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XK / XKR ( X150 ) 2006 - 2014

5.0L XK NA, LSD confirmed

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  #21  
Old 06-06-2018, 04:23 AM
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Originally Posted by insomniac_driver
Just curious guys, would this be doable to an S-Type R as well? Looking for a cheaper alternative instead of going the Quaife route. Ideally would want to find a ford LSD that痴 guaranteed fit but if I can find an F-Type diff on eBay it would be ideal.
well, I知 not sure. Subframes are different most likely.
And you値l be lucky to find an f-type diff for less then quaife
 
Last edited by Andrey; 06-06-2018 at 04:26 AM.
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  #22  
Old 06-06-2018, 06:03 AM
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Originally Posted by Andrey

well, I知 not sure. Subframes are different most likely.
And you値l be lucky to find an f-type diff for less then quaife
ah, I知 in the search of a Mustang or Lincoln LS LSD that would bolt in.
 
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  #23  
Old 06-06-2018, 06:09 AM
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S-Type R is 2.87:1

F-Type V6S, and XK is 3.31:1

You can't put a 3.31:1 in an S-Type R the difference in ratio is too great, will throw up codes and limp mode.

There's no Ford diff with LSD that's a straight swap.

Your choices for the STR are Quaife or mini-spool, or CIG-Locker

5.0L XK NA, LSD confirmed-photo478.jpg
 
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  #24  
Old 06-07-2018, 01:34 AM
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The actual LSD part does not involve gear swapping which I already know the transmission will throw a fit if it gets messed with.
 
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Old 06-07-2018, 01:55 AM
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But there is no Ford LSD that fits inside the 8" diff housing. We tried them all.
 
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  #26  
Old 06-09-2018, 06:08 AM
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I thought the ratio in the S-Type R could be reprogrammed now
 
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  #27  
Old 06-09-2018, 06:59 AM
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Originally Posted by Panthro
I thought the ratio in the S-Type R could be reprogrammed now
You do realise I'm running a lincoln 3.58 diff in my xk

Yet to take it back down the track but the difference is very very noticeable
 
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  #28  
Old 06-10-2021, 02:20 PM
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Default 25k miles, no issues whatsoever
And I kick the butt every time I drive it. Powersliding every corner. Doughnuts every now and then.
 
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  #29  
Old 06-08-2022, 03:42 PM
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Originally Posted by Andrey
Elviukai, no issues so far, 5k miles. As I stated, it's a straight bolt on. Nice add-on not only for spirited or track driving but also a must have for Moscow winter driving. Some more observations: the diff doesn't limit slip when in rear gear; nice 11s in any steering angle conditions, just floor it. Can do donuts for hours, I doubt E-diff would withstand that (I did that in icy and cold winter conditions only so that the load was minimal. Would not suggest abuse the mechanical diff in grippy conditions as there would be no indication for overheating)

Regards
Do I understand correctly - F-type V6S RWD diff fits with no adjustments to XK 5.0 NA?

Planning to do the same thing, so just want to be sure.
 
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  #30  
Old 06-08-2022, 09:38 PM
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Originally Posted by rula
Do I understand correctly - F-type V6S RWD diff fits with no adjustments to XK 5.0 NA?

Planning to do the same thing, so just want to be sure.
Where are you located, Rula? Am curious if we can compare notes on the build in person, if I have to do mine.
 
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  #31  
Old 06-09-2022, 12:36 AM
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Estonia 🙂
 
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  #32  
Old 06-09-2022, 05:14 AM
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Originally Posted by rula
Do I understand correctly - F-type V6S RWD diff fits with no adjustments to XK 5.0 NA?

Planning to do the same thing, so just want to be sure.
Correct. No adjustments whatsoever, Rula. The only caveat is one needs to unbolt the rear reinforcement cross brace front bolts in order to be able to slide the F-Type unit into place. And those bolts are attached to hidden hard to reach studs that tend to fail. There is a thread somewhere on the alu XJ X350 forum on how to deal with that matter.
I致e since sold the car with some 120+ thousand km on the clock and the F-Type diff was going strong and with no issues.
 
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  #33  
Old 06-09-2022, 06:33 AM
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Originally Posted by Andrey
Correct. No adjustments whatsoever, Rula. The only caveat is one needs to unbolt the rear reinforcement cross brace front bolts in order to be able to slide the F-Type unit into place. And those bolts are attached to hidden hard to reach studs that tend to fail. There is a thread somewhere on the alu XJ X350 forum on how to deal with that matter.
I致e since sold the car with some 120+ thousand km on the clock and the F-Type diff was going strong and with no issues.
THANKS! And the F-type diff was T2R4000 / EX53-4A213-AA, correct ?
 
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  #34  
Old 06-10-2022, 04:14 AM
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Originally Posted by rula
THANKS! And the F-type diff was T2R4000 / EX53-4A213-AA, correct ?
Correct, the engeneering number is clearly visible on one of the diff pics I致e posted, and I suggest that you pay attention to that, the part number they advertise on Ebay T2R4000 may misrepresent an 340hp open diff for an LSD
 
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  #35  
Old 06-10-2022, 04:39 AM
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Thank you a lot, great!
 
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