Powerhouse brought this to my attention: some mad b'stards have decided to revive an XKR 4.2 project that was built by Apex Motorsport on behalf of Jaguar for GT3 racing back in 2008. Unfortunately, it never raced because the team principal died in a plane crash and the company folded. These boys have dug it out and are going to race it in the BritCar club series, as it's not really competitive with 2015 GT3 cars.

Here's the beast on a shakedown run at Silverstone, piloted by none other than Freddie Hunt, son (and spitting image) of the late, great James Hunt:


Don't it sound luvverly?

I've contact the guys, trying to get a bit more info on the car, but despite an initial quick response, I think they've been a bit busy doing the prep & testing.

Their Facebook page is here:

http://www.facebook.com/BringTheCatBack

 

Yeeeeeeeeeeehaw!!!!!!! Bring the cat back!!!!!!

 

I have ported cylinder heads from Apex XKR GT3 car. They were spare ones run just few hours on engine dyno. I will put them into my new street engine. Intensive flow testing for Apex to find best possble flow was made by Mountune. If you stop the video at 0:43 you can see the confirmation that the engine bay looks like orginal Apex GT3 engine including the extra cooling parts.

 

Kick it in the guts Barry!

 

If my car sounded like that I'd throw the stereo away.

 

Very cool thanks for sharing. One of the original cars was up for sale recently, have a look here https://www.jaguarforums.com/forum/m...ing-car-95277/

There is an article about these cars in the latest jaguarmagazine.com print edition, looks like you can only see it online with a subscription, but I have a hard copy here.

There is a spare bodyshell from Apex down here in Australia of all places 2007 Jaguar XKR Coupe body shell | Mike Roddy Motors.

 

I can proudly say that I am already a fan of this team and page. I'm watching them as closely as I can from the middle of the USA.

 

yes!!!!

 

The GT3 4.2 heads:

 

Simon has sent me the full spec:

And if anyone out there would like to contribute some sponsorship, Simon would be very happy to supply a list of funding options...

 

Anyone know if the race at Silverstone will be televised in the US?

 

Perfect Bore 86mm pistons, Carillo rods and steel crankshaft.

 

According to the press release from back in October:

Of course, they're not saying much now, because they want you to buy a ticket...

 

XJR,
What are the specs on the valves? Are they the same as stock? Have you documented any flow numbers on this set?
Any way you could mic the valve head diameters? Or port dimensions? I'm curious what was opted for performance. I'm looking into located a spare set of heads to build myself.

 

The valves are stock ones. I have not flow tested them myself. Stock AJ133 heads: 0.6 at 0.3 L/D which is about 0.17 Alpha K ( said by forum member Count Iblis ) They do not look overported but should flow enough for the GT3 engine. Here pictures of intake and exhaust ports.

 

Oh, just discovered this beast ran in the Blancpain European endurance series last year, and is expect to be back this year:





Website here:

Emil Frey Racing: Emil Frey Racing

 

Yep, more info on the Emil Frey XKR in the Motorsports section of the forum

Motorsports - Jaguar Forums - Jaguar Enthusiasts Forum

 

Here real GT3 heads with all portings and combustion chamber modifications made for FIA GT3 standards. Please ignore pictures above.

 

Like that comment! Just saw this post.

 

I'd like to see Jaguar get seriously into racing again. The C-X75 would make such a great looking race car.