XJ ( X351 ) 2009 - 2019

Thermo getting bored, got a motor mod in mind

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  #21  
Old 08-15-2015, 08:39 AM
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retriever, if I am looking at a "toy", I am contemplating a new Polaris Slingshot. I think that would be a fun vehicle to have and to play with. Otherwise, I am going with a 1970 Dodge Charger, but that is going to get a supercharged V10 put under the hood. Boys and their toys. I like having the things that may appear normal on the outside, but once you get past the outer layer, you realize that there is something a little different on the inside.
 
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Old 08-15-2015, 10:41 AM
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Originally Posted by Thermo
tbird6, I am curious why the motors do not have interchangeable parts. When I was in London talking with the Jaguar engineers, they were saying that the new 5.0L Jaguar engines are made in the same factory as the Ford 5.0L engines and what happens is there is a room in the back of the factory where the Jaguar specialist comes out and gets to hand pick the blocks and heads that he wants and then those parts go into the Jaguar room and the motors are then built there. I will admit that there are a few Jaguar specific pieces (ie, dual intake setup vs single intake for the Mustang, etc), but I think we will find that 99% of the parts are going to be identical. Hence why I am looking at some potential upgrades.
Doesn't make sense, the blocks look totally different
Jaguar 5.0
Thermo getting bored, got a motor mod in mind-2l92qur.jpg
Ford 5.0
Thermo getting bored, got a motor mod in mind-ford-351-005.jpg
 
  #23  
Old 08-15-2015, 11:05 AM
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Originally Posted by amcdonal86
What on earth does the Jaguar AJ133 have to do with the Ford Mustang? Or any Ford product for that matter?
My understanding is the engine is built at a Ford engine plant in Brigend .... but other than that nothing.

That plant does not make Coyote motors. It makes Ford ecoboost 4 and inline 6 engines, and of course Jag engines. It would be foolish to make the Coyote in the UK as well as the Windsor plant in Canada considering all the cars that use it are manufactured in North America. They would have to pay for shipping back to Canada or the U.S. on every motor.
 

Last edited by auburn2; 08-15-2015 at 11:25 AM.
  #24  
Old 08-15-2015, 11:08 AM
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Originally Posted by Thermo
tbird6, I am curious why the motors do not have interchangeable parts. When I was in London talking with the Jaguar engineers, they were saying that the new 5.0L Jaguar engines are made in the same factory as the Ford 5.0L engines and what happens is there is a room in the back of the factory where the Jaguar specialist comes out and gets to hand pick the blocks and heads that he wants and then those parts go into the Jaguar room and the motors are then built there. I will admit that there are a few Jaguar specific pieces (ie, dual intake setup vs single intake for the Mustang, etc), but I think we will find that 99% of the parts are going to be identical. Hence why I am looking at some potential upgrades.
Chris,

There is some misunderstanding. The Jag engine and the Ford engine share virtually nothing in common. They are two completely different engine designs as can be seen in Avo's post. Aside from (maybe) some nuts and bolts, I'd be surprised to learn that any components are interchangeable.

It is true that the Jags tech do hand-select the components for each engine, but it would be fitting (for example) the best suited unique-to-Jag piston for each of the cylinders of the Jag-only engine block. I'm sure the spokesperson didn't mean that the Jag techs were sifting amongst Ford Coyote pistons for a Jag engine.
 
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Old 08-15-2015, 11:23 AM
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Originally Posted by Mikey
Chris,

It is true that the Jags tech do hand-select the components for each engine, but it would be fitting (for example) the best suited unique-to-Jag piston for each of the cylinders of the Jag-only engine block.
This sounds accurate. I don't know about Jaguar specifically but this is commonplace in engine assembly especially with pistons and blocks. You manufacture the block and pistons to a certain tolerance, by making that tolerance less stringent you can save a lot of money in manufacturing so what companies do is they lower the tolerance on individual components and then select the correct fit from the pool that is delivered.

