges

Use by in flange, like every lsd

No successful repair reported for this finding.

0
Reported fixes: 0
Unsuccessful attempts: 1
Discussions

Read evidence and context

Discussions that contain suggestions: 1

0 original-poster resolution reports. Counts can overlap; they are not unique people or a success rate.

0 discussions have direct query context; 0 report a fix in that context. Other evidence may inherit the discussion’s subject.

Suggestion
The factory LSD uses a by in flange, like every LSD that Porsche has ever produced.
Original post Read captured discussion
I have called a couple shops regarding putting a LSD in and they all have told me there is some machining of the falnges

Use same differential as a g50 or gt3

No successful repair reported for this finding.

0
Reported fixes: 0
Unsuccessful attempts: 1
Discussions

Read evidence and context

Discussions that contain suggestions: 1

0 original-poster resolution reports. Counts can overlap; they are not unique people or a success rate.

0 discussions have direct query context; 0 report a fix in that context. Other evidence may inherit the discussion’s subject.

Suggestion
The reason the aftermarket doesn't make an LSD that attaches with a circlip like the original open differential is because the 996 uses the same differential as a G50 or GT3.
Original post Read captured discussion
I have called a couple shops regarding putting a LSD in and they all have told me there is some machining of the falnges

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4 eligible posts · 0 unverified posts · 1 discussions match the subject in their title or opening post.

Pelican Parts: 1 discussions

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POST 1 / ORIGINAL POSTEROriginal post

I have a 1999 996, I have called a couple shops regarding putting a LSD in and they all have told me there is some machining of the falnges to properly fit the GT or a OS GIKEN unit. Your thoughts. V/r Bob Hallett __________________ This post was auto-generated based upon a question asked on our tech article page here: Pelican Porsche Tech Article - Replacing Porsche 911 Carrera Limited Slip Differential Carrier Bearings and Seals - Porsche 996 Carrera (1998-2005), Porsche 997 Carrera (2005-2008)

POST 2Original post

The factory 996 LSD obviously fits no problem. As far as a retrofit or aftermarket, you'll have to trust your installer. it depends on the model of the LSD. I opened a post in our forums, a community member may be able to better answer your question. - Nick

POST 3Original post

To install a LSD in the 6-speed transaxle you must shorten & drill a hole in the trans end of both stub axles or use 993 turbo stub axles which bolt on.

POST 4Original post

Nick, The factory LSD uses a by in flange, like every LSD that Porsche has ever produced. The reason the aftermarket doesn't make an LSD that attaches with a circlip like the original open differential is because the 996 uses the same differential as a G50 or GT3. The 996 market is no big enough to warrant designing a completely new product line when bolt in flanges are so readily available in the used market or can still be purchased new. Any 993 or 996 GT3 flange can be used as the bolt pattern on the cv hasn't changed. One can also shorten and through drill the stock flange but shouldn't assume that it is a cheap or easy modification. Those flanges are hardened and don't cut like butter. There is some machine time involved and you must be sure not to over shorten it. If it bottoms out on the body of the LSD that is a bad thing. It needs to bottom on the inner gear to which it bolts, on not on the outer bearing flange.

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