XJ XJ6 / XJ8 / XJR ( X350 & X358 ) 2003 - 2009

XJR vis XJ Super V8

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Old Sep 17, 2009 | 07:05 AM
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Default XJR vis XJ Super V8

I'm looking at both and will do a face lift on either, 2009 style body color grill and boot tail cover with full length chrome strip trunk lip spoiler. Will also add backup camera from 2010 XF.

Other than the obvious, wheel base and a few amenities are there any major differences between the XJR vis XJ Super V8? It's a Little heaver but I'm more interested in performance (not much difference I bet) and handling.

Anyone actualy had a chance to 'ring out' both of them?
 
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Old Sep 17, 2009 | 04:09 PM
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The Super V8 is a Vanden Plas with the supercharged engine. For handling, the XJR is the way to go, but most Jag owners are not going to use their cars on the track. The stiffer suspension and short wheelbase will suffer the ride quality. In the Super V8, the longer wheelbase and softer suspension will give you a more plush ride with similar performance.
 

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Old Sep 17, 2009 | 04:18 PM
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The biggest factor in handling of a passenger car is tires. I've driven both cars on the track but with different size tires and types it's difficult to compare. Since the XJR had 20's it definitely did handle better.

I have lowered my own XJR and that did increase handling performance without sacrifincing ride quality.
 
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Old Sep 18, 2009 | 01:00 AM
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Originally Posted by hlgeorge
For handling, the XJR is the way to go, but most Jag owners are not going to use their cars on the track.
I am one of those very awkward Jaguar owners that does take their car to the track...

You would not believe the feedback I get when people realize that my XJR is perfectly capable of holding it's own on a track, dragstrip, and mountain roads.

Originally Posted by wazari
I have lowered my own XJR and that did increase handling performance without sacrifincing ride quality.
Is your car an X350? If so, how did you manage to lower the car? I do not want to spend thousands on the Arden piggyback system for the suspension....
 
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Old Sep 18, 2009 | 06:18 AM
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ive seen the arden computers on ebay for $600 last week. maybe they are still around.


OP, id personally go with the super v8.
 
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Old Sep 18, 2009 | 11:17 AM
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Originally Posted by patrickw813
<snip>

Is your car an X350? If so, how did you manage to lower the car? I do not want to spend thousands on the Arden piggyback system for the suspension....
Yes an '04 XJR would be a X350.

The procedure is relatively simple but needs to be done at a facility with a WDS and height measuring tools all dealers should have. You go the area in the WDS to calibrate ride height and add the amount you want the car lowered (within reason) to the actual measured height. This will trick the ECM/BCM into thinking the car is sitting too high and will readjust to what it thinks should be factory specs. I lowered my car about 1.25 inches all around. Only 1 hour labor.
 
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Old Sep 18, 2009 | 04:36 PM
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Originally Posted by wazari
Yes an '04 XJR would be a X350.

The procedure is relatively simple but needs to be done at a facility with a WDS and height measuring tools all dealers should have. You go the area in the WDS to calibrate ride height and add the amount you want the car lowered (within reason) to the actual measured height. This will trick the ECM/BCM into thinking the car is sitting too high and will readjust to what it thinks should be factory specs. I lowered my car about 1.25 inches all around. Only 1 hour labor.
Was there a noticeable effect on lowering the car? Any side effects? Wheel rub?

What about installing the XJR anti-roll bars (thicker) in a Super V8?
 
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Old Sep 18, 2009 | 05:05 PM
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I drive an 06 SV8. Not much time behind the wheel of an XJR. Obviously, the SV8 has more rear seat room, which works well when you 16 yo son is 6'8". (2 M or so if you're metric). And SV8 has every option installed (except the dealer installed ones). Same engine, same brakes, suspension in between an XJ and an XJR, but does have CATS. I actually agree that the tires fitted will make the most difference in handling. And its kind of fun to blow most other cars away in a stretch limo.

Can't lose in my mind. Just try'em out and see what fits (especially if you have a very big rear seat passenger).
 
