A Sneak peek @ the 6.7L (pics)

[DMcPherson]

I have 13 of those in my shop right now. the emission products on the new product are greatly improved over the heavy duty emissions. looks to be fairly trouble free. I just went through the Cummins road show with factory engineers on these things. I am fairly impressed.

 

[mhenon]

Unfortunately, I wonder if the 6. 7L will be as mightly as the 5. 9L has been for the last 18 years...



IMO, with the intro of the 6. 7L emissions engine, I wonder how "reliable" it will be... that was one thing I always liked about the CTD, very reliable. Might prove to be DCX's downfall with the CTD line of trucks...



steved

I don't think it will be a big problem. Most of the tricky emission stuf comes after the exhaust. . other than the EGR. There might be some fouling of the intake manifold with EGR (our Jetta has this problem) but the ULSD should minimize deposits.

Mike

 

[EMD-Run8]

I'm no Cummins mech or tech guy, but I kinda look at it the same way. Two years of road use before it went into these trucks ought to more than work out any real problems. The variable geometry turbo is just genious with what-----one moving part?! I'm kinda unsure about all the electronic gizmos but pretty much everything is going that way so what do you do? Now, Urea injection is where I draw the line. That's just nuts! Is it even really an engine at that point? I dunno but Cummins has a real good track record with their electronics, so I think they'll pull the holeshot with the 6. 7. I will be interested to see what kind of mpg they will get. The taller overdrives seem like they may keep the engine closer to their sweetspots which may offset the emissions/ULSD penalty. I guess we'll see.

 

[C. Harlan]

When we were at the Great American Trucking Show, I recall a Cummins Rep telling us that the Cam was driven from the rear, which IMO will make it a little more difficult to BOMB... That aside, I can't wait to see how much deeper of a rumble it makes under a good load, spooled up. . I am also curious if they will develop a real, true, valve operating engine retarder. . I mean, this motor should be big enough, though it may take a little more room to mount the jakes on top, but still, I believe in a few years, they will have an engine brake, NOT EXHAUST, but real, loud, cackling jake brake for one of these motors. . How 'bout y'all??



-Chris-

 

[steved]

The 6. 7L (and its 4. 5L counerpart) have been in use for at least two years. It is at least as good of an engine as the 5. 9L. I have much more confidence in Cummins than anyone else and I know they will not build a junky engine. Unfortunately, everyone has to comply for overly restrictive emission standards and it makes engines much more complex. Gasoline engines have to meet new standards too and wouldn't you rather have an emission laden inline 6 than a V-8 with the same (or more!) emission equipment?

While I agree with the beefiness of the engine, it appears to me from what I have read to have a lot more computer control... even more than the current CRD... more things to go wrong...



steved

 

[CHolman]

Well if I where in the market for another diesel, I'd give the new 6. 7 a chance before I would the other two makes. The engineers at Cummins aren't stupid and have great faith in them. The other trucks will probably have just as much or more computer stuff and just look in the engine bays... . What a cluster F(k

 

[Vaughn MacKenzie]

The 6. 7L (and its 4. 5L counerpart) have been in use for at least two years. It is at least as good of an engine as the 5. 9L.

Check Steve St. L's article. . . the Ram 6. 7 is all new and not the 6. 7L Euro spec engine that's been out awhile. The Euro 6. 7 is a stroked 5. 9, with 102mm bore. The Ram 6. 7 has a larger 107mm bore, and shorter stroke.



Vaughn

 

[mhenon]

Here's what I like about it... ... ... ... ... ... ... ... ... ... . No VP44!!!

Really though... you can't compare Ford or Chevy's V8 engine with anything put out by Cummins. You're talking apples and oranges.

Mike

 

[Johnstra]

Do I see 2 oil filters on that engine?

-john

 

[Coalsmoke]

When we were at the Great American Trucking Show, I recall a Cummins Rep telling us that the Cam was driven from the rear, which IMO will make it a little more difficult to BOMB... That aside, I can't wait to see how much deeper of a rumble it makes under a good load, spooled up. . I am also curious if they will develop a real, true, valve operating engine retarder. . I mean, this motor should be big enough, though it may take a little more room to mount the jakes on top, but still, I believe in a few years, they will have an engine brake, NOT EXHAUST, but real, loud, cackling jake brake for one of these motors. . How 'bout y'all??



-Chris-

IMO, it won't happen.

FIRST:There's no point to it. Companies like PacBrake are making some amazing products now, that reach the desired maximum or near maximum reatarding values on the engine, for about 1/3-1/4 the cost of a real engine compression brake.

SECOND: nothing is going to be loud and crackling through these new DPF. Your common household pillow shoved into a soup can would allow more noise through than these. Now, maybe if the DPF didn't have end caps, but they do, so all of us who love the straightpipes or even loud diesel sound are SOL. You'll have to play a loud diesel engine CD if you want anything close to what we used to have.

THIRD: Compression brake manufacturers are priding themselves on how quiet they can make a brake no days. There is no more crackling, because most of the city, urban, and semi-rural areas are outlawing heir use through noise pollution bylaws.



Yes, IMO the compression brakes are still somewhat better at what they do than an exhasut brake on a light-small medium duty engine, but, not enough to warrant feasible sales numbers of a compression brake. that said, if they did come out with a real Jake, I might want one just for the coolness factor and for not having to hit 2000rpm to have a decent amount of retarding power However, even if D/C ends up building the 5500, the Jake still probably won't happen because the 6. 7l has the built in exhaust brake, and from the factory its cheap, really cheap.

 

[JBlock]

Look like a tractor engine in that RED

 

[Sled Puller]

The engineers at Cummins aren't stupid and have great faith in them. (k

How soon we forget the boat anchor 98. 5- 02 53 block/ VP-44 24 valve engine??? That little fiasco was Chevys best salesman.



I predict massive electronic failure. :{for starters. Buy the extended warranty!!!



If the block holds, it may be a nice engine to P-pump.

 

[WyattEarp]

my first impression was thats an industrial application of course the 12V thats in my 92 could be used for the same purpose. . Gotta love Cummins and that Inline, that right there is Perty lol. .