Quote:
Originally Posted by W124phile
Yeah, I realized that when I scrolled back to the beginning of the topic.
For some reason, I thought that the different power curve (peak nm is 450 rpm earlier) in newer cars is related to that. Earlier motor even advances the cam 2 degrees more.
Wikipedia:
So making power earlier is purely coming from larger cylinder bore + HFM? I mean even smaller displacement 2.8 is doing that. An interesting fact is also that 170kw versions of old CIS motors are making 40nm 100 rpm earlier, where does that come from? It has to be related to cam, or the timing...? |
The variable length intake manifold on the HFM cars plays a decent role in moving the peak torque down in the RPM range. The LH M104 does not have the bottom end the HFM cars do in this setting. The C36 moved back up the rev range due to cam timing and intake duration