Engines and/ or Exhaust Note Tuning
TL;DR: 1. Looking for an engine that fits a description ↓↓
2. Wondering if exhaust notes can basically be 'tuned' using a fan (the will spin with exhaust pressure and produce a tone) or if that's a bad idea and why
I tried to ask about this on another forum but there doesn't seem to be any interest there, so I thought I'd take a shot here.
Basically, if I were to do a build with an engine swap on a car, I'd want to do some sort of 450-600 hp drift car build with a high pitched exotic sounding exhaust note. (And I'd want to be able to daily it.) So I'll just say I like the sound of inline 5s [07k?], v10s [LFA], [Ferrari] Flat Plane Crank v8's [F355], and maybe a GM cross plane with 180 degree headers. So you get the idea.
Ofc if I were doing a project car, I wouldn't want to use an engine that's super expensive to repair (being that it'd be a project car and would likely break often) so finding an old exotic engine is pretty much out of the question as well as most euro engines like BMW or Mercedes... Unless it's something like an inline 5 that's originally 'cheap' and somewhat abundant within its own market. Also if I'd want to daily, it'd be nice to get around at least 16 mpg but thats not always realistic. So I was wondering if there is an engine that fits this description [exhaust note/sound, power tuning capabilities, not expensive maintenance, maybe mpg]
Assuming there's not here's my real topic
What if you could artificially add an overtone to your exhaust (without the sin of a speaker playing fake noise).... found these 2 gems
https://www.carthrottle.com/post/weoo82y/ "A Musician's Analysis of Engine Notes" - An article explaining engine sounds with overtones. I like engines with a fundamental closer to middle C or extremely pronounced overtones that reach the E or F above that (if you look at a piano.)
https://www.youtube.com/watch?v=FJUpV7-s0yk "Homemade Turbo Exhaust" - A video of a Pringles can with a fan on the end of it shoved on an exhaust played at (probably) 2x speed. Just for laughs ofc
"was a fan out of a small heater. Was hoping bearing could handle the heat but imploded at end of the video."
" slowed it down to what was probably the actual speed: https://vocaroo.com/i/s1aEMaYJDPLE "
So you may have noticed that the fan appeared to be some sort of metal fan with wide blades that was actually being pushed by exhaust gases. I'm going to make an assumption that that was the source of the humming above the exhaust... also with the pressure of the exhaust increasing and decreasing with engine rev speeds, so did the fan's rev speeds and the pitch of the fan's sound. So what if it's possible to tune the [sound of the] fan? Like changing the size, angle, and amount of blades to generate a pitch a certain interval above the fundamental exhaust note, and furthermore attempting allow it rise and fall parallel to the engine's revving notes (so that a specific interval can be maintained throughout the most of the rev range). And perhaps slipping it in before the resonator or something would allow it to sound more natural and more coherent with the engine, as well.
So let's say you do an engine swap with a nice 6cyl with a good fundamental... something that could produce a note "close" to an F1/Exotic sound with the right exhaust. Maybe like the old NSX engine (3l v6). If you could add an overtone a 5th (i guess), 6th, octave, or 10th above its fundamental, it could sound even more beautiful and perhaps exotic (between two tones produced, even more overtones can be brought out anyways). You'd probably need to find an exhaust set up that reduces rasp and brings out the higher notes/overtones to blend the tones of the fan and engine well, but I feel like this sort of idea has potential.
What do you think? Is this a bad idea or could it actually have potential? (coming from someone who doesn't know too much about cars in general) I need education and I'm basically looking for it in the forums. Thanks.
2. Wondering if exhaust notes can basically be 'tuned' using a fan (the will spin with exhaust pressure and produce a tone) or if that's a bad idea and why
I tried to ask about this on another forum but there doesn't seem to be any interest there, so I thought I'd take a shot here.
Basically, if I were to do a build with an engine swap on a car, I'd want to do some sort of 450-600 hp drift car build with a high pitched exotic sounding exhaust note. (And I'd want to be able to daily it.) So I'll just say I like the sound of inline 5s [07k?], v10s [LFA], [Ferrari] Flat Plane Crank v8's [F355], and maybe a GM cross plane with 180 degree headers. So you get the idea.
Ofc if I were doing a project car, I wouldn't want to use an engine that's super expensive to repair (being that it'd be a project car and would likely break often) so finding an old exotic engine is pretty much out of the question as well as most euro engines like BMW or Mercedes... Unless it's something like an inline 5 that's originally 'cheap' and somewhat abundant within its own market. Also if I'd want to daily, it'd be nice to get around at least 16 mpg but thats not always realistic. So I was wondering if there is an engine that fits this description [exhaust note/sound, power tuning capabilities, not expensive maintenance, maybe mpg]
Assuming there's not here's my real topic
What if you could artificially add an overtone to your exhaust (without the sin of a speaker playing fake noise).... found these 2 gems
https://www.carthrottle.com/post/weoo82y/ "A Musician's Analysis of Engine Notes" - An article explaining engine sounds with overtones. I like engines with a fundamental closer to middle C or extremely pronounced overtones that reach the E or F above that (if you look at a piano.)
https://www.youtube.com/watch?v=FJUpV7-s0yk "Homemade Turbo Exhaust" - A video of a Pringles can with a fan on the end of it shoved on an exhaust played at (probably) 2x speed. Just for laughs ofc"was a fan out of a small heater. Was hoping bearing could handle the heat but imploded at end of the video."
" slowed it down to what was probably the actual speed: https://vocaroo.com/i/s1aEMaYJDPLE "
So you may have noticed that the fan appeared to be some sort of metal fan with wide blades that was actually being pushed by exhaust gases. I'm going to make an assumption that that was the source of the humming above the exhaust... also with the pressure of the exhaust increasing and decreasing with engine rev speeds, so did the fan's rev speeds and the pitch of the fan's sound. So what if it's possible to tune the [sound of the] fan? Like changing the size, angle, and amount of blades to generate a pitch a certain interval above the fundamental exhaust note, and furthermore attempting allow it rise and fall parallel to the engine's revving notes (so that a specific interval can be maintained throughout the most of the rev range). And perhaps slipping it in before the resonator or something would allow it to sound more natural and more coherent with the engine, as well.
So let's say you do an engine swap with a nice 6cyl with a good fundamental... something that could produce a note "close" to an F1/Exotic sound with the right exhaust. Maybe like the old NSX engine (3l v6). If you could add an overtone a 5th (i guess), 6th, octave, or 10th above its fundamental, it could sound even more beautiful and perhaps exotic (between two tones produced, even more overtones can be brought out anyways). You'd probably need to find an exhaust set up that reduces rasp and brings out the higher notes/overtones to blend the tones of the fan and engine well, but I feel like this sort of idea has potential.
What do you think? Is this a bad idea or could it actually have potential? (coming from someone who doesn't know too much about cars in general) I need education and I'm basically looking for it in the forums. Thanks.
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