Big Diesel 4x4s. Noise?

[C.slicker]

Why do they make such a sucking noise?

Sounds like a massive fan...?

 

[vincent]

because it was a range rover?

 

[Waitey]

Mix of the turbo's and heavily sound deadened engine bay.

 

[Russ_16v]

actually its probably because most have viscous fans,which run all the time,and will spin up with engine revs and vairing temps

 

[C.slicker]

Oh right ok.

Why do all cars not have them? Or is it just larger lumps that need them?

Sam

 

[Russ_16v]

it depends on alot of things mate,older cars like seirra xr4x4s had them too,the easiest way of exlpaining is if the vehicle is rwd/4wd the engine is mounted so it runs down the car as apposed to across it right? well the fan works off a viscous coupling attched on the end of the engine,and blows directly onto the rad,its uaually on bigger older stuff,with bigger engines and lorrys use them too

 

[TomTom]

Turbo whistle

 

[C.slicker]

If it was turbo whistle why would an engine like the 3.0 twin turbo'd bimmer lump do it yet a 2.7 TD in a RRS does?

Btw Tommy boy - any luck with that key?

Thanks

Sam