I have a series III XJ6, is it possible for the engine to handle a turbo? Has anyone tried it before?

 

Here's a build thread of a turbo xj6. https://www.jaguarforums.com/forum/xj6-xj12-series-i-ii-iii-16/aftermarket-presence-support-series-1-2-3-xj-chassis-42820/page8/

 

Its not very clear on the actual "turboing" part. Like whether there was enough power made for it to be worth the trouble. Or where else it would be wise to upgrade other than the engine. Like trans. or rear diff. gears.

 

You must have just skimmed through it then. He replaced the tranny with a nissan 5 speed iirc, ported oil galley ways And such. Read through it, tells you what hp and tq it makes too. Probably less of a headache to swap a sbc or lsx in and turbo that if you wanted.

 

I'll read it again. And yeah I have a 383 just waiting to go in the car but it wont be a Jaguar anymore. It will have to go in when the 4.6 stops running though.

 

Anything can be turbocharged, its knowing the design of the motor and its inherent weaknesses and working with them or upgrading whats required.


That thread is probably the most in depth I have seen when it comes to a XJ motor being modded.


Oil supply and drain is always an important factor for turbocharging.


As well as control over spark and ignition, the stock setup will be greatly inadequate, a cheap solution would be to run a MegaSquirt ECU, remove the distributor setup and run individual coils, this also removes the standard vane door AFM and allows for a much neater and easier control via a MAP sensor, esp beneficial when running boost, larger injectors will be required and the stock injector setup will probably need replacing with a proper fuel rail to house modern injectors instead of hose tail ones.


Bigger fuel pump setup and looking to see if the stock fuel lines can handle the extra fuel supply demands, probably fittings a surge tank would be a wise idea and the easiest solution.


As for oil and coolant supply to a turbo, theres plenty of coolant hoses you could use, delete the throttle body hoses and route them to the turbo instead, tee fitting on oil pressure fitting for an oil supply, weld a drain fitting into the sump.


You wont find anything off the shelf for these motors suitable, so a custom exhaust manifold will be required, a simple log manifold will give you plenty of room for a turbo and exhaust downpipe.


Still want A/C or not, without it there's even more room for intercooler piping.


Don't forget you are trying to move a 1700kg or heavier car (I don't know exact weights) so there's a lot of load on the transmission and brakes as well, they will need addressing.


Bigger radiator for the motor, big trans oil cooler at an absolute minimum, but I have a feeling the stock auto wont handle anything that's thrown at it. Brakes will need freshening up, I'd say they'll get fade quickly after a bit of spirited driving, fitting good pads, rotors, lines and fluid at a minimum or looking at what options there are for something larger that can dissipate heat better.


Full exhaust system to remove the restrictive standard setup.


That's not even factoring in the actual motor itself, can the pistons and rods handle any boost? will the boost lift the head and blow gaskets, possibly requiring arp headstuds at a higher than factory torque setting.


Can the crank handle the extra torque its now receiving?


What turbo setup do you want? This motor would be great to spool up a large exhaust housing setup at low rpm, limiting RPM on this motor would probably be the safest way to make more power, but great gobs of low down torque play havoc with the rest of the driveline, uni joints, axles, diff strength.


I hope I haven't deterred you in any way, as you can maybe tell, the thought has crossed my mind too.


Other option is to just slap a setup on and see what fails, these motors are a dime a dozen, and just replace it when it dies and maybe upgrade the bit that caused the last failure.

 

One could argue a sbc/ls engine makes the car more Jaguar. It would be consistent with the "Grace, Space and Pace" tag line.


Si William Lyons said...
“The car is the closest thing we will ever create to something that is alive"

Perhaps a SBC or LS, well done, is an evolution. Back it with a TKO 5 speed and now you're really grooving.


The XK engine is one of my all time favorite power plants, it's long stroke makes torque and offers good effiency but by the 80's the XK, like most engines was choked off by simplistic fuel injection and emissions requirement of the era.


The AC Cobra with it's Ford engine is something spectacular.


I've done many SBC conversions and when done right the weight reduction and resulting handling improvements are well worth the effort and consistent with the spirit of the vehicle.

 

If the internals are strong enough and it doesn't blow through head gaskets, which the XK is known to do, then it is possible.

It's the rest of the car I'm worried about. I haven't heard anything about the trans. and from what i've read the SIII, when loaded with lots of torque, has been known to throw the rear end. Which is a 2.88:1 so I would need alot of low end torque or a gear change.

 

Modding to fit the widely used TH400 has been done before, and they can handle a lot of power when beefed up, think there is a kit available for that swap.


As for rear end, there is options out there to handle the power, these rear ends go into hot rods all the time, AC cobra kit cars with 500hp through this rear end. So there is support for upgrades.

 

Stoney85, i never had any luck restoring GIRLS,, LOL

 

In five years, we will see electric motor conversions, that will rival any Jaguar combustion engine swap. The weight of the electric propulsion system will weigh less than the stock combustion version, too. Battery technologies are on fire, right now. Battery packs to power a Tesla motor, will cost around five thousand dollars, instead of thirty thousand, very soon.
The genie is out of the lamp and no one can put it back.....

 

Took me a minute to work out what the hell you were talking about, can't call the old cars guys, because they wouldn't be problematic and the issue would be obvious to rectify and you wouldn't pull your hair out in the process or throw large amounts of money at them hoping to fix the issues.

 

BMW i8

 

Spotted this on facebook. Looks impressive. No details except saying it has a turbo bolted to the i6

https://scontent-lax1-1.xx.fbcdn.net...a3&oe=55F68131