> You forgot the exhaust system! Gotta take out the carefully designed 
> exhaust and replace it with a baked bean tin so it *sounds* like it has a 
> powerful engine too! ;-)

but the original spec exhaust is made for low noise and efficiency innit, i 
got it tuned for max power now and it gotta be loud for that hannit

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scott wrote:
>> You forgot the exhaust system! Gotta take out the carefully designed 
>> exhaust and replace it with a baked bean tin so it *sounds* like it 
>> has a powerful engine too! ;-)
> 
> but the original spec exhaust is made for low noise and efficiency 
> innit, i got it tuned for max power now and it gotta be loud for that 
> hannit

Yes! Because we all know, making your car sound like a 2-stroke 
motorbike gives it the power-to-weight ratio of a 2-stroke motorbike! ;-)

Heh, reminds me of one of our local shops. We went in there to buy a 
replacement battery. While they do sell those, most of their range is... 
well let me put it this way. They sell allow wheels. Bucket seats. They 
had a "rally" stereo system on display. And they also sell panels of 
LEDs that flash. (?!) They don't do anything, they just look high-tech.

That store went bankrupt a few months ago...

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scott wrote:

> 
> but the original spec exhaust is made for low noise and efficiency 
> innit, i got it tuned for max power now and it gotta be loud for that 
> hannit
> 

It's crude, but I call them "Fart pipes"

Though a decent tuned exhaust does sound nice ...

But sticking a tailpipe with the diameter of a coffee can on your car 
does nothing, but make your car sound like rolling flatulence.

And, someone once said if your car is loud, you're not getting the most 
performance.

And whatever you do, don't get me started on Harley Davidson motorcycles.

-- 
~Mike

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Mike Raiford wrote:

> And, someone once said if your car is loud, you're not getting the most 
> performance.
> 
> And whatever you do, don't get me started on Harley Davidson motorcycles.

I'm still puzzled about the Race of Champions. They raced several 
designs of car which seemed to be using *external combustion* to propell 
themselves, rather than the more traditional *internal combustion*. (As 
evidenced by the huge flashes and bangs as they raced round the track.)

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> I'm still puzzled about the Race of Champions. They raced several designs 
> of car which seemed to be using *external combustion* to propell 
> themselves, rather than the more traditional *internal combustion*. (As 
> evidenced by the huge flashes and bangs as they raced round the track.)

That's quite common on race-tuned carburetor-engined cars, under certain 
circumstances they simply pour so much fuel into the engine that some of it 
goes unburnt through the exhaust system and ignites once the exhaust 
mixtures mixes with enough oxygen in the atmosphere.

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scott wrote:
>> I'm still puzzled about the Race of Champions. They raced several 
>> designs of car which seemed to be using *external combustion* to 
>> propell themselves, rather than the more traditional *internal 
>> combustion*. (As evidenced by the huge flashes and bangs as they raced 
>> round the track.)
> 
> That's quite common on race-tuned carburetor-engined cars, under certain 
> circumstances they simply pour so much fuel into the engine that some of 
> it goes unburnt through the exhaust system and ignites once the exhaust 
> mixtures mixes with enough oxygen in the atmosphere.

You would think, though, that if that fuel had burned inside the engine, 
it would deliver more power. And since the goal of any race-tuned engine 
is to produce maximum power......

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> And, someone once said if your car is loud, you're not getting the most 
> performance.

Not sure how true that is, formula 1 cars sound painfully loud yet the 
clever bods there so far have not come up with a way to make them quieter 
and generate more power at the same time...

Also I guess the silencer in your road-car exhaust system sucks a bit of 
power (the engine has to push harder to push the exhaust gasses through it), 
removing it should make your car louder and a bit faster.

Maybe someone could find a way to convert the sound energy from an engine 
into mechanical or electrical energy...

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scott wrote:
>> And, someone once said if your car is loud, you're not getting the 
>> most performance.
> 
> Not sure how true that is, formula 1 cars sound painfully loud yet the 
> clever bods there so far have not come up with a way to make them 
> quieter and generate more power at the same time...

Hehe... All the classic cars rush past sounding like a pack of angry 
bees, and then an F1 car comes out, sounding like an angry mosquito.

There's something deeply amusing about an angry but tiny animal...

> Also I guess the silencer in your road-car exhaust system sucks a bit of 
> power (the engine has to push harder to push the exhaust gasses through 
> it), removing it should make your car louder and a bit faster.

I don't know about that - I tried driving my car with no silencer, and 
it was *actually impossible* to exceed about 25 MPH. The car simply 
would not accelerate, even on the flat.

(OTOH, it was a fairly old car. But normally it would happily to 90 or so.)

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> You would think, though, that if that fuel had burned inside the engine, 
> it would deliver more power. And since the goal of any race-tuned engine 
> is to produce maximum power......

No, there is a limit to how much can burn inside the cylinder, it's better 
to dump in slightly above this amount rather than slightly below it.  Of 
course modern engines can control electronically the amount of fuel way more 
accurately, and especially in road cars you certainly don't want to be 
wasting fuel out the back!

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> Hehe... All the classic cars rush past sounding like a pack of angry bees, 
> and then an F1 car comes out, sounding like an angry mosquito.

Something to do with the F1 car engine rotating at 3x the speed of the 
classic cars.

> I don't know about that - I tried driving my car with no silencer, and it 
> was *actually impossible* to exceed about 25 MPH. The car simply would not 
> accelerate, even on the flat.

OK, so maybe you need to redesign the other parts of the exhaust system that 
were designed with the silencer in mind.  But there's a reason why race cars 
don't have silencers.

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