[jeff968]

<!--quoteo(post=79717:date=Sep 8 2009, 08:07 PM:name=blue968)-->QUOTE (blue968 @ Sep 8 2009, 08:07 PM) <{POST_SNAPBACK}><!--quotec-->Hey Guys thanks for the simple explanations. Finding the code 220 on my tag in my car explains why the tires never spin. I have never drove a 968 w/o LSD which is why I didn't know the diff. I always thought the car just never seem to have enough power to spin the ires. I guess I was wrong.

Thanks again<!--QuoteEnd--><!--QuoteEEnd-->

Yes, 220 is what you needed to find. Also, keep in mind there were two types of LSD for the 968, both with option code 220. For 92s you'll find the ZF unit and 93-95s get the Torsen (torque sensing) unit. Both versions have fans. Another funny thing, tiptronics all have limited slip. That is the way they built those expensive auto trannys.

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[flash]

according to everything i have, 221 is the locking clutch type - 220 is the 40% torsen diff

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[rustech]

<!--quoteo(post=79916:date=Sep 11 2009, 06:38 PM:name=jeff968)-->QUOTE (jeff968 @ Sep 11 2009, 06:38 PM) <{POST_SNAPBACK}><!--quotec-->Another funny thing, tiptronics all have limited slip. That is the way they built those expensive auto trannys.<!--QuoteEnd--><!--QuoteEEnd-->

Are you $#%& kidding me? Don't give the LSD to the 6-spd with shorter gears, give it to the auto? Does everyone with Tiptronic have code 220/221?

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[flash]

lol - it's true - not sure what kind it is, or why the did it, but it's there - no 220 or 221 though - the tip even has the ability to sense lateral acceleration changes to keep the thing in the right gear - pretty sophisticated unit actually

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[ABrownWhite968]

I'm wondering if anyone knows what's up with my LSD. I changed my transaxle fluid to Motul and now I'm getting a shuddering at the back of my car in shorter radius turns. Like my LSD is totally locked and the two rear tires are fighting with each other. No sounds accompany this shuddering.



Does anyone know what I've got?



Thanks.



Alan

1992 White 968 Coupe

Shuddering in Vancouver

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[pure&amp;simple]

My understanding is that some amount of shudder on tight turns is normal for a clutch-type LSD. I have the OS/Giken and I feel shuddering only when I have the steering really cranked, like when backing out of a parking space. My brother has a clutch-type on his WRX and the shudder is very apparent all the time. Some LSDs do a better job of hiding this than others. Of course that doesn't explain why your LSD is now exhibiting this behavior all of a sudden after a fluid change.

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[flash]

many clutch type lsd units require a specific kind of fluid, or an additive for the clutches

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[968rz]

I'm not so sure my Tip has LSD; if I remember right the last time I had it in the air the tires spun different directions. I'll check later this week when I change the oil and post my findings.

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[flash]

unfortunately, that test does NOT work on anything but a clutch type LSD or a detroit locker - on any kind of torque sensing differential, what the opposite wheel does can vary, depending on the settings of lockup and how fast you turn the wheels



as far as we know, all Tips came with some form of lsd - not sure what it is, but my guess is a type like the Torsen the later 968 manuals had for an option

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[968rz]

And here I thought the lack on wheel spin was due to the power loss through the trans.

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[RS Barn]

Clutch style LSD units can be sensitive to fluids types and changes. I've changed fluid and had them chatter for awhile and then be fine.

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