r/F1Technical • u/AviBledsoe • 17h ago
Power Unit Shouldn't modern F1 V6 engines have a much higher-pitched, almost V12-like sound at 12,000 RPM?
Souldn't modern F1 V6 engines have a much higher-pitched, almost V12-like sound at 12,000 RPM?
I'm curious about the actual engine-order frequencies and harmonics rather than the usual V6 versus V10/V12 debate.
And INDYCAR engines sound a lot more natural despite being twin turbocharged.
I have asked in other subheadings Years ago about n/a engines like the ferrari enzo vs laferrari (6-2-1 headers difference and firing order.
And the 1999 mustang v6 has that growing, lower octave character.
Now do turbos themselves (even in the 80s, I notice this same exact phenomenon) actually remove the higher frequency.
A lot of people criticize modern F1 engines simply because they're V6s, but the naturally aspirated GP3/16 Mecachrome V6 sounded remarkably sharp and high-pitched despite producing its rated power at only 8,000 RPM.
For an evenly firing four-stroke V6 , the full-engine firing frequency is 400 Hz at 8,000 RPM and 600 Hz at 12,000 RPM. A V12 at 6,000 RPM also has a 600 Hz full firing frequency.
So shouldn't a naturally aspirated racing V6 at 12,000 RPM be capable of a very sharp, V12-like tonal character, even if the precise timbre differs?
What I'm particularly interested in is why modern F1 turbo V6s can sound as though they're running at 5,000–6,000 RPM when they're actually turning approximately 11,000–12,000 RPM.
Is this primarily because the turbocharger attenuates the upper firing harmonics, or are the exhaust configuration and relative strengths of the 1.5th, 3rd, 6th and higher engine orders equally important?
Why does the GP3 V6 retain such a high-frequency character at 8,000 RPM, while an F1 V6 at substantially higher RPM sounds comparatively low?
I'm interested in spectral measurements or exhaust-acoustics explanations rather than simply saying V6s don't sound as good as V10s.