Navistar introduces new Class 4/5 truck

[haven]

Navistar's International trucks are well known in truck classes 6 and 7, above 20,000 lbs GVWR. Now they are entering the Class 4 and 5 market with the Terrastar line. Terrastar uses the International 6.4L diesel, the same engine sold in Ford's 2008-20109 Superduty pickup and cab/chassis models. It's coupled with an Allison 1000 series automatic transmission.

Here are a few photos: http://www.internationaltrucks.com/TerraStar?cmpid=170

Terrastar vehicles compete with trucks such as the Ford F450 and F550, Dodge 4500 and 5500, the Mitsubishi Fuso FE, Isuzu NPR, Hino 165 and the recently discontinued Chevy Kodiak/GMC Topkick. Their marketing hook is that the Terrastar line has the DNA and features of the International big rigs, such as stronger frame, bigger cab, and commercial grade running gear. The Maxxstar 7 engine apparently meets diesel emissions rules without the use of diesel emission fluid injection. That's unusual in 2011 models.

Here's why the Terrastar deserves notice on ExPo. Terrastar will be available with a front drive axle in 2011. And Terrastar will offer a crew cab. So the Terrastar should be on our short list as a cab/chassis for an extra large family camper with all wheel drive.

In USA, a Class 4 truck has GVWR from 14,001 to 16,000 pounds (6,351 to 7,257 kg). Class 5 truck is from 16,001 to 19,500 pounds (7,258 to 8,845 kg). The Fuso FG is a Class 4 vehicle, for example.

 

[charlieaarons]

. The Maxxstar 7 engine apparently meets diesel emissions rules without the use of diesel emission fluid injection. That's unusual in 2011 models.

.

It will probably have grossly inferior fuel economy compared to the F550 comparably equipped with the 6.7L motor, and one can only hope Intl's version of the 6.4 is more reliable than Ford's.
Int'l made a conscious decision to forgo DEF and use old technology (see below) at augmented levels. DEF cost ~same as fuel and consumption rates are 1.5-2% of fuel. Economy improvements are massive, however, with DEF.
DEF allows for many fuel economical tweaks, including lower EGR rates, advancing timing and fewer DPF burn-offs. It wouldn't surprise me for the 6.7 Ford Scorpion to show 20% or even 30% higher mileage than the 6.4 Powerstroke in comparable applications.
But I'm happy to see it!
I wonder if a manual trans is available?

Charlie

PS: Why don't you do a writeup on the Western Star 4900SA 6X6
http://www.westernstartrucks.com/Trucks/SevereExtreme/Military/4900sa.asp

 

[dzzz]

I suppose this is Navistar's way of getting back at Ford.

But Navistar still makes an engine Ford and its customers found unacceptable. If the positive reviews of the new Ford diesel continue, the new engine will be very popular.

Neither have good international support.

 

[jefe4x4]

Charlie,
I read the specs on the big 6x6 with Meritor axles and variety of speed auto trannies. But what about the T-case? None listed. What about lockers? None listed. I guess it's not like one of us would go out and buy one, unless you are a government.
I still have the Clark 280VO, 5 speed OD trans in my garage waiting for an application.
regards, as always, jefe

 

[SunTzuNephew]

It will probably have grossly inferior fuel economy compared to the F550 comparably equipped with the 6.7L motor, and one can only hope Intl's version of the 6.4 is more reliable than Ford's.
Int'l made a conscious decision to forgo DEF and use old technology (see below) at augmented levels. DEF cost ~same as fuel and consumption rates are 1.5-2% of fuel. Economy improvements are massive, however, with DEF.
DEF allows for many fuel economical tweaks, including lower EGR rates, advancing timing and fewer DPF burn-offs. It wouldn't surprise me for the 6.7 Ford Scorpion to show 20% or even 30% higher mileage than the 6.4 Powerstroke in comparable applications.
But I'm happy to see it!
I wonder if a manual trans is available?

Charlie

PS: Why don't you do a writeup on the Western Star 4900SA 6X6
http://www.westernstartrucks.com/Trucks/SevereExtreme/Military/4900sa.asp

International built the engine for Ford....it's the same engine. Not quite as bad as the International 6.0 but close.

The 6.7 is getting pretty good mileage in real world applications - severe towing across Colorado passes with a 5th wheel getting 10-12 mpg... 15+ around town, regens (burning out the DPF) happening quickly, infrequently, and without noticeable performance losses. At least according to the folks on dieselstop.com

 

[SunTzuNephew]

I suppose this is Navistar's way of getting back at Ford.

But Navistar still makes an engine Ford and its customers found unacceptable. If the positive reviews of the new Ford diesel continue, the new engine will be very popular.

Neither have good international support.

Two engines. The 6.0 was a POS.