[urq] 2b relocate Alternator 'Siren' Noise?

[fdekat]

Hllo Louis-ALain:

--- Louis-Alain Richard <larichard at plguide.com> wrote:
> Ok, then I learned something today. Thinking of it, it makes sense since
> incoming air is full of road dirt, and might be cleaner at the back of >
the alternator.

In reality, I think the answer is more practical. It's probably because it's
easy to make the pulley and fan as 0ne piece.  :-

> So, wrt your problem, siren noise, it can then be related to attachment
> method and not to the fan itself. 
I don't thjink so..

>Are you sure it's a fan noise, and not simply a mechanical noise that is
>transmitted/amplified via the new bracket

Here's why I don't thik so:
With a heavy glove on, I tred holding onto the alternator, and pushing and
pulling it and things like that, when it was running at teh RPM that makes
the noise. no changes.

But when I even lightly covered the air intakes on the back of the
alternator, there was a very noticable change in the sound.

So a clue in the direction, but no solution. Can't really run the alternator
without the cooling airflow, and doesn't explain why the noise seems to be
'alternator location dependant'. 

4K alternator is in a similar position, but no big noises from it..??

A side benifit though: Passengers think the noise is the turbo, and I don't
tell them any different..  :-)

=Frank=