[V8] New problem - v8 tb

Jason Wilkerson wilke_jb at yahoo.com
Tue Oct 27 09:01:25 PDT 2009 

It is rubbing at 2. Without touching the belt there is maybe 1/16th of an inch between the belt and point 2.  I know that it would be hard for the pump to have tilt - but that was my point, since it is a rebuilt pump, I assume that they have to bore out the housing, put a bushing or a larger shaft in it.  Either way it has to be re-drilled and could be off a fraction of a degree, and my experience with belt drives is that if it is a flat belt, without being directed will not take very much mis alignment to make it run un-true.  I know the belt can't come off because of the guides on the idlers, that isn't what I'm worried about, it is just the rubbing and I don't want the noise to come back.  BTW, you must have a 5spd - I noticed the extra pin on the passengers side cover - to keep the belt on in hard downshifts!  Must be fun, I'm jelous.  Thanks again.

--- On Tue, 10/27/09, D Morralee <superdaveski at hotmail.com> wrote:

> From: D Morralee <superdaveski at hotmail.com>
> Subject: RE: [V8] New problem - v8 tb
> To: wilke_jb at yahoo.com
> Date: Tuesday, October 27, 2009, 11:40 AM
> 
> 
> 
> 
>  
> hmm . First of all it would be very hard for the pump to
> have any tilt to the roller ( Unless it is built that way )
> It too bad you don't have the old pump to
> make a comparision to . When you rotate the engine
> does it rub. See picture , is it rubbing at point 1,
> 2 , 3 ? 
> 
> 1 would be the water pump caseing
> 
> 1 & 3 would be the actual head .
> 
>  
> 
> In my opinion a very light rub wouldn't be the end of
> the world , as that T Belt cover can be taken off
> to inspect every once in a while ... this way you can keep
> an eye on it. If you cut a chunk out of whatever, so
> the belt doesn't rub ... make sure that the new surface
> is very smooth.  
> 
>  
> 
> see attached 
>  
> > Date: Tue, 27 Oct 2009 07:50:11 -0700
> > From: wilke_jb at yahoo.com
> > Subject: RE: [V8] New problem - v8 tb
> > To: superdaveski at hotmail.com; v8 at audifans.com
> > 
> > Dave,
> > It looks like your belt rides the same way mine does.
> I know the 'lips' on the rollers keep the belt from
> riding back too far. But my point of misalignment was about
> the actual roller or waterpump being tilted, for lack of a
> better term. What I mean by this is if the roller is cocked
> it will cause the belt to want to ride one way or another. I
> wouldn't even be worried, but it looks like the belt has
> done some VERY slight rubbing in the area directly above the
> damper where the belt crosses over the raised flange on the
> water pump. I was actually thinking about grinding that area
> back slightly, as it is not part that covers the water
> impeller, it is just a dust cover to complete the back side
> of the TB cover. I wish I could take your picture and point
> to the area but I'm not that good. Thanks again for the
> advice and picture.
> > 
> > --- On Tue, 10/27/09, D Morralee
> <superdaveski at hotmail.com> wrote:
> > 
> > > From: D Morralee
> <superdaveski at hotmail.com>
> > > Subject: RE: [V8] New problem - v8 tb
> > > To: wilke_jb at yahoo.com
> > > Date: Tuesday, October 27, 2009, 10:29 AM
> > > 
> > > 
> > > 
> > > 
> > > 
> > > okay I had a look at the picture of my engine and
> have an
> > > updated of thoughts . 
> > > 
> > >  
> > > 
> > > The water pump ( pulley ) isn't the problem
> because it
> > > doesn't do any fore or aft alignment to the
> actual belt
> > > . The two Idler pulleys ( passenger side of
> engine ) are
> > > what provides the fore aft alignment of the belt
> at the Pass
> > > side Cam belt  . If you look at the picture
> you can see
> > > that my belt is also more to the aft of the Cam
> pullies . In
> > > the picture you can't see the crankshaft
> sprocket ...but
> > > I believe this also provides some sort of
> alignment .
> > > 
> > >  
> > > 
> > > questions
> > > 
> > > >have you rotated the engine with the T Belt
> on  ?
> > > 
> > > > is the belt hanging over the aft side of the
> Cam
> > > pullies ? 
> > > 
> > >  
> > > 
> > >  
> > > 
> > >  
> > > 
> > > > Date: Tue, 27 Oct 2009 05:56:00 -0700
> > > > From: wilke_jb at yahoo.com
> > > > Subject: RE: [V8] New problem - v8 tb
> > > > To: superdaveski at hotmail.com;
> v8 at audifans.com
> > > > 
> > > > I'm not sure what you mean by 'line
> up'? I
> > > don't have the old water pump as it got
> thrown away. If
> > > I were to measure it I'm not sure how I would
> do it? My
> > > thoughts are that it wouldn't take much
> mis-alignment to
> > > make the belt not run true. Let me know what to
> measure and
> > > I will. Thanks for the fast reply - you guys are
> great.
> > > > 
> > > > --- On Tue, 10/27/09, D Morralee
> > > <superdaveski at hotmail.com> wrote:
> > > > 
> > > > > From: D Morralee
> > > <superdaveski at hotmail.com>
> > > > > Subject: RE: [V8] New problem - v8 tb
> > > > > To: wilke_jb at yahoo.com
> > > > > Date: Tuesday, October 27, 2009, 8:47
> AM
> > > > > 
> > > > > 
> > > > > 
> > > > > 
> > > > > 
> > > > > Jason 
> > > > > 
> > > > >  
> > > > > 
> > > > > have you manually rotated the
> engine to see
> > > if it will
> > > > > align up ? Have you taken mesurements
> of the
> > > new and
> > > > > old water pump ? 
> > > > > 
> > > > > cheers superdave 
> > > > >  
> > > > > > Date: Tue, 27 Oct 2009 05:41:16
> -0700
> > > > > > From: wilke_jb at yahoo.com
> > > > > > To: v8 at audifans.com
> > > > > > Subject: [V8] New problem - v8 tb
> > > > > > 
> > > > > > Ok, new problem, sorry. Still
> working on the
> > > v6, just
> > > > > waiting on the service manual to
> arrive. Anyway,
> > > On the v8q
> > > > > - did a timing belt service, all
> rollers,
> > > waterpump, conti
> > > > > belt. Would have a 'slap' for
> lack of a
> > > better term,
> > > > > at various times. Took it all back
> apart,
> > > replaced damper,
> > > > > replaced belt with OE audi belt. Slap
> seems to
> > > have gone
> > > > > away, but before I buttoned it up, I
> noticed that
> > > the belt
> > > > > rides toward the back of the cam
> pulleys? I know
> > > this
> > > > > because you can see the shiny part in
> the front
> > > where the
> > > > > old belt ran for 60k. I assume it is a
> > > mis-alignment of an
> > > > > idler pulley and I'm thinking it
> may be
> > > causing the
> > > > > noise because it looks like it may be
> hitting the
> > > water pump
> > > > > housing in one place. I tried checking
> any pulley
> > > or
> > > > > mounting surface for wear, but
> can't find any
> > > problems.
> > > > > I also bought a rebuilt audi water
> pump, could
> > > they have
> > > > > bored the shaft wrong during re-build?
> Any BTDT?
> > > Thanks
> > > > > again.
> > > > > > 
> > > > > > 
> > > > > > 
> > > > > >
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