XJ XJ8 / XJR ( X308 ) 1997 - 2003

XJR Exhaust System

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  #21  
Old 05-11-2023, 06:04 AM
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hi there,

Is a sports exhaust fitable for the XJR 4.2l SC X350 also fitable for the X358?

Best wishes
Nic
 
  #22  
Old 05-11-2023, 06:31 AM
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Originally Posted by CH_XKR
hi there,

Is a sports exhaust fitable for the XJR 4.2l SC X350 also fitable for the X358?

Best wishes
Nic
You'd get more useful answers in the subform for those models

https://www.jaguarforums.com/forum/x...-x350-x358-28/
 
  #23  
Old 05-11-2023, 09:32 AM
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I always wonder why so many X350/X358 owners post such questions in this forum.
 
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  #24  
Old 05-11-2023, 11:17 AM
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Randy - they're envious of our X308s. IMHO, the X350 looks like a big Ford Taurus.

Back to the exhaust discussion, I too have the Nameless downpipes with 200 cell cats, currently hooked up to the stock exhaust. I was looking to have a custom exhaust built, but Super Sprint had a sale a few weeks ago, so I went for that; front pipes, x-pipe, then retain the center and rear silencers. It should arrive towards the end of the month or early June. I'll do a thread when the time comes.
 
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Old 05-11-2023, 01:30 PM
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I would be interested in the difference you experience in sound. Performance impact
should be minimal.
 
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  #26  
Old 05-11-2023, 01:47 PM
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I'll make a video of before and after.
 
  #27  
Old 05-11-2023, 07:04 PM
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Originally Posted by RandyS
I always wonder why so many X350/X358 owners post such questions in this forum.
My guess is they don't know the difference between an X350/X358 and an X308... All they know is that they have an XJ Jaguar with a V8 engine and they pick the forum that has the greatest number of posts assuming that will give the largest audience to answer their question.
 
  #28  
Old 05-11-2023, 08:10 PM
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Originally Posted by Ken Cantor
My guess is they don't know the difference between an X350/X358 and an X308... All they know is that they have an XJ Jaguar with a V8 engine and they pick the forum that has the greatest number of posts assuming that will give the largest audience to answer their question.
if a Jaguar owner doesn't even know what Jaguar model (chassis) he owns. Maybe just get a BMW and call it a day.
 
  #29  
Old 05-12-2023, 01:27 PM
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Originally Posted by vonbunn
Just following this blog. I'm going to buy a XJ8 or XJR I hope very soon. I would rather have the more rumble or the more throaty sound myself. Could you give me the no name part your are referring to in your answer? I'm trying to learn which JAG would best suit my wants. I'm a 68 year old new member, and am just taken back by the coupe models. Not the convertibles though. Could you point me in the right direction, year, model, etc. of say spending less than $18,000 on a JAG? I once had a Lincoln in the mid 90s that cost an arm and leg to replace the so called air ride. I'm assuming these JAGs with the cheaper prices have the same system, as they were built by Ford after 1996. Do you know anything about the Arnell conversion from air suspension unites?
I'm thinking the cheaper XJs I see probably have a suspension problem, and that may be why the cheaper cost. Is that probable? How long do the factory air suspensions usually last?

I apologize for the winded questions?
Any help you can len would be appreciated,

Dann
The downpipes we're talking about are made by Nameless Performance; link is to the '00-'02 XKs and XJs. The price has gone up $300 since I got mine. I'm happy with them; the fit is excellent, although you might have to do some minor adjustments on the studs to hit the holes on the exhaust manifold.

If you're a 68-year-old hot rodder, you want an XJR. If you're not a hot rodder, you still want an XJR, and be a DIY'er. If both don't apply, get an XJ8. A good example of either can be had for less than 18k.In this sub forum, we're talking about XJs and XJRs that were built in the '98 through '03 model years. They have traditional suspensions; no air bags. I would look for '00 to '03s.

BTW, I'm a 69-year-old hot rodder and DIYer...
 
  #30  
Old 05-12-2023, 04:19 PM
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Originally Posted by RandyS
I would be interested in the difference you experience in sound. Performance impact
should be minimal.
Kitty less cats or high flow cats net you decent gains on supercharged or turbocharged cars. So on an xjr, worth it.
 
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  #31  
Old 05-13-2023, 09:39 AM
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Originally Posted by Z07Brandon
Kitty less cats or high flow cats net you decent gains on supercharged or turbocharged cars. So on an xjr, worth it.
I put electric exhaust cutouts on my XJR right after the headers, they're low profile and adjustable so you can open them a little or lot get a little sound or a lot and then close them up when you're done and it goes back through the regular exhaust system, I sold the car a few years ago but I still have a thread about the exhaust cutouts with pics on here somewhere
 
  #32  
Old 05-13-2023, 12:40 PM
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Headers!? Are those in the pictures, too? The Jag Wrangler had an article on his website from the 12/2013 issue of Jaguar World Monthly about the Badcat X100. One of the mods was a set of headers that they spent a couple of years developing, and they had a website offering them up until a few months ago.
 
  #33  
Old 05-14-2023, 06:32 AM
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I called them headers, but they're really just the stock headers, nothing newer custom, really cool mod with the electric cutouts!
 
  #34  
Old 05-14-2023, 11:37 AM
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Roger on the headers, and yea, the cutouts look interesting. I mentioned the Badcat headers as I've been looking at them for a few years, and now that I'm fully retired and have a few dollars to spend, I wanted to inquire about them. Tried to go to the website a few weeks ago and it's been taken down. Guess I'm late on that move ... (again)
 
  #35  
Old 05-14-2023, 03:50 PM
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Swallows Racing, I believe, makes a set for the xk 4.0 and 4.2

I would imagine if one pays them their price, they'll make a set for the x308 4.0 cars. I wish Supersprint made longtubes for our cars, but I realize(sadly) most do not mod these cars.
 
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  #36  
Old 05-15-2023, 12:34 PM
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Thanks, Brandon. I went to their website but they don't list any parts, preferring personal communication. Gave them my email address so I should hear from them tomorrow since the time difference from PDT to BST is seven hours this time of year. 10am here is after work pub time there.
 
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