[V8] squealing serp belt oddity

[Coleman, David]

I'm going to get the number off my belt tonight -- I'll betcha it's for
a 3.6 auto, not manual.



> -----Original Message-----
> From: Ron Wainwright [mailto:ron_01056 at yahoo.com]
> Sent: Monday, September 24, 2007 2:18 PM
> To: Ingo Rautenberg
> Cc: Coleman, David; v8 at audifans.com
> Subject: Re: [V8] squealing serp belt oddity
> 
> Very true Ingo...but Dave's got a 4.2..so the belt
> would be a 4.2 belt.
> The 3.6 Manuals, & Auto's have different belts.
> 
>  But I used a 3.6 Manual belt on George's 3.6 too 4.2
> swap & he isn't haveing any problems with belt squeal.
> 
>  Ron
> 
> --- Ingo Rautenberg <ingo.rautenberg at gmail.com> wrote:
> 
> > IMO there is obviously something that either isn't
> > aligned properly
> > (doubt it) or one of your accessories is putting a
> > severe drag
> > relative to everything else.  A/C clutch going/
> > compressor seizing?
> >
> >
> > PS:  You DO have the correct size belt, right?
> > There are two sizes -
> > I believe the automatic is bigger and the 5-speed is
> > shorter (forget
> > why) -- at least on the 5-speed.
> >
> > Ingo
> >
> > On Sep 24, 2007, at 12:51 PM, Coleman, David wrote:
> >
> > > SO - My '91 5-speed with 4.2 has been enduring a
> > squealing serpentine
> > > belt for several months.  In a nutshell:
> > >
> > > *       It started squealing only at idle, and
> > would go away with
> > > higher
> > > RPMs
> > >
> > > *       Broke under load, nursed back home,
> > replaced with new, still
> > > squealed
> > >
> > > *       Replaced the coil spring behind t-belt
> > cover with known good
> > > used; squealing stopped for a month or so
> > >
> > > *       Started squealing again, this time more
> > apparent with higher
> > > RPMs; nearly silent at idle.
> > >
> > > *       Replaced shock absorber / tensioner with
> > factory new; squeals
> > > like a mofo still.
> > >
> > >
> > >
> > > The shock tensioner is fully compressed (i.e.
> > can't make the belt any
> > > tighter), yet under load, I can watch from
> > underneath the belt walk
> > > back
> > > and forth across the lower idler pulley - like the
> > belt is just still
> > > too loose.
> > >
> > >
> > >
> > > Does anyone know if any of the pulleys (aside from
> > the harmonic
> > > balancer
> > > / crank) are different sizes from 3.6 to 4.2?
> > The 4.2 belt is way
> > > too
> > > big; the 3.6 belt is the one in question.
> > >
> > >
> > >
> > > If no one knows about the pulley sizes, perhaps
> > the Gates number
> > > for the
> > > next smaller size???
> > >
> > >
> > >
> > > Any ideas welcome!
> > >
> > >
> > >
> > > -DaveC.  (nice car except it's embarrassing to
> > drive)
> > >
> > >
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