Why do so many Americans hate European trucks?

Good point. I read a comment by a British mechanic. His company has some US wreckers, based on W900 etc. He wrote that working on these things is horrible compared with a European COE. With a European truck, you tilt the cab, and then you can reach all components very easily, incl. the transmission.

 

The Mx engines are rolling road blocks around here.......

1650 pftttt..... since you got nothing to do put the torque curve of the 600 x15 and the Mx on the same graph...... and don’t doctor the lines ....

P.S. when there’re not in the shop with emissions issues.......

 

I'm just guessing here, but somehow I think that the likelihood of getting a million miles without overhaul out of an engine that hammers out peak torque @ 900 RPM, if driven that way, is pretty slim. Sure, the engine will have less revolutions per mile, but the hammering on the crank has to be brutal. What are the compression ratios of these engines?

 

Can't tell you what the compression ratios are. But keep in mind that European engine builders (cars of trucks) are used to getting more horsepower out of their engines.
The MX engines are designed for 1 million miles, the European engine is designed to run at 1000 rpm at the official maximum speed of 80 km/h in Europe.

 

Thanks for graph, plain to see how X15P is better in performance! Was talking to Peterbilt truck salesman yesterday after he picked up truck with a Paccar AMT/ Eaton Endurant transmission. He said about every guy he sold an efficiency series X15E is ready to shoot him. He spec-ed them with the high gear ratio that Cummins pushes and guess what the fuel mileage and performance sucks! Guys with X15P are getting better mileage and way more performance. Same goes with MX, if ordered for fuel mileage vs performance, the performance is getting same fuel mileage with much happier drivers. Down speeding only works well if you aren't grossing much weight! Drove the truck with the new style AMT. Clutching engagement and shifts are better than Ultrashift, but will not work in my application. Not built heavy enough for blower PTO operation. Guess we will just stick to our museum piece transmissions that have stood the test of time...
Also not sure why you put a EU MX13 on the graph. Your emission laws are not near as strict on NOx as US laws. If you don't believe me read this study for European parliament.

 

At 50 mph 300 hp ought to be plenty.

 

X15P is 17.1 and X15E is closer to 19.?.1. I read the other day, but cant remember the exact number. Here is the kicker. The X15E uses a "modified" intake valve timing and Cummins calls it Atkinson cycle. If you add a turbo to the "Atkinson cycle", it is actually the "Miller cycle", which is what the ACERT Cat was! Those had no issues...

 

So using half the fuel was bad ?

 

What a bunch of babble , if you look at the torque curve of a broke down mx13 (0) compared to a running Cummins that would be a more accurate comparison, a truck in the shop earns nothing