"Dusty Ventures" (dustyventures)
11/08/2013 at 20:35 • Filed to: leicesterbait
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"Dusty Ventures" (dustyventures)
11/08/2013 at 20:35 • Filed to: leicesterbait | 2
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His Stigness
> Dusty Ventures
11/08/2013 at 20:55 |
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Lol what the hell did I just watch?
Oh and question about rally cars: why do they all sound pretty much the same with the "blat blat" and the backfiring and the spitting of flames.
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Dusty Ventures
> His Stigness
11/08/2013 at 21:30 |
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They only sound the same to the untrained ear. They're similar because they tend to be the same size engines putting out approximately the same horsepower, but if you listen they're definitely different. The five cylinder Quattro for example has one of the most distinctive (and to my ear one of the best) engine sounds in all of rally. Speaking more modern the boxer four of the Subaru carries its traditional burble, unlike the engines of Mitsubishi , which tend to have a harsher snapping sound to them. Also normally (though not always) the Subarus chirp when the driver gets off the gas while the Mitsubishi pops and crackles. On the WRC level the Fiesta is higher pitched than the older 2.0L cars (Subaru, Mitsu), it does sound a lot like the DS3 , but even there you can hear a slight difference. And the Mini's raspy note is the most distinctive engine of the modern era.
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His Stigness
> Dusty Ventures
11/08/2013 at 21:42 |
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The Quattro sounds pretty sick, and super unique. It sounds like a rally car but it doesn't sound like anything else, it's really cool.
But I was just wondering why they sound roughly the same: super loud, backfire a lot and spit flames. Things like that. Do rally cars use an open and free exhaust where there is no catalytic converter, no muffler, no resonator?
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Dusty Ventures
> His Stigness
11/08/2013 at 22:11 |
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They sound roughly the same because they're all the same size engine (formerly 2.0, now 1.6) with the same size turbos and same size engine restrictors. They do have cats but the cats are mounted at the very back of the exhaust. When you look in the end of the exhaust and see glowing that's the cat.
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His Stigness
> Dusty Ventures
11/08/2013 at 22:54 |
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Interesting. Do the cars run super rich?
Fun fact about glowing cats though and smogging. Shady techs, or asshole customers will do something called "super heating the cat" where they create a misfire, which dumps raw fuel into the exhaust and it ignites in the car, heating way more than it ever would. It gets hot enough that it will glow and the car will pass where it otherwise would have failed. It also destroys the cat in the process and after the smog test the cat no longer works, thus making your car a gross polluter.
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Dusty Ventures
> His Stigness
11/08/2013 at 23:09 |
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The cars do run a bit rich, but not to crazy levels. That said they do typically run on about 110 octane. Cats are swapped out after every race, so long term damage isn't a huge concern.
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His Stigness
> Dusty Ventures
11/08/2013 at 23:57 |
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Ah then I would suspect that the higher octane and rich mixture is what causes them to get heated, and then changed after every race because they get damaged.