M600 exhaust question
Discussion
I'm always amazed when I hear an M600 video by how deep the exhaust note is. The engine is not big by Yank standards. I know some of you guys have been lucky enough to check out an M600 firsthand - do you know if the exhaust system isolates the two V8 cylinder banks? I've learned that isolating the banks creates a deeper note, joining them creates a higher pitched note.
Jeff
Jeff
The M600 has exhaust valves to divert the gasses, don't know how they manage the valves but that might make it deeper.
The noise is going to depend on the v configuration and firing order to a large degree and just because it's not got the capacity of some American Vs won't mean it can't be as deep?
The noise is going to depend on the v configuration and firing order to a large degree and just because it's not got the capacity of some American Vs won't mean it can't be as deep?
I'm drawing on two things:
1) I had a V8 car that I took to the drag strip occasionally (9.47 at 148 best
with a good friend who loaned me his truck and trailer in exchange for a full tank of gas and a nice dinner. I usually ran it with stubby mufflers bolted to the header flanges, meaning that the banks were isolated. One time I ran it with the street exhaust, which brought the banks together into a single 4" pipe and muffler. My friend, who had heard me make dozens of passes, asked if I was shifting at 8000 RPM. He said the difference in exhaust note pitch was dramatic.
Here's a short video: http://www.youtube.com/watch?v=NntY4NwhYuA
2) You've all heard the change in V8 Ferraris from 355 to 360 to 430 to 458. The fundamental frequency is getting lower despite the redline creeping up.
Favorite exhaust video: http://www.youtube.com/watch?v=_UWVxT7YcFw
There are probably lots of factors in exhaust sound besides engine capacity and isolating the banks, but in my experience it's clear that, other factors kept equal, bigger displacement = deeper and isolated banks = deeper.
The single M600 can could be isolated inside.
Jeff
1) I had a V8 car that I took to the drag strip occasionally (9.47 at 148 best
with a good friend who loaned me his truck and trailer in exchange for a full tank of gas and a nice dinner. I usually ran it with stubby mufflers bolted to the header flanges, meaning that the banks were isolated. One time I ran it with the street exhaust, which brought the banks together into a single 4" pipe and muffler. My friend, who had heard me make dozens of passes, asked if I was shifting at 8000 RPM. He said the difference in exhaust note pitch was dramatic.Here's a short video: http://www.youtube.com/watch?v=NntY4NwhYuA
2) You've all heard the change in V8 Ferraris from 355 to 360 to 430 to 458. The fundamental frequency is getting lower despite the redline creeping up.
Favorite exhaust video: http://www.youtube.com/watch?v=_UWVxT7YcFw
There are probably lots of factors in exhaust sound besides engine capacity and isolating the banks, but in my experience it's clear that, other factors kept equal, bigger displacement = deeper and isolated banks = deeper.
The single M600 can could be isolated inside.
Jeff
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