[V8] Engine Noise?

[dsaad at icehouse.net]

>From my own car as the standard, you should change the bearing every second
t-belt job. Others on this list however have gone further with no problem. To
me, 120K miles on a sealed bearing is plenty though. I tend to replace them as a
service item - especially if they are hard to get to. I have also replace my
alternator and t-belt idlers even though they seemed fine. I have not replaced
the accessory belt idlers because they are easy to get to and replace when they
fail.

Dave


Quoting Kneale Brownson <knotnook at traverse.com>:

> Does this mean that it's worth doing the oil pump bearing if you're doing
> the timing belt?
>
> At 01:59 PM 11/3/2004 -0700, dsaad at icehouse.net wrote:
> >Someone already went through this - but the oil pump bearing goes bad, and
> it
> >causes a nasty rotating rumbling sound at idle. Mine went out around 110000
> >miles.
> >
> >It is expensive to replace - you basically have to do a timing belt job +
> the
> >labor and parts for the bearing - and the bearing was near $100 as I recall
> so
> >be sure to eliminate the other possibilities first. The bearing is easy to
> >change - once the timing belt is off. double check:
> >
> > - alternator bearings
> > - accessory belt idlers
> > - engine fan bearing (the same bearing as the oil pump bearing - as stated
> >before, buy the oil pump bearing for both uses as it is quite a bit
> cheaper)
> > - engine fan viscous clutch bearing
> > - timing belt idlers
> >
> >Dave
> >
> >Quoting AWHdcny at aol.com:
> >
> >> I am also experiencing the same noise from the engine with about the same
> >> conditions.  I have a '93 V8Q, 150,000 miles.  This noise is  rotational
> and
> >> very elusive as to the source.  I am also wondering  what is the cause
> given
> >> that, the obvious culprits have been ruled out on my  vehicle.  It is at
> >> Audi
> >> Connection presently for some  upgrades and to check out this 'noise'.
> Any
> >> ideas
> >> or solutions would also  be appreciated.
> >>
> >> Allan Holland
> >> '93 Audi V8Q
> >> '90 VW Corrado
> >> '73 MB 450SEL
> >> '91 Suzuki Samurai
> >>
> >>
> >>
> >> Date: Wed, 3 Nov 2004 00:21:00 -0800
> >> From: Frankie Rossi  <frankie.rossi at gmail.com>
> >> Subject: [V8] Engine Noise?
> >> To:  V8 at audifans.com
> >> Message-ID:  <da34ddd04110300214041ec80 at mail.gmail.com>
> >> Content-Type: text/plain;  charset=US-ASCII
> >>
> >> I get this weird noise from the front of the engine that  sounds almost
> >> like a belt is getting tired but not quite that. It doesnt do  it when
> >> the engine is cold, but does when it is warm and or has been ran  for
> >> awhile. Also i can only hear it at low speed, it seems to either  go
> >> away at higher speeds (above 1500RPM) or is drowned out by  the
> >> engine... Its not the lifters because i can hear that on occasion  and
> >> that goes away for the rest of the day after the morning start.  This
> >> noise sounds like a "chush chush " with a touch of "clank" in it  and
> >> sounds like its coming from the front passenger side of the  main
> >> engine block.
> >>
> >> Any ideas?
> >>
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> >>
> >
> >
> >
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> >contributions welcome!
>
>