Just out on I Do Cars: Only just started watching it so I don't know much detail, other than yet another YouTuber erroneously states it is based on a Ford design!
I have added a comment on the YouTube vid as follows:

"It may be an AJ series engine - AJ126 to be precise - but it has NOTHING to do with the earlier AJ engines used in some Fords in the late 90s when Ford owned Jaguar and Land Rover. It is 100% based on the AJ133 5.0 litre V8 which came out in 2009, after Ford sold JLR to TATA, which was a clean sheet design by JLR with maybe a little input from Ford. It has quite a few parts on it stamped "FoMoCo" but that is entirely due to the fact that it (and the V8) were originally built in the Ford Bridgend (Wales UK) engine plant under a deal between JLR and Ford. That deal expired in December 2020 and since then the V8 and V6 petrol engines have been built in the new JLR engine plant in Wolverhampton. Please, please stop calling this engine (and the V8) a Ford engine, it is not! PS - I own a V6 F-Type with the same engine which with very little mods and a tune puts out 450 hp."

 

It's interesting. Your explanation of how it's not a Ford engine makes it sound like a Ford engine. Developed under Ford ownership in 1997 and built using Ford parts on a Ford assembly line. But not a Ford?

 

Not a Ford assembly line, built at a Jaguar facility at the Ford factory. And wholly designed by Jaguar engineers.

 

Correct.
Also not developed under Ford ownership at all and definitely not in 1997.
Just reading through the comments on the YouTube vid and the sheer degree of ignorance about the AJ126 and AJ133 is stunning, with the majority believing the myth that these are Ford designed and built engines. Also lots of haters of these engines.

 

The 1997 reference was found on Wikipedia and references the AJ133.

I'm not a hater, but splitting hairs that it was a Jaguar line in a Ford plant and pretending that you didn't work for Ford as an employee of Jaguar seems a bit disingenuous. And I'm not a hater of the engine, I own one.

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Sorry if I implied you were a hater, I wasn't referring to you but to many commenters on the YouTube vid.
From all the research I have done I am fairly sure the workers on the JLR engine lines at Bridgend were all JLR employees not Ford employees.
Last but not least why would anyone believe what is shown on Wikipedia about almost anything? If (I haven't bothered to check) they really do say the AJ133 dates back to Ford and 1997 then they have got it completely wrong, it was most definitely a clean sheet design by JLR in 2008/9. Maybe you are mixing up references to the AJ26 and AJ27 which do date back to at least 1997, either that or Wiki have mixed things up. Yes the AJ133 is also known as the AJ V8 third generation but it has zero in common with the first two generations, and I reckon it was a mistake by JLR to name it an AJ engine.

 

They're probably assuming it's derived from the newly Jaguar designed V8 for the XK8 and subsequently XKR, 4 litres, later expanded to 4.2. Not sure why they didn't just develop that engine to 5 litres instead of doing a complete redesign - did they really get that first one so wrong? I'm no engineer, so what do I know (apart from knowing a non-Ford engine when I see one!)?

 

These are great engines. Period.

New metal coolant pipes and using the CORRECT coolant...that issue is fixed now for me (rear crossover in metal now too, about to gewt it installed this week).

New timing chain rev on our F types - frequent oil changes...great cars and great engines.

 

One more example of the massive ignorance out there about Jags. So many believing BS like that the cars are are totally unreliable, based on Fords, have some weird unreliable Lucas electrics and so on. In a way I think that's a bit of a blessing because it keeps a lot of people afraid of Jaguar ownership which in its turn keeps the cars exclusive and keeps used prices down which is great for those who are able to do their research and dare to buy one.

Another kind of funny semi ignorant thing I've seen surprisingly many times online is people calling these cars like a Honda - "Type R". What the heck's up with that?

 

Well, mine's an F "Type R". The F presumably describing how fast it is?
i guess those who call it a Type R have similar difficulty distinguishing between a lighthouse keeper and a light housekeeper.

 

This!

 

OzXFR, thanks for starting this thread.

I also get steamed when people say the F-type has a Ford engine. The first thing I point out is that it has a 90º configuration DOHC aluminum block, nothing like the Duratec 60º aluminum DOHC block also used in some of the Jaguar models.

My take on the F-type and AJ133 & AJ126?
1. Jaguar had been wanting to produce a successor to the E-type, but Ford wouldn't release the purse strings. When Tata bought Jaguar in 2008, they were able to get that funding.

2. What Jaguar wanted was to mirror the XK history, when the advance-exterior design XK120 was developed to showcase the advanced-engine design XK engine.

3. So, the first thing Jaguar did was to take the basic 90º configuration of the AJ-V8 design (developed in 1996 when owned by Ford) and re-design the block as a JAGUAR engine design, with the idea of a something worthy of the original XK engine design. I agree it should have been named differently, and not just given a Gen III" label. Even the Ford-wiki acknowledges that it was a completely new design (developed in 2009; after the purchase by Tata). See: https://www.ford-wiki.com/wiki/Jagua...8_engine#AJ133

4. Jaguar already had some good-looking concept designs (see the XK180), so they turned Ian Cullum loose.

5. Result? Something finally given the time-honored "-Type" moniker.

 

Remember, one cannot fix stupid.

 

First question is usually “Is it the v6 or v8”, followed by “it’s made by Ford right?”.

Truth matters little here though, nothing but compliments no matter who made the engine.

This channel also has the v8 tear down, but this v6 tear down is more complete, almost like it’s freshly dropped from a running car.

 

The pedant in me has to point out that as a British engine, the block is actually aluminium.

 

As an expat living in California, I still refer to the metal as aluminium. Just as one would say magnesium, or helium.

 

When the Maserati Ghilbl came out there were many posts by non owners claiming it was a Chrysler 300. They focused on the buttons and infotainment,which turned out to be far better than in any previous Maserati. The engine was built by Ferrari until they left Fiat. But that fact was always over looked.

 

Just watched the whole vid. Really interesting and pretty reassuring to see how solid these engines seem to be considering the good condition of it despite someone driving the crap out of it without coolant.

 

The rod bearing wear is concerning. As that is not directly affected by coolant overheating. Although, a severe overheat can also overheat the oil.

I do not use 0W-20 in my AJ126.

Metal rear coolant manifold? Anybody have a link?

 

But rod bearing wear can be affected by infrequent oil changes, wrong oil specification and so on.
And yes the rear coolant pipe is now available in metal for the 3.0 engine, but not yet for the 5.0.