Looking for crankshaft pully with no AC belt !

[rob hod]

    I don't think its a question of balance in the rotational sense, as you
would apply to a roadwheel or suchlike. What is pertinent is that the
balancer has sufficient mass to buffer torsional harmonics from the firing
impulses.  Without sufficient mass the balancer (or pulley if you want to
regard it in simple terms) can't do its job and at certain revs you run the
risk of setting up a standing wave within your crankshaft at some spurious
multiple of the rpm. Ping!, your crankshaft fractures and you 'll wish you
hadn't sacrificed smoothness for power.

rob
----- Original Message ----- > --__--__--
>
> Message: 18
> Date: Mon, 15 Oct 2001 13:49:38 -0700 (PDT)
> From: Jim Green <jeg1976 at yahoo.com>
> Subject: Re: Looking for crankshaft pully with no AC belt !
> To: SIMON HOLTBY <sholtby at yahoo.co.uk>
> Cc: quattro at audifans.com
>
> I don't think so, I was under the impression the I-5
> was internally balanced, thus avoiding the need for
> matching all the components like harmonic balancers
> and flywheels.  I didn't design the thing so I could
> be wrong.  Anyone know the final word?
> Jim
> --- SIMON HOLTBY <sholtby at yahoo.co.uk> wrote:
> > Isnt each pully specific to its crankshaft? Hence
> > you would need to change
> > crank and pully. Think they are balanced together.
> >
> > Simon
> >
> >
> >
> >
> >  --- Eyvind Spangen <eyvind.spangen at c2i.net> wrote:
> > > On Sun, 14 Oct 2001
> > 15:24:41 -0700 (PDT), you wrote:
> > >
> > > >No, I saw it, I was just curious if the made an
> > early
> > > >I-5 without AC that may have had a skinnier
> > harmonic
> > > >balancer on it.  All I need is about 1/2" more
> > room to
> > >
> > > All the 10v I5 engines except the later (post-91)
> > 2.3NA engines use
> > > the same pulley..
> > >
> > > Maybe you could use a pulley from a 91-> euro Audi
> > 80 or 100 2.3E?
> > > They used a single, wide belt for everything, that
> > pulley should be
> > > narrower than the 3-belt regular pulley.. But then
> > again, you've to
> > > import one from Europe..
> > >
> > > --
> > > Regards,
> > > ES
> > >
> > >
> >
> >
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