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

[Brandon Rogers]

My experience - and those who have the whining AFAIK - is when you use the
2Bennet Alternator Re-location Bracket which is mounted under the A/C
compressor.  If you ditch A/C and use factory brackets I've never heard of
any issues.  

How long til she is ready to hit the road?

Brandon


-----Original Message-----
From: Mike Sylvester [mailto:mike at urq20v.com] 
Sent: Monday, September 14, 2009 11:22 AM
To: Louis-Alain Richard
Cc: 'Brandon Rogers'; 'fdekat'; urq at audifans.com
Subject: RE: [urq] 2b relocate Alternator 'Siren' Noise?


I started my engine (3b) for the 1st time yesterday and I didn't get any
noise from my driver's side mounted alt.  I'm using the alt and bracket from
a 7A.

Mike

www.urq20v.com

> -------- Original Message --------
> Subject: Re: [urq] 2b relocate Alternator 'Siren' Noise?
> From: Louis-Alain Richard <larichard at plguide.com>
> Date: Wed, September 02, 2009 1:27 pm
> To: "'Brandon Rogers'" <brogers at terrix.com>, "'fdekat'" 
> <fdekat at sentex.net>, <urq at audifans.com>
> 
> 
> Quick questions :
> 
> - Isn't the urQ alternator a reversed cooling flow unit (from rear 
> toward front)?
> - Do you have the noise with the special urQ fan, the one with the 
> blanked surface ?
> 
> Louis-Alain
> 
>  
> 
> -----Message d'origine-----
> De : urq-bounces at audifans.com [mailto:urq-bounces at audifans.com] De la 
> part de Brandon Rogers Envoyé : 2 septembre 2009 11:47
> À : 'fdekat'; urq at audifans.com
> Objet : Re: [urq] 2b relocate Alternator 'Siren' Noise?
> 
> So it sounds like you are getting it, too, yes?  It was loud on my car 
> - drowned out the engine noise.  I never solved it- we figured out it 
> was coming from the alternator "fan" - not sure why it would siren 
> there but not in stock location - I'm thinking due to proximity (and 
> only partly shielded
> by) the valence.  But I don't know.  So yeah - never found a solution that
> involved keeping that part.  I ended up working with Apikol to design a
> bigger intercooler that allowed the alternator to stay in stock
location....
> 
> Keep us posted -
> 
> Brandon
> 
> -----Original Message-----
> From: urq-bounces at audifans.com [mailto:urq-bounces at audifans.com] On 
> Behalf Of fdekat
> Sent: Wednesday, September 02, 2009 3:33 AM
> To: urq at audifans.com
> Subject: [urq] 2b relocate Alternator 'Siren' Noise?
> 
> 
> 
> Say...
> 
> Did anyone that has the 2B alternator 'relocation kit' (that relocates 
> to below the AC compressor) ever figure out the 'siren noise'
> 
> I think I remember someone saying that it was making a 'siren' noise, 
> and may be caused by the proximity of the alternator to 'something'.
> 
> There is a fair similarity between the construction of a mechanical 
> siren, and the structure of the alternator.
> 
> I did find that if I covered the air intake on the rear of the 
> alternator when it was running, there was a significan reduction in 
> the 'siren' sound.
> 
> I was thinkning next of installing the plastic 'air duct' that come on 
> some 5Kt alternators, to see if that makes any difference, but was 
> wondering if any had any other sucess or tricks to help reduce the 
> noise?
> 
> -Frank de Kat- _______________________________________________
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