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Old Sep 18, 2009 | 06:02 PM
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I have to ask how are you planning to add a 20210 XF back up camera to a Super 8 or an XJR??? Thet are totally different systems.
 
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Old Sep 18, 2009 | 06:24 PM
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Originally Posted by wazari
Yes an '04 XJR would be a X350.

The procedure is relatively simple but needs to be done at a facility with a WDS and height measuring tools all dealers should have. You go the area in the WDS to calibrate ride height and add the amount you want the car lowered (within reason) to the actual measured height. This will trick the ECM/BCM into thinking the car is sitting too high and will readjust to what it thinks should be factory specs. I lowered my car about 1.25 inches all around. Only 1 hour labor.
Originally Posted by Rich W
Was there a noticeable effect on lowering the car? Any side effects? Wheel rub?
Yes how does the car look and feel? I would assume that the car feels more planted but since the dampening settings are the same, maybe there wasn't a marked difference? Your input would be greatly appreciated!

Would you kindly post some pictures? It would be great to see what a lowered X350 XJR looks like...
 
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Old Sep 19, 2009 | 07:24 PM
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Originally Posted by Rich W
Was there a noticeable effect on lowering the car? Any side effects? Wheel rub?

What about installing the XJR anti-roll bars (thicker) in a Super V8?
No side effects, car feels better in turns. I don't of anyone that makes bars for the X350's
 
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Old Sep 19, 2009 | 11:35 PM
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I think he meant swapping an XJR rsb into the SV8
 
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Old Sep 20, 2009 | 03:12 PM
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Originally Posted by wazari
Yes an '04 XJR would be a X350.

The procedure is relatively simple but needs to be done at a facility with a WDS and height measuring tools all dealers should have. You go the area in the WDS to calibrate ride height and add the amount you want the car lowered (within reason) to the actual measured height. This will trick the ECM/BCM into thinking the car is sitting too high and will readjust to what it thinks should be factory specs. I lowered my car about 1.25 inches all around. Only 1 hour labor.
Wazari, can u post some pics of your car lowered please.
 
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Old Sep 20, 2009 | 04:07 PM
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Not a great picture but only one I had on file. I'll see if I can take some straight side shots later to give a better perspective
 

Last edited by wazari; Sep 22, 2009 at 09:14 AM.
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Old Sep 20, 2009 | 04:44 PM
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damn, i need those wheels.
 
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Old Sep 22, 2009 | 08:11 AM
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Originally Posted by wazari
Not a great picture but only one I had on file. I'll see if I can take some straight side shots later to give a better perspective
Ummm - that pic looks an awful lot like the one Cinci has of his XJR that is listed in the for sale section. Link is here: https://www.jaguarforums.com/forum/s...ad.php?t=22315
 
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Old Sep 22, 2009 | 08:15 AM
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Originally Posted by Charlienmr
I drive an 06 SV8. Not much time behind the wheel of an XJR. Obviously, the SV8 has more rear seat room, which works well when you 16 yo son is 6'8". (2 M or so if you're metric).
Wow! Are you or the misses that tall too? Is he athletic?
 
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Old Sep 22, 2009 | 09:20 AM
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Originally Posted by 57loboy
Ummm - that pic looks an awful lot like the one Cinci has of his XJR that is listed in the for sale section. Link is here: https://www.jaguarforums.com/forum/s...ad.php?t=22315
Yes my teen age son posted someone else picture rather than mine. I apologize, I have no idea why he did that. I do not have any pictures of my car right now but when I get it back from the body shop (rear ended) I will post some pictures. My car is black not gray.
 
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Old Sep 22, 2009 | 03:28 PM
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I'm not that tall (6'1"). My wife isn;t either. However, many members of our families were in the 6'6" range and so my little guy is no eral surprise. Athletic? No. Mostly because he is averse to excessive effort (all formsof work really). Main thing is he didn't fit into the back of my car and so I had a good excuse to trade my 04 SWB XJ8 for the SV8.
 
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Old Sep 23, 2009 | 06:34 AM
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Hi Charlie,

A 16 year old son who's 6'8"? How many refrigerators do you have? My guess is a minimum of two. One for the son and one for the rest of the family.

Mike
 
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