[V8] Rattling 3.6

[Ingo Rautenberg]

Alright, Guys.  I'll bite.  What "block" are you referring to? PN#?

-Ingo
Two V8's - no rattling

----- Original Message ----- 
From: "Buchholz, Steven" <Steven.Buchholz at kla-tencor.com>
To: <v8 at audifans.com>
Sent: Tuesday, January 04, 2005 3:42 PM
Subject: RE: [V8] Rattling 3.6


... if you suspect any issues with the cam belt tensioning mechanism I
would say that it would be folly to let something sit for 30 thousand
miles ... it is not that difficult a task to remove the cover for the
"rive gauche" (left cylinder bank) and check the length of the tensioner
and have a general look in there.  I got to swap an engine in #2 due to
a timing belt failure ... still don't know why, the engine had around 6K
miles since a TB R&R for which I have a receipt from the PO) ... and I
consider myself to have been extremely lucky that I did not have a
similar issue on #344 ... the tensioning mechanism broke due to that
"block" wearing out ... if I had an automatic engine (without the
locating pins near the cam pulley) I'm sure the belt would have jumped
one or more teeth by the time I knew there was a problem ...

... of course if it is simply a bearing on a pulley it might be
something you can put up with for 30K ... but only if you knew that's
what it was ...

Steve B
San Jose, CA (USA)
>
> I've also heard there is a "block" that can get worn. It is
> recommended with
> the belt swap, and has been found to cause a similar sound.
> I'd probably
> just wait another 30K, and replace everything with the next belt job.
>
> >I had similar sounds/symptoms and it ended up being the oil
> pump drive
> >bearing.
> > You have to pull the timing belt to replace it.
> > This is the same bearing as the viscous fan bearing that
> mounts to the
> > right
> > timing belt cover.
> >
> > Dave
>
>
>   Now on to an annoying rattle.  When the engine is cold it
> >> idles
> >> as quiet as can be.  When it is fully warmed up (and idle
> oil pressure
> >> drops
> >> to about 2 bar) it sounds like a diesel when you open the hood.
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