For example if you want a 0.0035 +/- .001" piston to bore clearance you could specify a 0.0005" tolerance on both the piston and the bore and you would be garunteed to get this on every set. But if you are on an assembly line building 1000s of engines you can save a lot of money by specifying a larger .001" tolerance on the bore and pistons and then matching up the "big" pistons with the "big" bores and the "small" pistons with the "small" bores after they come into your assembly shop.

I am working in inches here but it is the same idea in mms.
 

Last edited by auburn2; 08-15-2015 at 11:28 AM.
  #26  
Old 08-15-2015, 01:54 PM
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Maybe they are different, this is the sort of information that I like. I just find it interesting that my engine has Ford stamped all over it. I would think that if the assembly plant was set up like Auburn2 says, then the parts would not be stickered until the very end and therefore get Jaguar stickers.

I guess I need to do some more surfing of the net and see what I can find. It would be interesting to see what all parts are interchangeable. Everything I am finding simply says that they "use the same architecture" (whatever that may truely mean between the similarities of the jaguar and Ford 5.0L engine).

I do have a friend that is beefing up his Mustang that has the 5.0L engine in it. Maybe I can talk with him and see what he is doing with his old parts and see just how different these engines might be. While I know there are lots of people that say the car is great as it is, there are others of us that are looking to see if we can make it better. Would be nice to know what the options/limitations are.
 
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Old 08-15-2015, 02:21 PM
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Certainly the Coyote and the AJ 5.0 d not use the same architecture ... unless you use that term very loosely. They are both 90-degree V8s with overhead cams and I suppose you could call that an "architecture" but if that is the case every modern gas V8 in the world except the Chevy engines share the same "architecture".

The Coyote is a derivative of the Ford modular V8 and I have done quite a bit of work on the modular engines. I am more familiar with those than I am with the Jag V8 but even through casual external view you can easily tell the two engines are completely different.

As for the Ford stickers, it is certainly built in a Ford plant currently. Now Jaguar (and to lessor extent some Jaguar owners) are specific that this is a "plant-in a plant" and that it is "Jaguar people" not Ford that is building the engines. I think a lot of that is semantics for the purpose of maintaining the aura of exclusivity. Ford darn sure isn't letting Jaguar build engines in their plant for free, so either they are leasing plant space or there is some kind of joint production arrangement between Ford and Jaguar. I would tend to think it is the latter as that would simplify the logistics and supply chain.

I will also add that while there are very few (if any) common parts between the Coyote and the AJ series engines there are many similarities and common parts between the Jaguar AJ engines and the mid 2000s Lincoln/Thunderbird AJ V-8s that were built in Ford's Lima Ohio engine plant. So Ford has produced V8 engines similar to this before for their own cars, the Coyote just isn't one of them..
 

Last edited by auburn2; 08-15-2015 at 02:34 PM.
  #28  
Old 08-15-2015, 03:09 PM
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The AJ V8's were a Jaguar design built by Ford AFAIK and slightly modified for the Lincoln and Thunderbird.
I did some googling for the 5.0 but it's hard to find anything definitive, you would imagine there would be some commonality if they are built in the same plant, did the design predate TATA?
 
  #29  
Old 08-15-2015, 05:48 PM
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True they are assembled in the same plant but they were designed by two different groups at two different companies a bunch of time zones apart.

I happen to own a 4.6L DOHC modular Ford engine which is the grandfather of the 5.0L coyote. When comparing it to the 4.2L in my S-type, grandfather of the Jag 5.0, it's hard to believe they have any corporate parentage at all.
 
  #30  
Old 08-16-2015, 12:37 AM
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Originally Posted by Mikey
True they are assembled in the same plant but they were designed by two different groups at two different companies a bunch of time zones apart.
I don't think any of the AJ V8s (3.9, 4.0, 4.2 or 5.0) and the Ford Modular V8s (4.6, 5.4 and 5.0 Coyote) have ever been built in the same plant.

