S Type LSD? Lincoln LS Install
#261
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Very possibly Tom is willing to sell on his experience but I would guess "sell" is the operative word as he makes a living from this kind of thing.
I wouldn't argue but all along seems everyone wants a very cheap LSD and all along it really looks like no such thing exists. A real expert (TL Jaguar) chose the Quaife for good reasons. Doesn't prove there's no cheap alternative but tends to point towards that, especially as people have been on the hunt for years now.
#262
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I've just ordered a Quaife from Tom at TL Jaguar, we've had quite some discussion about the install because my local guy will do it.
Tom says that for my 2004 built XJR, the Quaife is a simple direct bolt-in, no machining needed. However later models, lets say 2007 onwards have a slightly different housing, and that is where the modification is needed. Also, if your car had the diff replaced under warranty after around 2007 then the same applies.
Should be the same for S-Types, i guess.
Will be a few weeks until i can give feedback about the install process.
Also, Tom will sell you a complete diff with the LSD fitted, but it ain't cheap because he has to buy a complete unit in the UK, which adds to the cost. He wasn't interested in getting my unit in exchange because of shipping costs.
Tom says that for my 2004 built XJR, the Quaife is a simple direct bolt-in, no machining needed. However later models, lets say 2007 onwards have a slightly different housing, and that is where the modification is needed. Also, if your car had the diff replaced under warranty after around 2007 then the same applies.
Should be the same for S-Types, i guess.
Will be a few weeks until i can give feedback about the install process.
Also, Tom will sell you a complete diff with the LSD fitted, but it ain't cheap because he has to buy a complete unit in the UK, which adds to the cost. He wasn't interested in getting my unit in exchange because of shipping costs.
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bfsgross (03-04-2013)
#263
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Yes we know that Quaife is a legitimate differential. They made a unit for Maserati called the "Ranger" back in the late 80's to mid 90's. It replaced a Torsen unit they were using before that. I have one of the Torsen units and it's not all that effective. The Quaife was eventual replaced by Ferrari with a more garden variety ZF LSD unit with the plates. I have one of those in my track car and it does the job very, very well. I have not tried out a Quaife differential though.
These differentials can perform somewhat differently from each other also depending on how they're set up. So that's one of the issues. Then there's the issue of how people like it in the S-Type along with the cars electronics being engaged.
That, I am interesting in hearing about from someone who owns one but does not have an axe to grind.
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bfsgross (03-04-2013)
#264
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I wasn't going to post more about my upgrade project, but my machined housings arrived back, so I am kitting the parts to have one assembled. I will have close to $1700 in parts and labor for this Mark VIII build: Torsen T-2R 31 spline LSD, New 3:55 gear and pinion set, Bearing Rebuild kit, seals, outer bearings, Bearing girdle stud kit, the 2000 S-type Core to get a donor cover, new pinion flange, oil, and Silicone sealant. A pair of new grade 10.9 metric bolts to hold the cover to the sub-frame cost me close to $20.00 (It add up so fast these days) Please remember that I am building a rear suspension sub-frame assembly that will handle 600+HP. What I am doing is not your standard addition of LSD.
- I am sure my custom built half-shafts/axles will cost close to $1500.
- Purchasing a used pair of upper and lower Control arms and pressing in new bushings will run close to $1K.
- New sway bar links and tie rod links, new outer hubs, hub carrier bearings. $$
It adds up way over $4K really fast. Plus I am doing 90% plus of the labor.
- I am sure my custom built half-shafts/axles will cost close to $1500.
- Purchasing a used pair of upper and lower Control arms and pressing in new bushings will run close to $1K.
- New sway bar links and tie rod links, new outer hubs, hub carrier bearings. $$
It adds up way over $4K really fast. Plus I am doing 90% plus of the labor.
#265
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I think you've misunderstood me.
These differentials can perform somewhat differently from each other also depending on how they're set up. So that's one of the issues. Then there's the issue of how people like it in the S-Type along with the cars electronics being engaged.
