what the heck you talkin about???????

that car has twin turbochargers and an intercooler up front= lots of power.

also if you havent noticed ,,its RIGHT HAND DRIVE.

comon guy,where in WV you at the sanitarium!?

 

M90power - holy hell!! I understand if you don't want to divulge too much information in case somebody swoops in on your sale, but you HAVE to tell us a bit more about this twin turbo XJS!!!

How much fabrication work? Internal engine components changed? HP & torque figures? Clean up those weld seams, put a finishing plate over the middle of the Vee, make a reasonably priced kit, and PROFIT....

Man that looks hot.

 

thats not a pic of the one im buying. its just a pic that i was using as a reference. and ron, i can CLEARLY see that its an intercooled TT.

 

Fair enough, what's the story on that one then? Got any more pics?

 

just one from the opposite side. Warrjon is the OP for those pics, ask him.

 

The intakes are cast aluminum, and there wouldn't be enough room between them and the hood to mount a carb. As it is there is very little room between the engine and the hood. Besides, if you're going to put turbos on, you'd have to run an elbow from the turbo to the top of the carb and that would raise it even higher.

If it were me, and I had it in my mind to have turbos with carbs, I'd make an intake so they would sit inside the V. Perhaps 12 single barrels. But personally I'd stick with the fuel injection and pipe the turbos through the existing intakes.

 

Coming in very late here.....and I know the topc is "twin turbo" not "twin supercharger" but, still, I thought this might be interesting to some:


Lyon's Tales -- The On Line Virgina Jaguar Club Newsletter - Page 5


As I recall the owner/builder of this car, Bradley Smtih, spent about ** $50,000 ** on this engine set-up.

Smith passed away a few years ago. Not sure what happened to the car. It was on Ebay as recently as 3-4 years ago.

Cheers
DD

 

how would you run turbos through 12 single barrels? :O
if the ignition timing is distributor adjustable then i could run a dual carb setup, and i could switch back and forth from E85, 100+ octane, etc. somewhat easily.

 

HAHA, thats a good one, change ignition timing and run E85 or race fuel, and all else stays the same!!
??

 

Lots of good read here, but let me ask you. Do you want a fast dd on limited $$$$(best bang for the buck) are you dead set on all jaguar?
If i was looking to do all jag and tt i would yes build the engine. Cp, ross pistons will do custom 1 off's all day. I had cp do a cyl set a few years and pahter billet rods and that set me back $2000 with pins and rings included for a 6 cyl. So expect $4k and 3 months wait. That doesnt include anything else for the project. Then i would think about the sts universal kit rear tt kit. Warrjon is correct, there is not enough room to plumb underneath. I would gut the interior, build a new trunk floor higher to mount the turbos, have plenty of room. And snake charge tube into the interior through a false floor and out the sides in front of the tires into fabbed rocker panels up to the front. Now you can either run air to air cooler in front or in the remainder of the unused trunk build a water to air coolers and tank with pumps self contained. Pics you choice of manually trans as anything a cnc machine can make adapters. Its afterall only money.
On the cheap i would work over a na motor with better air flow through the motor first, then a stroker/bore later.
A cheaper and very fast route. I would swap in a turbo buick engine trans from a grand national. Bolt ons without engine work make this a very fast turbo car. Power steering and ac are all a few custom hose changes. The weight reduction and setback would benefit handling, weight transfere, braking and fuel economy. Plus ive seen these combos with not outrageouse boost, cams etc knock down over 30 mpg's. All kinds of performance parts cheap for this setup including basically same parts needed to swap a small block chevy into the same jag, and the engine compartment would swallow the engine and turbo. you might even be able to stand in the bay with the motor in and work on it........it has been done before too....and would be alot less money.....just a couple thoughts

 

To run a turbo across 12 carbs you'd have to have a manifold type tube across the top of them.
I don't think you'd have enough adjustment in the distributor (which is adjustable) to make up for those different fuels. At least not with the HE.

 

M90, call me when its all together and running nice.

we can take cruise on a hot texas day.

