'11-Up General QuestionsGeneral questions related to 2011-Up Super Duty trucks. If it doesn't fit the other categories, post it here. Gas engine discussion that pertains to all models is allowed. Specific gas engine questions should use the Gas Engines forum.
The exhaust brake on the 6.7 is activated when in tow/haul mode. It does not have an independent switch. It functions by closing the inlet vanes on the turbo creating back pressure. The 10K trailer should be handled quite nicely by the brake. The brake has not been as powerful as the CUMMINS/DMAX SETUP in the past, but I thought I read somewhere that the 2013 was to be improved.
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2013 F350 PLATINUM 4X4, PSD, 3.55, HARD LOADED WITH ALL THE GOODIES, KODIAK BROWN WITH PECAN INTERIOR, ARE FLAT COVER, 55 WATT HID LIGHTS
Hopefully it's a flash of some sort that changes the braking power...that way the 12's could use it. My brake works fine, it would be nice to have a little more though.
When you get your truck, play with the exhaust braking so you understand its limits and capabilities. I find it works very well for what it is designed to do.
1st thing to understand is that it is not going to stop you, The exhaust brake is basically there to reduce your use of your wheel brakes. It is better suited to holding a speed than it is to Slowing you down from a higher speed.
The exhaust brake does almost nothing at 2000 rpm, You really need some RPMs to build the back pressure. So plan on being up around 3000-3500 rpm when you want it working.
I find it works best if I set my cruise at the speed I want to hold going down a grade at the summit before I start down the grade. For example, Coming down I-80 in Parleys Canyon to Salt Lake City is a 20 mile downgrade, a lot of it at the upper stretches are 7%. Being an interstate the speed limit is 70-75 mph. But it has curves that I don't want to go faster than 50-55 mph around. As I summit the pass, I slow down to 50 mph and press my Cruise set button. I can then descend all 20 miles of this grade with out touching my brakes with my 13,000 GN horse trailer behind me. The truck will shift between 4th and 3rd gears as needed. I'll probably creep up to 55 maybe even 60 mph in the steepest sections. As I get a little lower down the canyon and the grade flattens out to 3-4%, I can bump the cruise up from 50 to 55 or 60 mph so that I'm keeping up with traffic.
Another example is coming off the Logan Canyon, This is a two lane hiway that carries a 55-60 mph speed limit but has some 40 mph curves. It has 7&8% grades. So I set my cruise at 40 mph at the summit. The tranny will shift down to 2nd and hold my rig at 40 mph down the grade, There are a couple of 30 mph corners where I have to touch my brakes to slow that little extra for those curves and then I reset the cruise at 40 mph as I come out of those curves.
The last example is coming down out of Eaglewood subdivision with my equipment trailer and mini-excavator. It's a 25mph street with a 12% grade. I use the +/- to select 1st gear as I start out. It will hold me at 25 mph down that grade without using my brakes.
Just think ahead and plan what speed you want and start there or else you will need to use your brake to slow to that speed. The computers won't allow the tranny to down shift into a lower gear if it is going to over rev your engine. Almost all your engine braking will be in 2nd or 3rd gears. 4th gear and higher you just can't get enough RPMS to create the back pressure needed. ( at least not at a safe speed)
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11 F350 CC Lariet SRW LWB Tuxedo Black
B&W turnover ball
Just repeating myself.....I miss my manual transmission and BD exhaust brake with compressor!!! Pick a gear, add the EB and things slowed down when needed or held as required. Sigh.....
Wonder if there will ever be a similar system for these beasts??
Painted Horse provided an accurate description of how the new system works, but despite the positive, I still miss being able to slow my vehicle, and actually feel the slow , at lower RPM's.
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99.5 F-350 S/C 4X4 - gone
2012 F 350 S/C 4X4 Lariat - Armaguard liner, OEM rear wheel tubs, adobe powder coated cab guard & fifth wheel gate, Beamer HID's, Rigid 20" light with adobe bar, Kenwood stereo with Nav & back up camera
The exhaust brake on the 6.7 is activated when in tow/haul mode. It does not have an independent switch. It functions by closing the inlet vanes on the turbo creating back pressure..
Did Ford change the programming to add turbo braking? Because the previous erroneously called exhaust braking was nothing more then aggressive EGR and computer programming of the shift points.
Would be nice to have a real exhaust brake or at least the turbo feature.
Did Ford change the programming to add turbo braking? Because the previous erroneously called exhaust braking was nothing more then aggressive EGR and computer programming of the shift points.
Would be nice to have a real exhaust brake or at least the turbo feature.
The 6.7L uses a Garrett single sequential turbo (SST) with variable geometry, a dual-scroll exhaust housing, and an externally actuated wastegate. This turbo has a pair of compressor wheels that are coupled together on a single shaft driven by the turbine wheel. The design is said to dramatically increase the compressor map's range and functions like a sequential twin-turbo system. The boost pressure will be around 30 psi, the turbine shaft speed will see up to 130,000 rpm, and the whole system was designed to function as an exhaust brake. The compressed air will be cooled by an air-to-water intercooler-another first in this segment.
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2013 F350 PLATINUM 4X4, PSD, 3.55, HARD LOADED WITH ALL THE GOODIES, KODIAK BROWN WITH PECAN INTERIOR, ARE FLAT COVER, 55 WATT HID LIGHTS
The 6.7L uses a Garrett single sequential turbo (SST) with variable geometry, a dual-scroll exhaust housing, and an externally actuated wastegate. This turbo has a pair of compressor wheels that are coupled together on a single shaft driven by the turbine wheel. The design is said to dramatically increase the compressor map's range and functions like a sequential twin-turbo system. The boost pressure will be around 30 psi, the turbine shaft speed will see up to 130,000 rpm, and the whole system was designed to function as an exhaust brake. The compressed air will be cooled by an air-to-water intercooler-another first in this segment.
and the whole system was designed to function as an exhaust brake.
Same as the DMax, only the DMax uses that feature, and is standard on the Garrett. Actually, any variable geometry turbo has this capability.
I haven't found any real reference yet that actually documents the turbine blades being used as a brake. In Ford's demo video the graphic display is limited to EGR.
I've yet to see an aftermarket exhaust brake for these engines. Nobody has released a product yet. You can go and check, Banks, B&D, PacBrake and none of them are even hinting that something is close to coming to market.
You are pretty much stuck with what Ford gives you in the stock engine. For me it has worked great. You may have heavier loads than I tow or steeper grades where you need something more. And if you do, you may want to start looking at other trucks.
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11 F350 CC Lariet SRW LWB Tuxedo Black
B&W turnover ball
You may have heavier loads than I tow or steeper grades where you need something more. And if you do, you may want to start looking at other trucks.
The stock programming I have found to work well mostly at highway speeds. Pulling 18K of toy hauler the truck does a fine job of maintaining set cruise control speed up or down long grades. Enough so that I have a tendency to disengage the cruise going down to build up some speed.
Where I find it severely lacking is in what I call the country roller coaster hills.
Basically, 35-45 mph limited 2 lane roads that go up and down 200-400 feet or so.
It is these hills that a true engine or exhaust brake would shine, even better, a Telma retarder.
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Originally Posted by broome101
you also have Hill Discent button you can push that also will help you, but with only 10K unit pulling you hsould not have nay issues what so ever
Not available with DRW. But, it is only for low speed, off road use, and for limited time periods, partly due to application of the service brakes.
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Pick a gear, add the EB and things slowed down when needed or held as required. Sigh.....
Linear Mode