That, I am interesting in hearing about from someone who owns one but does not have an axe to grind.
These differentials can perform somewhat differently from each other also depending on how they're set up. So that's one of the issues. Then there's the issue of how people like it in the S-Type along with the cars electronics being engaged.
That, I am interesting in hearing about from someone who owns one but does not have an axe to grind.
I've experienced numerous times now where I am under full acceleration and when a tire breaks free, the crappy traction control over reacts and restricts the throttle, and or breaks the slipping tire. This makes for a very rough attempt to accelerate. I'll take a car with a good LSD any time over Traction control in the STR. I prefer to feather the throttle myself rather than have the car do it for me!
Personally I prefer a Torsen over a True-trac for Auto-crossing, track racing, or performance street work. (I don't have interest in drag racing.) The Torsen T-2R has the best torque bias ratio of the mass produced LSDs. As far as performance goes, I believe the Quaife and the Torson T2 have about the same performance characteristics. I have never ran a Quaife but I believe them to be an excellent LSD.
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bfsgross (03-05-2013)
#266
#267
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This was the original post when I started this project several years ago. I worked away from home for more than a year, and only started working on the car again several months ago.
In a nut shell, I put a 2010 LS3 with TR6060 6 speed manual into a 2000 S-type.
Most of the drivetrain mechanical is complete, but I am only about 1/3 of the way through rewiring the car to work like a 2009 Pontialc G8. (I dislike doing electrical wiring, but that's primarily what needs to be finished to get the car running.) I prefer mechanical projects over electrical, so that is probably why I took on a rear-end upgrade before finishing the electrical.
#268
#269
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Today: Spoke with Eric (DTS). He's putting together a quote for Quaife LSD install. If we send our differential with Quaife, he'll install it with new carrier bearings ($40) for $150 labor. He's also putting together a package deal where he supplies the Quaife and bearings. He reiterated the issue with our test mule diff.: they could have put a Traction- Lok in but it would have necessitated custom axles with an S-Type at their disposal to properly mock-up.
#270
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#274
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Well my XJR is in the workshop as we speak, in addition to the transmission fluid/pan change, fitting a 3lb pulley, Bosch 010 intercooler pump and a full service, they are also fitting a Quaife QDF3W...
![](https://www.jaguarforums.com/forum/attachments/s-type-s-type-r-supercharged-v8-x200-15/36746-s-type-lsd-lincoln-ls-install-sdc13306.jpg?dateline=1363701296)
Unfortunately the 3.58:1 ring & pinion is still sitting here under my desk, damn the lack of TCM reprogramming...![Frown](https://www.jaguarforums.com/forum/images/smilies/frown.gif)
I left a camera with the mechanic & asked him to take a few pictures during the installation, so let's see how the next few days pan out...
![](https://www.jaguarforums.com/forum/attachments/s-type-s-type-r-supercharged-v8-x200-15/36746-s-type-lsd-lincoln-ls-install-sdc13306.jpg?dateline=1363701296)
Unfortunately the 3.58:1 ring & pinion is still sitting here under my desk, damn the lack of TCM reprogramming...
![Frown](https://www.jaguarforums.com/forum/images/smilies/frown.gif)
I left a camera with the mechanic & asked him to take a few pictures during the installation, so let's see how the next few days pan out...
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#275
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Very nice, that quaife unit is a real nice piece of kit, please keep us informed how the install goes, hopefully a shot of the 'machining' that is said to be needed to the inside of the carrier, and if they do it on a mill or just a die grinder?
bfsgross - did DTS get back to you with a price on the quaife, and price of quaife installed?
Besides a twin screw, an LSD upgrade is one of the must-have mods for my STR...
bfsgross - did DTS get back to you with a price on the quaife, and price of quaife installed?
Besides a twin screw, an LSD upgrade is one of the must-have mods for my STR...
#276
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bfsgross (03-19-2013)
#278
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