s15 helicopter sound

[FacesS15]

ey,

every so often whilst on the freeway at a steady speed, the engine makes a slow low frequency whirring/helicopter sound... initially i thought it might be a belt but someone told me it may be a problem with a bearing...

any suggestions?

[MikeS14]

Not sure but when you go over a bridge it sometimes makes a sound like that.

[RICEY]

Could be your tyres..

Run your hands over them and feel for scalloping/uneven wear across the tyre.

[evil1]

i dunno but ive heard that vct sometimes go in them?

[FacesS15]

yeah funny...

changed the wheels to stock last week cause of wear, still makes the sound.

sort of like a repetitive weak rev

[Alt_F4]

Does it make the noise when your next to a wall?
Sounds like tyre/road noise to me.

Must be an improvement to the truck engine noise from between the strut towers surely :lol:

[FacesS15]

dw bout it... its not coming from the road or the tires.
Its the engine
I used the freeway as an example because it seems to only do it when in a high gear around 2.5k-3.5k

[Fukushima]

6 speed box?

[RICEY]

Wheel bearings? When theres no traffic around and its making the noise, steer left to right and see if the noise changes or goes quiet as youre swerving.

[beefcake]

sure its not the pulsing thumping noise that so many cars with decent exhaust systems get as your cruising along.
Its hard to explain but it definitely sounds chopper ish , and if it is that then nothing to be worried about at all.
May have to get a mechanicly minded person to go for a drive on the weekend with you .

Also timing chain guide maybee yeh nah ?

[FacesS15]

cheers guys..

doesnt really matter now, crashed this morning gonna be in the shop for a while.

[RICEY]

oooooooooooooooooooook then.

[stormtrooper]

Crashed it swerving side to side listening for wheel bearings by any chance? He forgot to mention... make sure road is dry...

[Patrick]

harmonics?