So you lot say you can't make diesel sound great watch

[ips24]

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[AMGeed]

The first 3 sounded terrible. The Merc was OK (I suspect not even a diesel), back to a horrible BMW and I gave up.

I wonder how the emissions are on a straight piped diesel at MOT time?

 

[star]

Sorry to say, but the merc sounded like a wet fart on driveby. Not for me.

 

[ips24]

Boring

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[ips24]

Merc

 

[ips24]

That Mercedes sounds amazing that's exactly how I want mine to sound with a big whoosh from the turbo and dump valve

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[daveenty]

The only good sounding diesel engine was the Detroit 2 stroke, at least as far as I'm concerned.

 

[LostKiwi]

That Mercedes sounds amazing that's exactly how I want mine to sound with a big whoosh from the turbo and dump valve

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Dump valves don't work on diesels. If you knew anything about what a dump valve does you'd know that.

So here's what it does and why it won't work.

On a petrol car when the engine is on full boost and the throttle is closed the turbo continues to try and pump air. This needs to be released to prevent the turbo stalling (which on large turbos can cause failure). The whole reason the air needs to be released is that when the throttle is closed a flap closes in the inlet (petrol only).

A turbo has no throttle plate blocking the inlet so there is no need to vent (or dump) excess inlet pressure. With no excess inlet pressure you get no whoosh.
A petrol engine controls engine speed by limiting air then adjusting fuel to suit. A diesel engine works by solely reducing fuel.

 

[AMGeed]

That Mercedes sounds amazing that's exactly how I want mine to sound with a big whoosh from the turbo and dump valve

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With a 4 pot 200 cdi, its not going to happen, sorry to say.

 

[ips24]

Well how do all these diesels on YouTube get that woosh and choo choo noise when they accelerate thats what i want

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[LostKiwi]

Yours will never sound like any of them for one simple reason - they are all medium to large capacity engines with 5+ cylinders and not a little 4 pot.

 

[John Laidlaw]

Buy a Maserati Ghibli and you’ve a chance

 

[AMGeed]

Buy a Maserati Ghibli and you’ve a chance

Or an Impreza or a Cossie or Nissan GTR

 

[LostKiwi]

No matter what you do it will never sound as good as these:
5 cylinders:

6 cylinders:

8 cylinders:

12 cylinders:

No cylinders:

 

[star]

Dump valves don't work on diesels. If you knew anything about what a dump valve does you'd know that.

So here's what it does and why it won't work.

On a petrol car when the engine is on full boost and the throttle is closed the turbo continues to try and pump air. This needs to be released to prevent the turbo stalling (which on large turbos can cause failure). The whole reason the air needs to be released is that when the throttle is closed a flap closes in the inlet (petrol only).

A turbo has no throttle plate blocking the inlet so there is no need to vent (or dump) excess inlet pressure. With no excess inlet pressure you get no whoosh.
A petrol engine controls engine speed by limiting air then adjusting fuel to suit. A diesel engine works by solely reducing fuel.

651 diesels have a throttle flap.

 

[Tony Dyson]

The thread reminds me of when as kids we used to tape card, from mainly empty cigarette packets unlike the playing cards in the video, to our bike frames to catch the wheel spokes as we rode along to sound like motor bikes.

 

[LostKiwi]

651 diesels have a throttle flap.

Yes there are a few newer ones are an exception.

 

[Dean Fletcher]

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I thought the Volvo at the start sounded the best

 

[LostKiwi]

I thought the Volvo at the start sounded the best

They do sound great. 5 cylinders have a very unique sound.
I like that Mazda too, in a totally different way.

 

[keefysher]

Well how do all these diesels on YouTube get that woosh and choo choo noise when they accelerate thats what i want

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Get a train??? The Flying Scotsman is at Swanage this week, you could pop down and put an offer in?