Why do so many Americans hate European trucks?

Not sure, would have to look in SIS when I'm back at the shop.

 

They were too optimistic, i think they have no too clue what engine could really do and thereby clear lack of experience....
If i remember good it was 2800nm which is quite a lot for size. But i also think that early 510 could be quite close to this power

 

I think it would be quite easy to get let's say 600HP from the MX-13, after all they built a 1500HP race version. However that 600HP would be reached at a higher RPM, and that would mean higher specific fuel consumption. The DAF engine designers are looking for a lot of torque at low RPM, and a wide flat torque curve, gaining low specific fuel consumption, and that is what they have achieved as several contributions to this thread showed.

Let's compare the European MX-13 390 (530 HP) with the Cummins X15 engines. The MX-13 delivers 1920 Ft.lbf from 1000 to 1460 RPM. There are two X15 Performance engines, one with 485 HP, and the other with 605 HP. The 485 HP version delivers a torque of 1650 Ft.lbf from 1150 to 1500 RPM, so a lot less over a shorter RPM range. The 605 HP version delivers a torque of 2050 Ft.lbf from 1150 to 1500 RPM, so a bit more, but again over a shorter RPM range. There are also three X15 Efficiency engines, but only the most powerful 500HP version is of interest here. It delivers a torque of 1850 Ft.lbf from 1000 to 1400 RPM, so a bit less torque over a slightly shorter RPM range.

So, of the five 15 litre Cummins X15 engines, only the most powerful 605 HP version delivers more torque than the 13 litre MX-13, but over a shorter range and starting at a higher RPM. So the MX-13 does very well compared to the X15.

The Cummins philosophy is that if you want more power then the efficiency engines deliver, you can get it, but only with more RPM and less fuel efficiency. The DAF philosophy is much torque at low RPM, so I doubt if they will produce a more powerful engine if that means raising the RPM for that power. So it will be even more torque, or a bigger engine.

 

It is a shame he doesnt have the proper turbo setup to actually take advantage of the unburnt fuel he has. Less than impressed.

 

Can you post the data for any of this......?

 

I agree, but on the other hand, the owner may have been 'tuning' his engine, and for many drivers clouds of black smoke mean power.

 

Sure, no problem.

DAF:

https://www.daf.com/~/media/files/d...ts/mx13/69637_daf_paccar_mx-13_engines_en.pdf

Cummins:

X15 Performance Series (2017)

X15 Efficiency Series (2017)

DAF specifies its torque in SI units, so Nm, and 1 Nm = 0.738 Ft.lbf

 

Even tuned it should not smoke under boost. I helped set one up that works daily at over 1100hp to the tires and it smokes very little off boost and none when boost is up.

That guy may have been a member here at one time and was talking about running C15 acert compounds on a C18, but I do not know if that was the same truck.

 

Oh, I'm sure. That's why I wrote 'tuning' and not tuning. A smoking engine simply means your feeding it more fuel than it can burn, that is not proper tuning.

Don't know what compounds that would be, but if it is the turbo for instance, that could explain why the engine doesn't get enough air to burn all the fuel.