Why inline 4 with similar CC and rpm Rev sound different?
Posted by ilycrst@reddit | askcarguys | View on Reddit | 6 comments
Like Honda s2000 and hayabusa. they both bellow 2L, Rev close to 10k rpm, hayabusa only use 1.3:1 bore stroke ratio unlike other superbike with 1.5:1. Why its sound so different?
United-Alternative95@reddit
What? They are not similar in size and not similar in revs.
ilycrst@reddit (OP)
Yea theres like 700cc difference in displacement, but they still a small machine yet the difference so big like the sound not even close. The s2000 sounds more like inline 6 jdm car
United-Alternative95@reddit
700cc and 2000rpm makes a big diffrence, and the s2000 sounds nothing like a 6 cyl.
YeahIGotNuthin@reddit
They are entirely different engines, with almost nothing in common.
The Honda car engine has over 1-1/2 times the displacement of the Hayabusa engine and makes peak power at about 8,300 RPM on its way to a 9,000 RPM redline.
The Hayabusa engine has 2/3 the displacement of the car engine and makes its peak power higher than the car engine can ever even go. And the Hayabusa will rev to 11,000 RPM.
They are as different as chalk and cheese.
ilycrst@reddit (OP)
I mean like on a bike, 250cc 4 cylinder at 10k rpm Will sound kinda like hayabusa, and 600cc, and 1L. But then s2000 with 1.9L sounds like from other world nothing like 4 cylinder on a bike. Its more like a brap grougle chaotic sound rather than smooth drone low bass sound from an inline 4
YeahIGotNuthin@reddit
No, a 250cc 4-cyl will sound absolutely nothing at all like a Hayabusa, which sounds very different from a 600cc bike (and even two different models of 600cc 4-cyl bikes might sound nothing alike.)
You will want to read up on why engines sound like they do. It has a lot to do with BMEP, valve size and valve timing, compression ratio, port geometry, header length...