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Old 03-05-2012, 04:14 PM   #11
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Well depo, that sounds like a pile of hogwash to me. And who told you the Ecoboost was a "low torque" engine? Check the specs.
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Old 03-05-2012, 04:31 PM   #12
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Quote:
Originally Posted by crocus
Well depo, that sounds like a pile of hogwash to me. And who told you the Ecoboost was a "low torque" engine? Check the specs.
The specs are checked.... they claim 400 ft lbs, but check out how that is achieved.....

It is not hogwash if from an engineering stand point you understand that the stresses that are created on an engine under load with the use of turbos creates great internal challenges.

Also read the road testing of the vehicle by truck magazines.... Same thing I mentioned while it gets 20+ mpg unloaded the towing of comparable weight is equal to or well below that of a V8.

Go to a drag strip watch two cars race.....

a 400 HP muscle car and a 400 HP turbo 6, you will understand the difference.

For a 400 hp turbo 6 to achieve the exact same power at launch it must spool up to the RPM and Boost which create heat and work. a 400 HP muscle car achieves this at a much quicker rate. Then the point at which a turbo car reaches maximum amount of acceleration is well down the track, but comes on at a Massive rate. Whereas an engine in a larger displacement vehicle has that curve at a much earlier point of the pull.


I love the idea of having a 3.5 twin turbo putting 350+ hp, but

I will tell you when shopping for a truck I went to the ford dealership and they specifically told me if I was towing consistently that I was much better off with a V8 or a Diesel, but as the weekend warrior truck and a commute vehicle the Eco was a great option.
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Old 03-05-2012, 04:35 PM   #13
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depo, you apparently do not understand how the Ecoboost functions, so no point in wasting space debating the issue.
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Old 03-05-2012, 05:04 PM   #14
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agreed! don't know what you expected towing into a headwind.
we all get about the same gas mileage doing that. especially at those speeds.
you do know that you increase the wind resistance a lot, by driving that fast. and your tires are only rated to 65mph.
no wonder you got only 7mpg!

and i seriously doubt you'll see much of a gain in mpg, with a shell.
it'll take a lot of towing to recoup the money you'd spend for one.
I kept the speed lower on the secondary roads, but on I 45 in Texas going south from Dallas the traffic is probably doing 85. That was where I was doing 65-68. Your observation about the time to recoup the cost of the shell is apt. So far 90% of my miles on the truck are non towing. But, all these factors were the same when I was getting 10 mpg on one trip. Go figure.
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Old 03-05-2012, 05:08 PM   #15
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Quote:
Originally Posted by crocus
depo, you apparently do not understand how the Ecoboost functions, so no point in wasting space debating the issue.
Nope.... me big dummy
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Old 03-05-2012, 05:48 PM   #16
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[What has also been a concern is the "rumor" of engine failures due to those people that are using the truck as a "work" truck, towing and hauling heavy loads on a regular basis. What the rumor is a lot of scorching going on in the motors due to the quite higher temps that the motor runs at when using turbos. Causing scorched cylinders and valve issues.

My buddy who is a Mechanical Engineer and works on heavy duty agricultural equipment said to me if you are towing or hauling nothing will ever beat displacement. Especially a low torque high horsepower engine like the Eco Boost.[/QUOTE]

I have not heard of any failures to "work". Some people have experienced gate issues on the turbos and coil issues. I have read countless blogs on F150 forums and I have not read anything about burnt cylinders..The black soot is coil problems not burnt cylinders...... Low torque???? 420ft-lbs is far from low torque. The 3.55 rearend is not great for towing. The 3.73 will provide better towing mpgs. The 3.55 will bog down the engine and decrease mpgs. The higher rearend will give better mpgs on the highway though.....
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Old 03-05-2012, 07:02 PM   #17
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I do not mean to offend....

Sorry I did write low torque.... I thought I corrected that in my original post....

The torque is insane on the motor, but at a very limited RPM range and drops of quickly and takes a while to to get there. Now mind you it is right at the RPM range you want to be at which is 1200 to 2000 RPM when you are rambling down the highway. But in theory you want that torque at initial start and all the way across, which is not what the EB does on an engine dyno or at the rear wheel.

As I said, I think the engine is a create concept, I hope that they come up with a durable long lasting Eco engine that gets 35 MPG.....

But my concern is that they have torn some motors down and have found some odd wearing that they usually do not see on other motors. The other issue is that they have under load consistently shown lower then average gas mileage then other half ton trucks with V8s.

This is not a bash on the motor at all..... it is something to watch for as this motor progresses.
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Old 03-05-2012, 09:45 PM   #18
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2011 Ford F 150 Tourque Photo 70

Here is a graph of Ford's engines available for the F-150. The Ecoboost looks good compared to the others

I will tell you when shopping for a truck I went to the ford dealership and they specifically told me if I was towing consistently that I was much better off with a V8 or a Diesel, but as the weekend warrior truck and a commute vehicle the Eco was a great option.[/QUOTE]

That describes mine exactly. I just dragged some huge chunks of concrete around my property, actually pulling the smaller piece at idle in 4 low. I had to tap the gas a little for the big pieces
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Old 03-05-2012, 09:55 PM   #19
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[QUOTE=bikendan;166924]agreed! don't know what you expected towing into a headwind.

The headwind was pretty tame at 10 -15 off the right front quarter

we all get about the same gas mileage doing that. especially at those speeds.
you do know that you increase the wind resistance a lot, by driving that fast. and your tires are only rated to 65mph.

I kept reminding the DW about that, but she kept saying faster, faster. One must obey the captain



You're right, I didn't know what to expect - I've camped exactly 8 days in the Tracer so I'm a newb at this. I was hoping for better, but this may be the norm. What mpg do the rest of you get towing, at what speed?
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Old 03-05-2012, 09:57 PM   #20
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Many years ago, my boss had a big Ford truck (It would be an F-350 in today's parlance) with a 12' slide-in camper. I think the truck had a 429 engine. Running with just the camper, he got a consistent 6.5 mpg. When he towed his sailing dinghy behind, it improved to almost 8.5. He figured the boat and trailer broke up what aerodyamicists call "bluff body drag", caused by a bubble of negative pressure air behind the vertical rear surface of the big box.

Even if they were'nt going to use the boat, he always towed it.
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