Has anyone added a supercharger to the regular 5.0 engine...?

 

Jaguar did it so it must be possible. Different ECU? Different intake of course. Different air box(es), probably a different Throttle Body also. Probably be cheaper, and definitely easier, to sell the N/A and buy the S/C.

 

Yep I've got one and it's called an XKR

 

The cost to do it right is going to be far more than selling the 2012 XK and then buying a 2012XKR.

Otherwise you'll be limited to perhaps 3lb's of boost at most.

 

Ditto, find a totaled XKR and do an drive train swap.

 

Firstly you would need to drop the compression ratio either with new pistons or de compression plates and by the time you did that you would be more effective using turbo's instead of supercharger.

Not to worry if your serious about gaining more power a proven method on the n/a is 100/200 cell cats, x pipe, colder plugs and a performance tune (old jaguar performance)

I have no doubt with the above modifications you'll pick up about a 10% gain in hp/tq and shave over .5 sec on your e.t

 

Consider that the OEM bought these parts in a much larger batch than an aftermarket manufacturer will supply, that means a discount.

Then figure those OEM parts have depreciated with the car, that means a huge discount if sell what you have and buy a XKR.

Then figure the labor to tear down an engine and rebuild, vs one already built from the factory.

Unless you are looking to spend $40K+ on a forged balanced custom built for your car and super tuned engine, there is no point to super charging when you can get an already factory supercharged car by selling what you have and buying the other.

 

The XKRs have a different transmission also right?

 

The NA and SC cars have different part numbers for the transmissions for both the 4.2 and 5.0 cars. I am not sure how significant/different that is though.

The SC 4.0 X100s used a Mercedes transmission and the NA cars used the ZF transmission because the ZF would not handle the power. (They were barely adequate for the NA cars.) I would like to know if the X150 SC transmissions are more robust than the NA transmissions.

 

That's what I heard. The N/A transmissions could not handle the SC engine load requirements. I think it might have been mentioned in that How it's Made XK video.... I could be wrong.

 

Same gearbox different torque converter
N/A - 600nm limit
S/C - 650nm limit

 

So again I say.... sell the XK, buy an XKR.

 

+1

 

+1

 

+1

unless you have very deep pockets and love a huge challenge plus don't mind if you destroy things.

 

Man, you guys are a bunch of downers. Look, most of the parts all laid out for ya, right here.

5.0L V8 Supercharger & Intake Manifold Conversion Kit OEM off a Jaguar F-Type | eBay

All you have to do is put them in your car. It's that easy! I mean, it took me under a minute to make this post, so how hard can it be?

 

You will ask the same question while scraping the remains of a burnt valve from a hole it made on the way out after you grenade your engine. However, the answer will be drastically different.

 

It would be interesting to see how a high compression engine would act with the introduction of a supercharger. I agree, probably a "KABLOOIE" of some sort. Plus there is still the problem of the wrong ECU. Can't just swap those out for different either for a couple reasons... probably wouldn't 'take' to the new car without some mods, plus emission inspections would probably be a FAIL cuz the ECU VIN doesn't match the car.

 

It was humor mate.

 

What actually kills the engine in such situation is detonation caused by overheating due to lean out. It doesn't help understanding that it is colloquially called overboost. Any internal combustion engine can withstand high level compression, well beyond what supercharger could produce.

For example, AJ133 5.0 V8 engine has 27PSI of boost, while typical engine cylinder compression is about 150PSI.

For XK150, NA 5.0 engine is 11.5:1 while SC 5.0 engine is 9.5:1. That alone, without other modifications, would prevent supercharger swap. Compression ratio defines BDC to TDC, or how much piston moves and how much it would compress air during compression cycle.

So what would happen if you were to bolt on supercharger from R to a naturally aspirated variant? It would still produce the same level of boost, but this air will be compressed a great deal more due to 11.5:1 ratio. This will create A LOT more heat and would require A LOT more fuel. You will likely won't be able to put enough fuel in making heat situation even worse. So the outcome is melting, detonation and catastrophic damage to the engine.

Now I am not sure how would direct-injection engine would cope with over boost, I imagine the high pressure pump would have equally difficult time supplying fuel in excess of designed capacity as any other fuel system. On the off-chance it can cope, and you don't end up with a lean out condition you will still have issues of excessive heat - this usually manifests in supercharger failure and/or burned exhaust valves.