JALEN BAKER

I wonder why for didn't use the 3.0 duratec engine by looking at the stats this engine had way more potential then the 4.0 I mean if you think about it the 4.0 isn't really a truly overhead cam engine he uses the jackshaft I know it's over and done with I wonder why Ford didn't just invest money into the 4.0 and redesign how to block please put your opinion I might learn something new lol

imp

I've come to think Ford just turned over the reigns to the Cologne, Germany Engineers, to finish up the design, basically modified from the previous OHV 4.0.

But, don't really know. As an Engineer, I am at odds with a number of design factors of the 4.0 OHC. The sh!tty chain guides, their locations, the crankcase "girdle", to mention a few.

JALEN BAKER

👍👍👍👍👍

Dino Dino Bambino

If you're from the "no replacement for displacement" school, that's reason enough. The 4.0 V6 Cologne engine was probably just intended to be used as a stop gap while the 3.7 V6 was under development.

JALEN BAKER

Okay wow that makes a lot of sense 👍👍

Norm Peterson

A normally aspirated 3.0L engine with much power upstairs isn't going to have much low end torque and wouldn't be a good match for a 3500-ish lb car. Take about 800# out and it'd be a slightly different story.

The Maxima in my sig is a 3.0L car, and at about 3200# with 227HP and 217 ft*lbs is a bit peppier than a similar engine would be in an S197. Its straight-line performance is adequate without being anything you'd ever get excited about.


Norm

Derf00

In my opinion it's because the 3.0L duratec had traditionally been utilized in only FWD or AWD applications. To adapt it to RWD and make a RWD Tranny/adapter to fit would've taken more resources and time than Ford was willing to put into it.

Also traditionally, the engines utilized in the Mustangs are derivatives of what is used in the F series. The 3.8/3.9L were derivatives of the 4.2L already in the F-150.

The 4.0 is a derivative of the 4.6L modular engine used. Certain parts are the same and tooling at a plant can be easily changed over from building one engine to the other.

JALEN BAKER

Okay. I respect your opinion. But the 4.6 modular engine has no type of relation the 4.0 at all they're totally different power plant.

JALEN BAKER

You're right I just did my research and now I see why they didn't use the 3.0 LOL the 4.0 engine is really Torquay LOL I had no idea LOL now I see why they used it on the Explorer

Dino Dino Bambino

Correct. The 4.0L SOHC V6 was an evolution of the 4.0L OHV V6 that was in production from 1965. It was a durable engine that had decent performance in its day, but it was more suited to an SUV rather than a Mustang with its bias towards low rpm torque. By 2010 its design was 45 years old and it was time to lay it out to pasture. With modern N/A 4.0L engines producing 300+hp, its 210hp & 250lbft left it way behind the field, but the 3.0L Duratec V6 produced too little torque to be a suitable replacement in a 3500lb car.