Anyone have a 17 super duty?

[TSO]

My dad has a fleet of 6.0 trucks. Every winter the trucks get fluid maintenance, with one of the fluids that gets replaced is the coolant. Because the coolant never got to the point of the silicates falling out of suspension and clogging up the oil cooler, we never had EGR issues. Those tucks never had any problems that other 6.0 that were neglected had.

You will not find a tougher bottom end on any diesel out there. That is one area international did a find job on, because they were originally built as a bus engine.

I am a huge fan of 6.0 diesel trucks, but one has to understand them to own them.

Exactly. A friend of mine is a diesel mechanic and used to work for an International Truck Center. He said that the big trucks that did not have all of the added emissions equipment and who used heavy duty green coolant, did not have the same issues that were found in the Ford trucks.

But with all that said, I haven't heard anything bad yet about the new in-house 6.7 diesels. The new trucks look beautiful. Too rich for my blood though

 

[fordmantpw]

Exactly. A friend of mine is a diesel mechanic and used to work for an International Truck Center. He said that the big trucks that did not have all of the added emissions equipment and who used heavy duty green coolant, did not have the same issues that were found in the Ford trucks.

But with all that said, I haven't heard anything bad yet about the new in-house 6.7 diesels. The new trucks look beautiful. Too rich for my blood though

The International versions were also pushing 100 less HP and 100 +/- less ft-lbs of torque too. There's a huge difference when you turn the power up a bit.

 

[Snobdds]

The International versions were also pushing 100 less HP and 100 +/- less ft-lbs of torque too. There's a huge difference when you turn the power up a bit.

I have never seen a bottom end let go on a 6.0 power stroke. Even with very hot tunes. There are a lot of examples of 1,000+ horsepower builds that have stock bottom ends. Now the 6.7 is a fantastic engine, but Ford never put a bed-plate on them. They rely on a CGI block. The big horsepower builds require filling the block to add the strength that a bed plate adds.

The 6.0 has a very thick bed plate (griddle) that makes the crankshaft very rigid.

 

[ovrszd]

And the mechanic is a lot less cranky because everything is easier to get to and his knuckles are left intact!

That too....

 

[fordmantpw]

I have never seen a bottom end let go on a 6.0 power stroke. Even with very hot tunes. There are a lot of examples of 1,000+ horsepower builds that have stock bottom ends. Now the 6.7 is a fantastic engine, but Ford never put a bed-plate on them. They rely on a CGI block. The big horsepower builds require filling the block to add the strength that a bed plate adds.

The 6.0 has a very thick bed plate (griddle) that makes the crankshaft very rigid.

Yeah, the 6.0 bottom end was very stout. As far as the 6.7, well if 440 HP and 925 ft-lbs isn't enough for you, then I guess you gotta pay to play!

I just brought mine home. WOW! This thing is amazing! 60-80 MPH is just effortless. Makes my old 6.4L seem like a dog!

 

[Snobdds]

It's funny you mention the 6.4 powerstroke. It has always been my opinion that was the most powerful light duty diesel on the market, once the emissions were taken off of course. It derived all it's power from the twin turbo and there was no turbo lag, instant power from off throttle to red line. Ironically the 6.0 and the 6.4 are the same block, but the fueling, heads, and air management systems are different. The problem with the 6.4 was the emissions and it caused Ford and International to part ways.

The 6.7 has been a home run for Ford. I haven't tried a 17 yet, but I know the changes Ford did for 2015 made a world of difference (more fueling capacity, a VGT turbo, and new injectors).

 

[devildog1]

My brother has a 2015 F550 custom fifth wheel mule, he pulls a heavy monster 40 foot Cedar Creek with 5 slides from Az to Ticonderoga New York and back for the past few years. Beautiful loaded crew cab, in the shop in AZ., mechanics said DEF fluid basically destroyed the valves, by the way cab off for repairs, not sure of cost but I'll update. Just wondering if any other 6.7 PSD owners have same issue?
DevilDog

 

[fordmantpw]

It's funny you mention the 6.4 powerstroke. It has always been my opinion that was the most powerful light duty diesel on the market, once the emissions were taken off of course. It derived all it's power from the twin turbo and there was no turbo lag, instant power from off throttle to red line. Ironically the 6.0 and the 6.4 are the same block, but the fueling, heads, and air management systems are different. The problem with the 6.4 was the emissions and it caused Ford and International to part ways.

