I found a S-Type V6 with a manual transmition. I have a 4.0 sport and want to convert it to a manual gear box. I can't find anything about this anywhere. Has anyone seen it done? Can I modify the trans from the V6 to work for the V8? I want to do this so bad. I also understand it will not be cheep. I was told by my mechanic that it will through all sorts of codes. How if that is the case would I over come that?

Help me Oh wise ones!

 

Of course it CAN be done - worst case you change the PCM and lots more - but it may be VERY VERY expensive. Say it was $50,000. Maybe you don't want to spend that. What's your budget?

 

It is definatly not that much. I was thinking. 10,000-15,000. I'm hoping less. I'm just not sure what I can get sponcored. So I might need to have some of that left over to make my carbon fiber body kit. What are my options? Can I use parts from the V6?

 

PARTS YES, BUT LOOK AT THE TRANS FROM A TOYOTA SUPRA. THEYRE SUPER STRONG AND ALSO LOOK AT ASTON MARTINS SINCE THEYRE INBRED JAGS WITH MANUALS AND ALOT OF PERFORMANCE STUFF. i WOULD ALSO CONTACT THE PERFORMANCE COMPANIES IN THE UK AND MAYBE BE DIRECTED TO THOSE IN THE BEEN THERE DONE THAT CATAGORY LIKE AVOS, OR THE OTHER GUY(SCREEN NAME ESCAPES ME) THAT BUILDS THE XF TAILIGHTED XK'S AND OTHER MODDED AND PERFORMANCE JAGS

 

The car's PCM also controls the autobox so either you find a way to pretend that's still fitted (mimic its pressure sensors etc) or you change PCM. Doing that means the anti-theft etc won't be happy so you likely have to change most other modules. Go see the thread from the guy putting an LS1 into the same body your car has.......

My advice: forget it. Not viable. Buy a different car.

 

Or go the LS1 / 6speed manual route.... But, yea, real $$$$$$$$$$...

 

I was hoping he'd read that thread and decide NOT to.......

 

Is there a link? How do I find the thread for the LS1 going into a S-Type?
Sorry kind of new to this.

 

Does the S-type R run the same exact trans as what I have now or is it beefed up?

 

Completely different. ZF not Ford. Has a computer and all the time talks to the PCM, whereas yours doesn't. Give up now.

 

I think I've given up on the manual conversion. Now I'm trying to find ways to beef up my trans to accomidate the power if I turbo charge. Any thoughts????

 

Er...... just buy an STR or a different car

(How much more compression do you think the 4.0 can cope with that jag couldn't manage....)

 

OMG I friggen love you jagv8. I'm dying over hear, I just spit soda on my desk reading you posts to this... idea. Ah, I needed that today. Thx Boss!

To the OP, what he said.

 

Well, instead of turbo charging the 4.0...Just search for a used drivetrain from an XJR (pre-2004). Those had supercharged 4.0's in them. They should be real easy to find..and will have the lower compression that you need to successfully install a good forced induction (but I'm sure you already know all about that...why people that supercharge, say, Hemi V8's usually do heads as well...)... And those cars run the Ford 5-speed auto as well. Don't know how hard it would be to adapt all the electronics even though they are from the same brand.

Also, here is the link... Sorry we said LS1, it is actually an LS3... umm, and still not done...

https://www.jaguarforums.com/forum/s...-engine-33719/

 

Thanks JOsworth. I'll look into it. I'm glad someone here is interested in the quest for more power. Keep in touch

 

Heck, I'm not trying to put anyone off more power! But there are more doable and cheaper ways than some of the tough ones. LS3, sorry, yes.

Sorry about the soda!!

 

Please tell me then what you would do top to bottom to get reliable power out of this thing. What would your list look like?

 

To be brutally honest.... Get a different car....One that has aftermarket support for muscle builds.. If rear drive sedan is the choice....

Domestic:

Pontiac G8
Chrysler LX (300, Charger, Magnum)
Ford Panther Platform (Crown Victoria, Gran Marquis, Town Car)

The above will be lower cost builds vs the Euro cars below:

Foreign:

Mercedes AMG cars
BMW M cars

If you messed with one of the above Euro's you will run into costs and barriers like you do with Jaguars. The thing is, there is a larger aftermarket for the likes of Mercedes and BMW..

So, really, the question is....How deep are your pockets...

Another spin: If you really want to, I'm sure with some electronic work, either the supercharged 4.0 out of an earlier XJR or the more modern 4.2 supercharged out of the S Type R could be made to work. But these conversions will be costly. It would be like transplanting the 385hp 5.0 out of the XF into an S Type. Despite the similarities they don't just bolt in. Many things need to be changed and all the little stuff will drive you nuts.. Like getting all the modules to talk to each other since they are all networked together.

See, the days of just swapping in a different engine and making it fit are gone. Hey, even supported stuff has its issues. An example of this is in the new 2011 Hemi cars from Chrysler; they fitted an encrypted PCM basically locking out the aftermarket tuner guys. It is causing quite a stir in other forums right now..

 

The saying that applies: I wouldn't start from here. It's very much the wrong car to start from unless you have tons of money and are happy to blow it.

 

I don't know where the law is now over there but at one point it was suggested (or stated) that all PCM software changes would/should be prevented (stopped/etc) - except for those provided by the maker - in an attempt to prevent emissions. Further, that the actual PCM software version (called a "calibration") would be checked during I/M and vehicle failed if incorrect or any tampering found.

Obviously if that happens / happened it would prevent all tuning via the PCM.

There would be a start year and it would only apply to vehicles of that and later years, I believe.

I guess this would be EPA (and/or CARB). May be worth hunting to see whether this is what's happened.