Has anyone attempted to supercharge a 4.0 or am I better off getting a motor from an R or selling my 02 sport and getting an R?

 

Look up the Lincoln LS boards. A guy has supercharged the Lincoln 3.9 and did a great job. He also sells DIY kits. I think it's a lot of work and I purchased an S Type R instead!!!
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Trade it on on an STR if that's what you want... No point in trying really considering the price of STR's these days. It's too much $$ to know or not know if it's going to come out right, be reliable etc. Plus I would NOT put that much power through the crappy ford 555RN Trans.

Just my .02 of a dollar.

George

 

Thanks these are just the opinions Im looking for. Dont get me wrong my sport is fairly quick but Im bored and I think I have out grown it.

It may be time to move up the food chain.

 

Get a STR and have a 4.2 and all the bells and whistles

 

I have started my search

 

good man

 

Do a custom STS turbo set up and be different than all the normal supercharged cars! Thats what i would do if i had your car... but the trans...just change it out for a better one

ststurbo.com, check it out! Any takers?

 

My man, you will go STR! You'll recieve a generous trade amount for your S-Type 4.0 towards an STR, with maybe five grand to close the gap. I recently traded my 02 X-Type with failing trans and transfer case towards a mint 03 STR w/89k. The STR was reduced a grand to $11,900 and they gave me $3000 for my X. I put down $2000, leaving me with only a $7000 note.
The STR will keep your power and style smile going for a long, long time.
Go to AutoTrader.com, etc. and you will see STR's going anywhere from $10,000 (03 w/miles) to $35,000 (2008). The 2003 looks the best in my opinion. Today I met with Phil, owner of Euro Teck Designs. He loved his STR's (03 & 05) and tuned them to 500+ hp. For just $1200 (Stage 1 Kit) he'll tune the ECU while you install his upper pulley for a 40 hp and 80 lb/ft trq gain. The STR is a performance bargain.

 

my 02 is relavtily low miles, (02 with 80K) I cringe at the fact all im finding right now, is 03 STR's with 120k+ on the clock. that means its getting really close to rebuild time.

Im not sure if I want to dump 14K on an STR with that many miles only to rebuild the S/c soon or the motor when I do pulleys, meth, and other goodies.

 

Again the rear mount turbo (STS) has been done on the Lincoln LS also. Everyone who has installed this on a Lincoln LS has removed it. A very interesting idea and allows you to turbocharge cars that have no engine compartment space.

Be careful with EuroTek!! They have many HP and Torque numbers on their website and zero dyno charts for the STR. Not a great way to run a tuning business!! The black box style of tuning is very expensive and not that great. You really need someone who can put the STR on the dyno and tune it there. I can't find ANYBODY who can do this yet??? If you do let me know!!!

Interesting to note is the 3.9L Lincoln LS that has been supercharged and dyno tuned puts down 408 HP at the wheels!! It also runs a documented 12.831 1/4 mile @123 mph!!! Top speed 153 mph. Also the stock transmission has held up for the 2 1/2 years and 14K miles the guy has run this. He also autocrosses the car heavily and does top speed contests. So the car is very well sorted out.

This really shows how much Jaguar detuned the STR. Bigger engine 4.2L .vs. 3.9L. Also the Jaguar has a 6 speed instead of a 5 speed Automatic. Plus the LS is only running a M90 instead of the improved Gen V M112 super charger!!! The LS does have a LSD and the ability to run different rear gear sets and above all the ability to TUNE the combination!!! The STR hold much promise when you look at this!!!

Attached picture of the supercharged LS.
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https://www.jaguarforums.com/forum/a...1&d=1274793052

https://www.jaguarforums.com/forum/a...1&d=1274793052

 

Go for the 06 at TCD right in your backyard.

 

oh man thats a beautiful machine, but eek I dont like care payments. time to save up a few pennies.

didnt the XKR use a blown 4.0?

 

Yes the early cars were 4.0. Then in 2003 and up the engine was 4.2L like what's in our STR's.
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I wonder if I can buy a charger from XKR and transplant it.

Hmm, that might be an interesting project.

 

It would in NO way be worth the trouble, time, or expense to try to convert the n/a engine to a supercharged one. Sorry. Just take your time and keep an eye out for an 03 w/semi-low miles. You'll be glad you did.

 

I'm pretty sure you can find lower mileage STR's? last week one of my patients loved mine so much he went out and bought an 03 STR w/55k for $14k.

 

I have my eyes peeled and looking.

The itch has started.

 

In the mean time, Ive been looking at the motors. and Im wondering how much excatly I would need to swap out. besides the obvious.

Charger, intake manifold, PCM, hoses, belts.

anyone know if its even been attempted?

 

@Mafioso

Posted this some time ago, it might help you in what to think about:

"It might be doable, but don’t expect the same power levels as for the R version.

Here are some of things you need to think about, though I don’t have that much knowledge about a NA car. To stay optimistic you will be lucky if:

-The NA block has supercharger mounts, though someone on this forum had to make his own mounts.
-You can put a significant bigger upper pulley to reduce pressure from the SC, as the engine compression is very high of an NA.
-The coolant hoses that interconnect to the intercooler hoses are the same, so you can swap.
-The intercooler radiator/mountings are the same as on a R so you can re-use
-The engine will start fine without the air assisted fuel injectors, as this should probably be disabled. You might need to use the injectors from a R, but not sure how these will work with the ECU from the NA.
-The single fuel pump will be able to handle the higher pressure/load, don’t forget, the SC itself also consumes power, so the load needed is much more….
-In relation to the above, that you can swap the fuel line from the R with fuel pressure release valve on the return line to keep the fuel pressure constant.
-The ECU will be able to handle more air flow (probably can though).
-The NA tranny you have will be able to handle more torque (and engine internals....)
-You might be able to re-use your original TB, but probably need to check how to (or not to) work with the air assisted fuel injectors.

The intercoolers will probably mount, and you can buy stuff above from a R (i.e. intercooler/hoses) to make things fit. Pulleys etc can be interchanged, and will be easy to connect the SC coolant pump.

Important here is that you will not reach the XKR output, I think you will be lucky if all works out to achieve 40/50 bhp more.

Have probably forgotten some, and hope that the big ones should have been mentioned. Of course this is a big operation, and needless to say probably more expensive than exchange your NA for an R. "

Just 1 thing, changing the ECU is not possible, as then you also need to change the Transmission to match, and more...

imho not worth the effort as it will be more expensive to do this then change cars, and you will not even reach the power of the SC. But on the other hand I have also done a lot, and the enjoyment of reaching something is also something worth ;-).

Good luck!