Replacing stock XK8 exhaust manifolds with headers

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Replacing stock XK8 exhaust manifolds with headers

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Jaguar Forum >> Jaguar Models >> XK8 & XKR >> Replacing stock XK8 exhaust manifolds with headers

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Replacing stock XK8 exhaust manifolds with headers - 8/5/2008 12:36:46 PM

EUROWEST_XJS

Posts: 2
Joined: 8/5/2008
Status: offline

Hi,
Does anyone know of any company manufacturing a set of performance exhaust headers to replace the restrictive stock exhaust manifolds used on the Jaguar XK8. The only reference I find when I do a search on the internet, is that Borla company made a set of prototype headers for the car. And also, does anyone know if the stock exhaust headers used on the Aston Martin V8 Vantage will fit the Jaguar XK8 chassis. A picture of these can be seen at;

http://www.motortrend.com/roadtests/exotic/112_0805_2009_aston_martin_v8_vantage_first_drive/photo_08.html

The factory part numbers for these Aston Martin V8 Vantage exhaust headers are 6G33-5G236-BC for the right side and 6G33-5G232-BB for the left side and the factory prices are $1616.49 and $1432.55

I am thinking that because the peak horsepower rating for the XK8 is listed as 290hp at 6150rpm, and the car does not accelerate very strongly past about 5200 rpm in actual driving,even though it will rev to redline with the shifter button in sport mode, I am thinking that the restrictive exhaust manifolds are what are really holding these Jaguar XK8''s back.

I will greatly appreciate any information that anyone has on this topic.

Thankyou,
James Denno

Post #: 1

RE: Replacing stock XK8 exhaust manifolds with headers - 8/17/2008 10:35:51 AM

JGAXKR

Posts: 4
Joined: 3/23/2008
Status: offline

Here is a link to Arden who make headers for the new XK. I have looked minto this for a supercharged car as well, they are not sure if nthey will fit. In speaking with Arden they say the headers are very difficult to fit. I have also looked into the Aston headers as well, the only issue I have is making a flangeto adapt to the Jaguar exhaust.

http://www.arden.de/aade/zubehoer_uebersicht.php?sid=1f533323d34696f50757f6277647365746f62707624323d34696f5c65646f6d6f52716366213d34696f597e61607d6f636f5271636620353634343d34696

(in reply to EUROWEST_XJS)

Post #: 2

RE: Replacing stock XK8 exhaust manifolds with headers - 8/17/2008 7:50:12 PM

h20boy

Posts: 1293
Joined: 3/29/2007
From: Ft Worth, TX
Status: offline

If you''re still looking for a new exhaust system for your car, look over at maxperformancecars.com in the forums, the guy who started that forum designed and manufactured bolt-on exhausts (in three different ''tones'') specifically for our XKs. I''ve heard the videos/audio tracks...very nice. Can''t go wrong there. Just need to contact him for ordering information.

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