Phantom RS

Mack Truck:

13 liters
6 cyl inline
415 HP
1,660 ft lbs
2,100 max RPM

R8 TDI:

5.9 liters
V-12
500 hp
738 ft lbs
4,800 max RPM<ul><li><a href="http://www.macktrucks.com/assets/mack/specsheets/MP8415C1001514.pdf">Mack Truck Engine</a></li></ul>

crespo

that's... not even remotely close?

Phantom RS

My first thought when I saw the torque number on the V12 was "Jeez, you could pull a hell of a trailer." And a few articles on the V12 have talked about the truck-like torque numbers. So, I was curious as to just how much torque your typical semi-tractor actually has.

So, the answer is, the V12 produces about half the torque of a Mack Truck and has about half the displacement. And it produces a little more HP thanks to the ability to rev more than twice as fast.

I'm guessing that nearly as much engineering has gone into the Mack Truck engine to optimize it for its application (power, fuel efficiency) as went into the V12 to optimize it for passenger vehicles. So, it shows how different two different applications of turbo diesel technology can be, even though the produce similar torque per liter numbers.

VerrÜckt

Detroit Diesel DD15.

A big difference though between the Audi engine and the truck engine...

The truck engine will go 750,000-1,000,000+ miles without needing a major overhaul. :-)

There's actually more technology in that truck engine than the Audi engine.<ul><li><a href="http://www.detroitdiesel.com/pdf/engines/2007-dd15-specs.pdf">Click.</a></li></ul>

tpierce

LOL@ 2560lb dry weight.

larryV

lol @ "BOOYAH I'm the king of the road" title for one of the dyno hp curves in that pdf

VerrÜckt

Ha ha ha. That's called knowing your demographic.

Phantom RS

<center><img src="http://www.bradsclassictrucks.com/Copy%20(2)%20of%20Copy%20of%20wedding%20day%20003. jpg"></center><p>

Audis or VWs 4Life

Anyone ever see the monster garage where they tried to make a motor bike with a mack truck engine? They ended up having to ditch the bike idea because the engine weighed so much, and build a trike.