3/4 or 1 ton "ecoboost"

[Winchested]

Of course they're not without issues, ford has made 10 million of them

I can't find any info that they are any less reliable than any other 1/2t except maybe the tundra. In fact most of what I have found shows them to be the opposite.

Again, I think most of the issues are with the first few years, as you'd expect.

Like always, I'm all ears to read about all these issues as I have a 99k mile 2.7.

I'd for sure buy a 2.7L Eb. They seem to be far more reliable only issues I've seen is seepy oil pans and bad heads on a few thousand engines. (recalled I believe).

 

[YotaAtieToo]

I'd for sure buy a 2.7L Eb. They seem to be far more reliable only issues I've seen is seepy oil pans and bad heads on a few thousand engines. (recalled I believe).

Yes, but I'd imagine they updated the 3.5 at some point to be just as good?

 

[Winchested]

Yes, but I'd imagine they updated the 3.5 at some point to be just as good?

The high output for the limited and raptor is a bit different. Turbos changed in 13/14 and again in 17/18. The dual port injection did help. But still see plenty of them not tuned that throw rods. They did update to run 3 timing chains rather than one long single chain.

But still see huge phaser failure rates. (Ford couldn't get that right on the 5.4s and still hasn't figured it out lol)

Ps. I love my Ford.

The 2.7 is built on a stronger graphite iron block.

 

[06h3]

All I can say is stay away from the 3.5eb. My 2011 has had the drivers manifold replaced. Phasers and timing chain done, pass side manifold is pooched now. Always something to work on. However it does pull great. I went from a non tow pkg truck, added a full frame OE hitch, brake controller, 3.73's. It's lifted 5-6" 34s, full midrise cap(carpeted). Weighs in about 6.5-7k lbs super crew 6.5 box.

Tows great. Tons of low torque but is it worth the non stop repairs? The 16+ 3.5s have just as many problems, usually come from the factory with bad phasers.

I tow a 2500-3000 lb deckover now, 5.5k scout on top of that. Still gets up and goes.

But next truck will be a 3/4 ton for sure. No stupid lifts or big tires on it.

Sounds like a diesel

 

[arse_sidewards]

The high output for the limited and raptor is a bit different. Turbos changed in 13/14 and again in 17/18. The dual port injection did help. But still see plenty of them not tuned that throw rods. They did update to run 3 timing chains rather than one long single chain.

But still see huge phaser failure rates. (Ford couldn't get that right on the 5.4s and still hasn't figured it out lol)

They haven't figured it out because as far as they're concerned it's not a problem. They go to shit with sludge and it doesn't take much. Change your oil on schedule and they don't have problems.

 

[Winchested]

They haven't figured it out because as far as they're concerned it's not a problem. They go to shit with sludge and it doesn't take much. Change your oil on schedule and they don't have problems.

Actually they do have problems even with proper 5k oil change cycles which mine were which were far less than Ford recommended oil change interval... (there was evidence in early blocks of casting flash/sand plugging up the phaser screens) no excuse for the 16+ 3.5s that have phaser clatter from day 1.

 

[JR4X]

OP, put any more thought into this?

 

[YotaAtieToo]

OP, put any more thought into this?

Not really

It's just hard to buy a gas truck for simplicity, then add a complex non factory turbo system to it

I honestly feel like the 6.7PS has been out long enough. I think buying a newer one with around 100k miles and doing some preventative things is probably the best bet.

 

[gozuki]

Actually they do have problems even with proper 5k oil change cycles which mine were which were far less than Ford recommended oil change interval... (there was evidence in early blocks of casting flash/sand plugging up the phaser screens) no excuse for the 16+ 3.5s that have phaser clatter from day 1.

I'm still waiting for the death rattle on my 17 3.5. Almost 70k on it now at 15 MPG

 

[Winchested]

I'm still waiting for the death rattle on my 17 3.5. Almost 70k on it now at 15 MPG

My new neighors truck is real bad, rattles away every morn lol.

 

[Aggie06]

Not really

It's just hard to buy a gas truck for simplicity, then add a complex non factory turbo system to it

I honestly feel like the 6.7PS has been out long enough. I think buying a newer one with around 100k miles and doing some preventative things is probably the best bet.

