Could it be the viscous coupling on the fan - assuming yours has one of
those?
Cheers, Fred
----- Original Message -----
From: "Jim Muller" <jimmuller@pop.mail.rcn.net>
To: <triumphs@autox.team.net>; <spitfires@autox.team.net>
Sent: Tuesday, May 21, 2002 8:38 PM
Subject: whistling belt???
> [Once more he dips into the wellspring of knowledge...]
>
> Something in my GT6 engine is whistling (or squealing) at a
> particular narrow range of rpms, from maybe 2500 to 3000. I would've
> guessed it to be the fan belt. In the past I've heard a similar
> squeal in my Spitfire, and either it has dimished over the years or
> I've grown used to it and no longer notice. Coming home from work in
> the GT6 today it seemed louder than it has in the recent past. The
> alternator is new so I doubt it is the alternator bearing. Could it
> be the waterpump? I've been told that too tight a belt would burn
> out the alternator bearing or the waterpump. I would have thought
> that a bad (or going so) bearing would squeal at all rmps, whereas a
> belt would resonate differently at different speeks. To my mind the
> belt is looser than I would have thought appropriate for previous
> cars. Still, I'm wondering - should I loosen it further or tighten
> it? What causes such a noise?
>
> Inquiring minds want to know. Inquiring ears just want silence. Old
> cars want to run without breaking.
>
> Tanks,
> --
> Jim Muller
> jimmuller@pop.rcn.com
> '80 Spitfire, '70 GT6+
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