2011-03-16 22:01:30 | pauls writes:

Ebay item 3/16/11
cgi.ebay.com/ebaymotors/SUPERCHARGED-1995-JAGUAR-XJS-BLACK-CONVERTIBLE-XJR-ENG-/ ...
Current bid $8,600, no reserve, 35 bids 3 days left in auction.

Sellers description:
1995 Supercharged Jaguar XJS (Yes, a SUPERCHARGED XJS) Convertible in black color, black top convertible and a beautiful brown leather interior. It has a clean title on my name. The only reason I am selling my car is because I want to buy an Aston Martin DB9.

So, I did what Jaguar should done in 1995 and 1996 with the jaguar XJS models, (Aston Martin cleverly did incorporated on its DB7 flagship model in the same time period) a six-cylinder supercharged version!!!!! Yes indeed, this is the only Jaguar 1995 XJS in America that I know of (and perhaps in the whole world) with an authentic and original Supercharged Jaguar 4.0 six-cylinder engine.

I bought the car with the intension of creating a super car with a unique feature that Jaguar did not offer for the XJS. The car has 86,000 highway miles and is in good mechanical and electrical condition. The supercharge engine has around 50,000 miles on it. The installation of the supercharged engine was done by a professional mechanic and was supervised by myself a year ago. The installation included all the electronics such as the ECU for a Supercharged engine.

This XJS is powered by an Eaton-supercharged 4.0-liter DOHC inline-six, which is the first production Jaguar ever to utilize forced induction. Turning at 2.5 times engine speed, the Eaton M90's positive-displacement supercharger produces up to 10 psi of boost and creates a torque curve as flat as a Yoko Ono Christmas album-but with none of the debilitating long-term side effects.

An output of 322 horsepower at 5000 rpm and a mogul-moving 378 pound-feet of torque at 3050 rpm prove my super-Jag's virility. Compared to its normally aspirated original engine stablemate (245 horses at 4700 rpm and 289 pound-feet at 4000 rpm from the same 4.0 liter basics), the tenor of this supercharged engine is more than a little nasty. Although the displacement of the two Jaguar six-cylinder engines is identical, the supercharged version receives additional internal ribbing to the cylinder head, a tougher head gasket, and a beefier exhaust manifold (all OEM). Both motors utilize cast aluminum pistons, but the Supercharged powerplant chooses slightly revised camshaft profiles and a lower compression ratio (8.5:1 versus 10.0:1) to handle the boost requirements.

An original air-to-water intercooler also is employed and incorporated into the intake manifold. Opening the hood for onlookers is guaranteed to incite an outburst of oohs and aahs, as even the mechanically inept can't overlook the red "XJR6 supercharged" signage or the huge silver, satin-finished cam cover.

The start-up and idle temperament of the Supercharged powerplant is indistinguishable from the smooth-as-Cadbury-chocolate Normal aspirated engine, but merely nudge your big Lord Nelson against the gas pedal, and an instantaneous rush of torque moves the 4215-pound cat in a hurry. Zero-to-60 mph is a 6.6-second thrill ride, while the quarter mile whooshes past in 14.9 seconds at 95.9 mph. Both feats occur about a second quicker than what a 6.0-liter 313-horsepower ($80,000) Jaguar XJS-V12 can muster, despite the king-cat's 50-percent-greater displacement and twice as many cylinders. Amazing what a little hot air can do when blown into the right places.

The XJS are rare. It has been years since I have passed by one on the highway. You just don't see one everyday... In fact, you don't see them hardly at all. If you want a car that speaks to individuality, it would be difficult to do better than this 1995 Black Supercharged XJS Convertible.

These are lovely cars. The interior of this cars is like nothing else on the planet. Old world charm and comfort abound, but in an intimate space, where you are surrounded by soft skins, thick carpeting, and beautiful wood-grains. The interior on this XJS is in very good condition for its age as you can see in the pictures.

Finally, as I stated before, the car has been modified from its original version (normally aspirated to supercharged) and although the car is in very good shape (and runs impressible fast!), it is a 16 year old car

2013-04-10 10:59:53 | Anonymous writes:

Jaguar Sport International in Houston --- a spin off from Tom Walkenshaw racing .... have been doing this conversion for years ... so sorry yours is not the only one .... but it definitely makes a great car even better .....

2018-11-21 01:29:06 | Peter Daisley Worrall writes:

Thank you for posting this terrific story and I am pleased to advise that - TWR cars aside - your project car is about to be joined by my own to make a brace of 6 cylinder supercharged Xj-S Jaguar´s.

I am nearing completion of the project having refurbished an AJ16 s/c engine from a saloon XJR and this, together with a bespoke modern ECU and special exhaust system, is in process of being fitted up to the project car (red, 1988 manual coupe).

I hope to have some ´photos available soon and would be pleased to post them here.

For the TWR cars, were they not V12´s?

Kind regards.

Peter Daisley Worrall