[V8] squealing serp belt oddity

Mon Sep 24 13:02:36 PDT 2007

Is there an easy way to tell the pulleys (3.6, 4.2, manual, automatic)
apart?

I still have a pulley on my old motor; I'll have to run out to see if
it's still torqued down.

> -----Original Message-----
> From: Ron Wainwright [mailto:ron_01056 at yahoo.com]
> Sent: Monday, September 24, 2007 4:00 PM
> To: Coleman, David
> Cc: v8 at audifans.com
> Subject: Re: [V8] squealing serp belt oddity
> 
> So if he used the 3.6 pully from you'r old 3.6 motor
> than you need the Manual belt.
> Conti part#, 6K2433.
> 
>  Ron
> 
> --- "Coleman, David" <David.Coleman at blackrock.com>
> wrote:
> 
> > Alignment double and triple checked.   And every
> > pulley spins freely.
> >
> > Interesting note on the belt size... I believe I
> > have the right size, as
> > the first one I got was too big.  I thought that was
> > due to the crank
> > pulley size difference between 3.6 and 4.2.
> > Perhaps there's a smaller
> > one still, the one for the 5-speed?  Does that mean
> > there are three
> > different belt applications for the V8?
> >
> > Regarding the above, by the way, I believe the 3.6
> > crank pulley was used
> > when Keith swapped the 4.2 motor...
> >
> >
> >
> >
> >
> >
> >
> > > -----Original Message-----
> > > From: Ingo Rautenberg
> > [mailto:ingo.rautenberg at gmail.com]
> > > Sent: Monday, September 24, 2007 2:13 PM
> > > To: Coleman, David
> > > Cc: v8 at audifans.com
> > > Subject: Re: [V8] squealing serp belt oddity
> > >
> > > 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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