The Ford modular V8s are all built in Romeo Michigan plant and the Windsor Ontario plant. With the Coyote specifically only being built in Windsor. In the 90s there were some Aluminum block castings made in Italy but these were still shipped to the Windsor plant for assembly.

I think the AJ V8s have all been built in either the Brigend UK plant and previously in the Lima Ohio plant for the T-bird and Lincoln.

What may be confusing people is there are other Jaguar/LR engines which are not only Ford sourced but are "mainstream" Ford engines. Those include the 2.0L petrol 4 cylinder turbo (AKA Ford Ecoboost) and the V6 through about 2011 (AKA Ford Duratec).
 

Last edited by auburn2; 08-16-2015 at 01:02 AM.
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  #31  
Old 08-19-2015, 09:07 AM
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I don't know who put the idea in your mind that the AJ-V8 series of Jaguar engines are related to Ford engines. Specifically the Coyote engine. The AJ-133 was developed based on the AJ-V8 product completely independent from Ford. Here is an interesting link with information on the AJ-V8 engines.

Jaguar AJ-V8 engine | Project Gutenberg Self-Publishing - eBooks | Read eBooks online
 
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Old 03-06-2024, 03:45 AM
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Originally Posted by Thermo
Stuart, the start/stop system in the XJ is one of the reasons that I went with a 2012. I experienced it first hand while in London. I found it very unnerving and slightly irritating. People have asked and from what I have been told, it cannot be disabled permanently. You have to disable it every time that you start the car. If I could get the 8 speed tranny and not get the start/stop feature, I would be in heaven. BUt, that is not to be.

.
Old thread I know, but Chris mine is an 8 speed tranny and does not have the start / stop as we have discussed - only one battery and yet 2013. All because, I believe, it came from Asia...

I too am looking at the possibility of a modification to add torque. In my situation I would love the V8 but that is not even remotely possible currently.

What do you good folks think of this: - it is German and claims 20% increase in torque nd better mpg. I have not done much research at all yet and I don't know if this is available on the non diesel V6. But it's a starting point... I don't want to change the overall character of the car but just some more low down torque to waft more effortlessly if possible.
https://www.micro-chiptuning.com/en/
https://www.micro-chiptuning.com/en/...2kw-275hp.html
 
  #33  
Old 03-07-2024, 01:38 PM
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QP7, two issues I will bring up. It is my understanding that you have the supercharged V6 engine which is a petrol/gas engine. The tuner you list (both links) are for a diesel engine. Apples and Volvos different. Your links will not work on your car. really, what that "tuner" most likely is is nothing more than a mass air flow sensor "adjuster" that makes the motor think it is getting more air than it really is and it gives it more fuel in certain circumstances. More fuel is more power. A basic law when it comes to engines is that you can't get more mileage and more power out of the engine without improving the efficiency of the engine internals. Now, this assumes you are not skimping on something (ie, running the engine a little lean to get a little more mileage for example). Fuel has a finite amount of energy to it. So, to make more power, you have to use more fuel. To save fuel, you have to use less. Yes, computers play a big roll in todays engines and maximizing what you get out of the engine. But, they are just finding the places where the motor was not running efficiently and adjusting the characteristics a little bit to get that last little bit out. But, the manufacturers have figured out anything of significance. Is there a little more to gain, I'm sure there is, but we are talking 1 or 2 percent, not 20 plus percent like your add claims. If there was that much out there to gain, the manufacturers would have swooped in on that with the tightening emissions and mileage standards.

With this being said, a lot of people here are swearing by the VelocityAP tuners. The company stands behind their products and will create something specific to your car, not some generic 1 thing fits all. If you want some more out of the car, that is who I would go with. There are links all over the place in the forums to VelocityAP.
 
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  #34  
Old 03-07-2024, 03:48 PM
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Thank you very much, that is very helpful, Thermo... - and much appreciated.

Thank you again...
 
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