 

well obviously youd tune the carb to get your AFR back, then advance the timing some. dont really see what im missing here.

im planning on replumming the fuel system anyways.

how is that cheaper? GN's in my town are a rare breed and very$$$$$$$$$expensive$.

 

ive got my heart set on an XJS. but the drivetrain isnt important to me. i would really like to be able to build up a V12, just for the bragging rights of it being a V12. i really just wanted to see how feasable it would be. maybe if i pulled the heads, put in some Flathead pistons, fabricated some carb'd manifolds, and went TT.

however, i do have a Buick 455" V8 sitting in my shed that ive been saving for something special. its got some low compression pistons in it and its perfect for a boosted setup. but then again, its a dinosaur so turbo would be my cheepest option. its definately not as long as a V12.
im wondering if the Oil pan would get in the way of the front subframe.

 

Nitrous oxide Jaguar XJS - Top Gear - BBC - YouTube

 

HAHA, i watch that video literally 5 times a week.
i just hate spray.

 

well maybe you should look outside the WV area. My neighbor at the end of the street has a very clean 1 for sale for $10k. I work with a Land Rover tech that just got a Ttype(same thing) with a built engine, bigger turbos, and suspension and other work done on it. Its a 10 second street car with ac, and he just about stole it for 5k. Or you can have Kenny Duttweiller or many other Buick guys sells a complete engine with electronics tuned and ready to drop in without looking for a car and back it up with either a Manuall or 4L80E or R200. I spent $20k on the 580cid in my El Camino 12 years ago thats in my avatar. Thats why I asked your budget.

 

my budget isnt too good. i can afford to spend a couple grand a month on it.
ive got a T400 with a shift kit, that i used to run on my 455. it was great in my old Abody. i dont know how well it would do in an XJS. im not entirely sure its the same trans. i know the Jag uses a T400 but the bellhousing is totally different, (which im pretty sure its not a removable bellhousing) and as far as i know, its got a much lower ratio, making the car slugish from a dig.

 

TH400 in the Jag is exactly the same internally including gear ratios. The bell house is different than both the Chev or BOP - so would require an adapter to bolt up to a Chev - it not removable.

If you are looking for cheap HP the V12 is certainly not the engine to be utilising. An L67 or 36 (basically the same engine as the GN) would make 600hp for the same cost as building a 450hp Jag V12.

There is a car similar to my daily in Perth that has a turbo L67 with bolt on mods only making 440RWHP in an auto. MUCH cheaper than building a V12.
Forced Induction Technologies - Australia's V6 Supercharged Specialists

If as you say you want a V12 for bragging rights then going down the tried and tested route is the only option unless you have a huge budget for R&D.

Initially Should be good for 350-380hp and cost under a grand
MegaSquirt ECU
dual Ford EDIS or GM Delco ignition
Exhaust and intake

Once you get bored with this then extra cubes are in order bore and stroke up to 7L

A carb setup like you are proposing would require manifolds like these and a hole cut in the bonnet for them to poke through.

 

THE BELL HOUSING IS REMOVEABLE WITH A SAWSALL AND MANY ADAPTERS AND SCATTERPROOF BELL HOUSINGS ARE MADE TO FIT A
T400 BEHIND MANY DIFFERANT ENGINES. THIS IS WHAT I USE IN MY 8SEC RACECAR BEHIND THE 850HP(PLUS 400SHOT)
580. YOU CUT OFF THE FACTORY BELLHOUSING AND BOLT THE JW SCATTERPROOF BELLHOUSING TO THE FRONT PUMP WITH LONGER INCLUDED BOLTS. THIS IS A REQUIREMENT FOR 9SEC AND FASTER CARS. THIS LETS YOU BLT JUST ABOUT ANYTHING TO A T400. AND YES THEN YOU COULD USE A GEARVENDORS OVERDRIVE UNIT BOLTED TO THE BACK FOR A 7 SPEED AUTO WITH GEAR SPLITS
J.W. Performance Ultra-Bell Bellhousings - JEGS