Diesel or Petrol?

[Scania]

Apologies guys, truck speak again...

And sound. A turbo sounds like it has flatulence but a supercharger just sounds horny and rude.

You need a bigger turbo matey!!

Can't really hear the turbo on my truck with the window open, but open the roof hatch and you can very much hear it, it sounds lovely in a way ,for example, my old Escort RS Turbo never did.

Drove a supercharged Sierra 4x4 years back,power engineering converted example, I don't recall it making any noticeable noise at all.....

Given most trucks are turbo diesels, I wonder why none - to my knowledge - are supercharged.....?

 

[Conanius]

With a supercharger surely the type makes a huge difference to the noise...

 

[Pabl0]

Twin scroll certainly can be heard!

 

[RedvGreen]

Twin scroll certainly can be heard!

Twin-scroll can be heard for sure. The N55 vs N54 differences are mainly due to throttle response and economy. The N54, a product of it's age/maturity, can be tuned far easier too.

Superchargers sound like a UFO with the right airbox fitted - brilliant if you ask me!

 

[Alibaba99]

Definitely other actual reasons. Do only diesels have innate exhaust pressure?

Forced induction works well on diesels primarily because you can use significant levels of boost with no danger of detonation, which would be a problem on petrol engines. They still suffer from some lag, though with the very small and efficient turbos used on modern car engines it's not a major problem.

Using a turbo on a diesel will actually increase the thermodynamic efficiency over ruuning the engine NA.

And sound. A turbo sounds like it has flatulence but a supercharger just sounds horny and rude.



I can't see me ever buying a diesel unless it was transport for work. It's just wrong.

EDIT: Sadly turbochargers are the future as they are certainly efficient.

Which noise from a turbo sounds flatulant? Interestingly, when Jaguar developed the first XK they could only allow the engine sound into the cabin on the NA V8. They couldn't stop the extremely annoying supercharger whine from dominating things.

 

[snitcher]

they say that petrol is cheaper but overall it is less economical. go for the diesel. before setting off let the car warm 5 minutes and then off you go.

 

[ubersonic]

Anybody mentioned getting an LPG one ? Best of both Worlds. Nice refined engine & 70p a litre.

Only downside is having to pay about £60 every two years for a bi-annual (actually tied to mileage but in most cases bi-annual) change of the LPG filter. Personally I would never consider diesel as a viable option while LPG is at it's current price point.

 

[86JR]

I would be happy with the Audi 4.2 V8 tdi.