Give It A Go - Jaguar XJS

In reply to pres589 (djronnebaum) :

I do know the wheel bolt pattern changed after the XJS.  I also know some BMW wheels work and fit.  

frenchyd said:

yupididit said:

In reply to 03Panther :

I think he left out the year range

From 1962 - 1997 ( that I know of).  I haven't followed anything newer. 

What are the outboard years? 

In reply to yupididit :

1991-1997. 

If it's only a street car, why not stick with the stock inboard brakes?  Are the parts impossible to get or something?

They are difficult to work on in the car. But it takes about 45 minutes to pull the whole rear end out. ( if you know what you're doing and it's not badly rusted. ) once out it's extremely easy and straight forward to work on The nice thing is you need to work on the rear brakes about every 20 years( unless you race the car ) 

  Outboard brakes actually are a step backwards  but important for racing. 

frenchyd said:

In reply to 03Panther :

All XJS are supposed to have positraction 6 cylinder or 12.  Post restyle the brakes are outboard. 
     The sedans it's hit and miss. Some have it some don't. Most of the ones that have it will be 12 cylinders.  But I've found many exceptions over the years. 
     The check is Jack it up by the center and spin one wheel. If the other turns the same way that's positraction if it turns the opposite it's not. 

Then I still am missing something about your post. You told him he has to get  a XJS rear to get posi. But unless I'm really confused, he does have an XJS... We all understand what you are saying, just not why?

03Panther said:

frenchyd said:

In reply to 03Panther :

All XJS are supposed to have positraction 6 cylinder or 12.  Post restyle the brakes are outboard. 
     The sedans it's hit and miss. Some have it some don't. Most of the ones that have it will be 12 cylinders.  But I've found many exceptions over the years. 
     The check is Jack it up by the center and spin one wheel. If the other turns the same way that's positraction if it turns the opposite it's not. 

Then I still am missing something about your post. You told him he has to get  a XJS rear to get posi. But unless I'm really confused, he does have an XJS... We all understand what you are saying, just not why?

If you carefully read his earlier post he wanted to update the rear end to get outboard brakes.  And possibly ( my assumption ) to get the 3:54-1 ratio instead of the 2:88-1 ratio he currently  has. He should have posi now but if he wants to make sure he gets posi he should select a XJS as the source. Sedans are hit and miss.  Yes they interchange. The XJS is built on a sedan chassis. 
     He said the only competition event planned was the Texas mile ( a top speed event). I suggested he keep the 2:88-1 ratio for that. 

This thread is bad bad bad for me. Now I want an XJS challenge car. Frenchy, perhaps we should team up. 

Regardless, I 'thought' that the jag rear was a Dana 44 and therefore the ring and pinion sets in basically any gear you want are relatively easy to source. The carrier and the IRS is certainly jag specific (not stick axle), but the RnP sets swap back and forth, no?

Also, now I'm scheming posi swaps for my 87 sedan...

In reply to Robbie (Forum Supporter) :

I was about to ask that same question. 

Finally got home yesterday and unloaded the XJS.

It needs a little bit of work but I like it. Will get interior pics later. 

I need to check it for any rust that's more than surface. If it's too rusty, I'm going to take what I want from it (mainly the bumpers and interior)  and find a Texas shell. 

Oh and it runs. Need to find a radiator and fix the shift linkage before I drive it. 

yupididit said:

 

So the valve covers are under there somewhere?

Stampie (FS) said:

yupididit said:

 

 

So the valve covers are under there somewhere?

It's tight in there

But much more room with a LS

In reply to yupididit :

But normally nothing you need to get to on the sides. Like a Chevy's spark plugs.  Jaguar has them right on top.  
      If you dispose of the luxury stuff or just replace it with modern compact stuff  you'd be shocked at how much room there is.  
Look at pictures of Group 44's XJS's  engine compartment. They  had room to fit 27 feet of tubing in that compartment once they removed that stuff. 
If you really want a modern engine try the Jaguar V8. Same or more power than an LS and it looks lost in that compartment.  But maybe you'll look at the F type for a small fraction of what a swap will cost.  

In reply to frenchyd :

I have an XJR with a Jag v8. No thanks. The other high powered jag v8's are supercharged or excessively pricy to which you can get an equally powered LS for less lol

F-type R is a 60k car, small fraction my ass. I'll buy one one-day though. 

I'm swapping a Chevy engine in. No need to try and convince me otherwise. 

In reply to frenchyd :

Come on now.  Don't make me start quoting Z06 hp numbers.

There's at least 5 threads littered with v12 vs LS. Let's not let this be one. 

That body kit is serious RADwood material! This Jag is Rad! Do you think the paint can be brought back? 

In reply to yupididit :

I was suggesting a different V8. But it's your thread. 

maschinenbau (I live here) said:

That body kit is serious RADwood material! This Jag is Rad! Do you think the paint can be brought back? 

I'm going to have it repainted if it isn't too rusty. The bodykit the main reason I bought it lol

In reply to yupididit :

You'll find a lot of Jaguars can be "saved" with careful sanding and buffing. Many of that period were paint twice even three times at the factory. 

throttle bodied v12 noises

That paint has wear-through spots in the top coat so "careful sanding and buffing" seems out the window from the jump.  I suggest painting the car cocaine white and black out most of the trim as just one of many good options.

I'd be great if you can stay with the V12. All the bits and pieces included.

In reply to FMB42 :

Nah