Alternator Electrical noise and Belts?

[Michael Gough]

I throw them on the drag strip at ~7500 RPM regularly, every time it's the
same story, I shift from second to third and the alt. light comes on. Maybe
I'm doing something wrong? I used to use the best Goodyear belt I could
find, but after wasting 20$ on one every time at the track, I've been just
putting on the cheapest POS one I can get. I buy them in bulk for like 4
bucks from the Autozone by the track.
If your alternator is 205k miles old, has never been rebuilt, and still
charges....damn!
It probably just has tired bearings, replace or rebuild and you'll be a
happy man. Didn't you drive it through the car wash and ruin the bearings? I
thought I remember that happening to you, maybe it was someone else.
Mike

> Two questions/issues,
>
> One, what kind of alternator belts are you guys using?
>  Iím on belt #4 in the last month, Iíve tried Conti
> -SF11, 2x866, Gates, Dayco, and some other truck stop
> brand.  I swear I go through this every two years, the
> last belt that went the distance was a Dayco.  I threw
> that at 6800 rmps in third gear last month.  Iíve
> verified the pulley is lined up, Any other brands Iím
> missing?
>
> Two, what causes alternator noise?  Iíve replaced my
> brushes and voltage regulator with no luck.  Do I just
> need a new one?  Mineís 205,000 miles old.  I realized
> itís the cause of all my electrical system noise when
> my O2 gauge went silent once the belt came off today.
> The gauge is grounded to the IM.
>
> Thanks!
>
>
> =====
> Jim Green
> '89 90tq 034EFI Stage II
> http://www.geocities.com/jeg1976/car_home.html
>
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