The 6.7 has been a home run for Ford. I haven't tried a 17 yet, but I know the changes Ford did for 2015 made a world of difference (more fueling capacity, a VGT turbo, and new injectors).

The 6.0 is what really cost International the relationship with Ford. There is a big back-story on that about International trying to slide by without developing the engine up-front for pickup use and they band-aided a lot of things. Lawsuits both ways, and that was the killer. The 6.4L was just a stop-gap to meet emissions until Ford had the 6.7L ready, and International was not prepared to use DEF to meet the more stringent emissions in 2010.

The 6.4L is truly a monster once deleted. However, mine had quite a bit of lag, even with the dual turbos (not twin, there is a difference ). This 6.7L has virtually no lag. It would flat walk away from my 6.4L, but mine were all stock.

My brother has a 2015 F550 custom fifth wheel mule, he pulls a heavy monster 40 foot Cedar Creek with 5 slides from Az to Ticonderoga New York and back for the past few years. Beautiful loaded crew cab, in the shop in AZ., mechanics said DEF fluid basically destroyed the valves, by the way cab off for repairs, not sure of cost but I'll update. Just wondering if any other 6.7 PSD owners have same issue?
DevilDog

The only way DEF could destroy the valves is if someone put DEF in the diesel fuel. DEF is injected in the exhaust and is never near the engine.

 

[devildog1]

The only way DEF could destroy the valves is if someone put DEF in the diesel fuel. DEF is injected in the exhaust and is never near the engine.[/QUOTE]


Only saying what Ford mechanic told him but are you a Licensed Ford mechanic?
DevilDog

 

[ovrszd]

Only saying what Ford mechanic told him, are you a ford mechanic?
DevilDog

I'm not a Ford mechanic but I know DEF isn't injected into the combustion chamber.

 

[devildog1]

If you look I didn't say it was, just that the FORD mechanic said that was the problem.
DevilDog

 

[ovrszd]

If you look I didn't say it was, just that the FORD mechanic said that was the problem.
DevilDog

I would suggest going back to him and asking how an injection intothe exhaust can ruin valves? Post the answer. I'm curious.

 

[devildog1]

I would suggest going back to him and asking how an injection intothe exhaust can ruin valves? Post the answer. I'm curious.

Yep me to and I wonder what the cost for the repair was. I'll post back when I get to talk to him.
DevilDog

 

[Diamondpilot]

DEF is injected in the exhaust stream, no where near the heads or valves.

He needs to find a new mechanic!

 

[Btown]

DEF is injected in the exhaust stream, no where near the heads or valves.

He needs to find a new mechanic!

I agree.

 

[devildog1]

Not sure if this relates but it does talk about cracked valves, Check this out. As I said guys don't shoot the messenger,some may not like what others have had troubles with but it is what it is, whether it be Ford dodge Chevy issues are issues.
DevilDog

[ Ford 6.7 liter diesel failure
A mechanic at a Ford dealership in Az posts interesting you-tube clips.
The 6.7 liter Scorpion engine made in Mexico by Ford has a failure pattern
in the non-waste gated chassis---F 450 and 550.
Multiple exhaust valve fractures in vehicles with as little as 20,000 miles.

apparently Ford is redesigning the head

here are 3 short clips

6.7L ENGINE DAMAGE, - YouTube

6.7L ENGINE/VALVE DAMAGE - YouTube

FORD 6.7L ENGINE DAMAGE(211) - YouTube


jh
/COLOR]

 

[devildog1]

Oh sorry forgot link, here it is. Ford 6.7 liter diesel failure
DevilDog

 

[fordmantpw]

The only way DEF could destroy the valves is if someone put DEF in the diesel fuel. DEF is injected in the exhaust and is never near the engine.


Only saying what Ford mechanic told him but are you a Licensed Ford mechanic?
DevilDog

Ummm, you don't need to be a licensed Ford mechanic to know the general workings of the truck. Do you have to be a Ford tech to check oil? Put fuel in? Geez dude.

 

[breadtrk]

Ummm, you don't need to be a licensed Ford mechanic to know the general workings of the truck. Do you have to be a Ford tech to check oil? Put fuel in? Geez dude.

So, with your general knowledge of a trucks workings.... You don't see how a malfunctioning DEF system can burn valves the same way a clogged up catalytic converter does a gas motor?

 

[moriboy]

If too much DEF is injected and it causes issues with the DPF regen process, bad things happen. Could it wreck exhaust valves? Maybe.