This is going to come as a shocker, but a buddy of mine did that with a 6.4 truck. Bought it with a 100k, and has run it for at least that without issue. He worked it hard pulling equipment around. It might be a unicorn though.

With a 6.7 it sounds like a even more solid plan.

 

[YotaAtieToo]

This is going to come as a shocker, but a buddy of mine did that with a 6.4 truck. Bought it with a 100k, and has run it for at least that without issue. He worked it hard pulling equipment around. It might be a unicorn though.

With a 6.7 it sounds like a even more solid plan.

I think JR4X had a similar experience with a 6.4

I spent a fair amount of time in an 08, had 260k miles when I left the company and it hadn't had too many issues. Spent a lot of time pulling trailers also.

 

[[486]]

Gas engine turbos are... problematic.

They work so well on diesels because of how self-regulating they can be. You make boost and it leans out enough that the EGTs decrease and you stop outrunning your wastegate. EGTs can... used to be able to be kept low enough that you didn't even need water in the center housing.
On overboost you just cut fuel back and it is the same as if you were cutting fuel for the smoke maps or the overspeed governor. No damage to the engine, and it'll keep on going as if nothing is wrong.

on a gas motor you need to keep the afr slightly rich or you start burning aluminum off your pistons, and that means EGTs are always 1800F or whatever no matter how much boost you're making, making for a system that'll feed into itself and run away into overboost very easily
so you're limited to throttle control or an enormous wastegate that almost none of them bother to package
Even spark-cut limiting will burn enough alu off your pistons to kill oxygen sensors and catalysts.

thus the magic that is an electronic throttle body. Can throttle shit back on overboost rather than just committing seppuku.

Reason we don't see the ecoboost in heavier trucks? There isn't much efficiency to be gained by downsizing the engine, as it isn't going to be run at low load very often if at all. You've still got a very restricted exhaust when you're running along with manifold vacuum. On diesels with no throttle plate you're making some boost at low load that's pushing the pistons down on the intake stroke, no real downside to strapping a turbo on.
On gas motors you can fuck around with running the wastegate electronically to open it when there's vacuum in the intake, but that's complexity and a ton of heat to manage.
The altitude compensation would be very nice, but that's a rather niche thing to most.

 

[JR4X]

Gas engine turbos are... problematic.

They work so well on diesels because of how self-regulating they can be. You make boost and it leans out enough that the EGTs decrease and you stop outrunning your wastegate. EGTs can... used to be able to be kept low enough that you didn't even need water in the center housing.
On overboost you just cut fuel back and it is the same as if you were cutting fuel for the smoke maps or the overspeed governor. No damage to the engine, and it'll keep on going as if nothing is wrong.

on a gas motor you need to keep the afr slightly rich or you start burning aluminum off your pistons, and that means EGTs are always 1800F or whatever no matter how much boost you're making, making for a system that'll feed into itself and run away into overboost very easily
so you're limited to throttle control or an enormous wastegate that almost none of them bother to package
Even spark-cut limiting will burn enough alu off your pistons to kill oxygen sensors and catalysts.

thus the magic that is an electronic throttle body. Can throttle shit back on overboost rather than just committing seppuku.

Reason we don't see the ecoboost in heavier trucks? There isn't much efficiency to be gained by downsizing the engine, as it isn't going to be run at low load very often if at all. You've still got a very restricted exhaust when you're running along with manifold vacuum. On diesels with no throttle plate you're making some boost at low load that's pushing the pistons down on the intake stroke, no real downside to strapping a turbo on.
On gas motors you can fuck around with running the wastegate electronically to open it when there's vacuum in the intake, but that's complexity and a ton of heat to manage.
The altitude compensation would be very nice, but that's a rather niche thing to most.

Good info and makes me realize I don’t what I’m dealing with. If ford can get trucks built I’ll probably be in a 7.3 Godzilla truck in a year or two.

Was told on Thursday that work had 101 trucks ordered, they got 6 of them and Ford canceled the rest of the orders on their end. I’m not due as of right now but in less than a year I’ll have 150K on it. Doesn’t sound like a lot to anyone who doesn’t drive the roads I drive but trust me, at 100K this thing already feels like a bowl of jello driving down a washboard road.