Well, the majority of twin-turbo'd cars don't add much more than 100HP in factory trim from the NA version. 300ZX's for example had 222hp NA's and 300HP TT's. Now by upping the boost a bit and reprogramming the ECU, you could hit 400HP pretty easily. The only issue that will remain to be seen is how long the engine/turbos hold up under normal use, especially in a truck environment.

 

Personally, I'd like to see a smaller version of the powerstroke in an F-150. I think mid 20 MPG range would be easy to achieve and still have plenty of power

 

The ecoboost engine does look interesting but I hope Ford does not overlook the fact that many long time truck owners may find it hard to accept a V-6 in a full size truck. The power and fuel savings would have to be overwhelming for me to consider giving up the 8 cylinders I have been used to having for the last 25 years. I am just not sure I could live without that nice low rumble! lol Maybe they will make an EB 8 eventually?

 

I would rather have that 4.4L Diesel than an EB v8. That's just me, though; the Lightning/SC'd guys will most certainly disagree but I don't care how fast my truck does 0-60mph.

 

All the advantages of a modern high pressure direct injection turbocharged diesel engine can be had in a high pressure direct injection gasoline engine without the costs to handle NOx and particulates. Look at the torque curve, 350lb-ft form 1500rpm to 5250rpm. I don't know that either the 5.0L or 6.2L will have that flat a torque curve. And aftermarket tuners can play with boost levels to get you as much power (and more) as the engine can handle.

Turbocharged (single or twin) engine designs and tuning of 20 years ago are not the same as now. They used to be designed for strong boost above say half of redline and major lag, no torque off boost. Most of today's turbocharged engines have a much broader torque curve. WV/Audi, MB, BMW all have direct injection gasoline engines with similar torque curves (flat from 1500-5000rpm) in various engine displacements.

Now I'd love to see a ~4.5L Ecoboost available in the F-150. Power should be about 100HP/lb-ft per liter, so 450lb-ft from 1500-5000rpm! I don't care how many cylinders, 6 or 8.

 

yeah thats true. i wasnt thinking earlier. i was thinking about the supras i have seen pushing out over 700hp with a single turbo, but then realized, they have a lot of other upgrades to handle that from the turbo. my bad.

 

You also need to look at it from a reliability standpoint as well though. Diesels, for the most part, are built MUCH tougher than a gas engine counterpart. I would rather that turbocharger be boosting a diesel for 150k miles than a gas.

 

I want to see an ecoboost 5.0 real bad!!!

 

I have a feeling they thought about that...

 

Still a fan of diesels in vehicles smaller than 3/4 ton though, gas engines just don't cut it when compared to many of their overseas diesel counterparts. Example, Land Rover Discovery 1 V8=10 mpg, poor horsepower, great torque, **** poor reliability.
Discovery 1 300 tdi=25-30mpg, good horsepower, amazing torque curve, Never a problem.

 

I imagine the cost of the diesel motor would be what is holding Ford back from putting it in the F150. Just look at how much more a super duty is with a PSD than with a gas motor.

 

Couldn't be more right. And the fact that everyone in America wants a gas motor. It is just the opposite in europe.

 

I still think time will tell on the reliability of a boosted engine in a truck application. Also, how much are these things going to cost I wonder?

 

The new 5.0 was designed with direct injection and turbo charging in mind for future applications... You may get your wish someday...

 

Oh me too. The 5.4 really does have enough HP for most people, but the added advantage of extra tough is always needed with these trucks. But at the same time, you add as much pulling power as the extra torque will allow for and all of a sudden you don't have a vehicle big enough to handle the load. I guess its a double edged sword.

I still cant see a smaller high revving engine lasting under constant tow load, plus the addition of a twin turbo. But, as a "commuter" truck, i can see it lasting well. Hard to tell what the efficiency number will look like after shift programs, ECM and truck gearing is applied to this engine though.