Timing Belt on Scirocco 16V

[verboten1 at gmail.com (Verboten1)]

any time i have heard them make noise is when they are too tight, so a
slight loosening will most likely make it go away

On 7/25/07, Dan Bubb <jdbubb@xxxxxxxxxxx> wrote:
>
> The twist 90? or 45? is a really half-assed test if you ask me.
> I believe the whirring sound is actually the teeth of the belt engaging
> the sprockets just slightly on the edge due to the belt being overly
> stretched.
> I would loosen the belt just enough that you don't hear any whirring sound
> when the engine is hot. With the engine hot, everything expands a little bit
> and tensions the belt somewhat tighter.
> HTH
> Dan
>
>
> From: "Janzen, Lawrence" <lwjanzen@xxxxxxxxxxx>
> To: <scirocco-l@xxxxxxxxxxxx>
> Sent: Wednesday, July 25, 2007 12:34 PM
> Subject: Timing Belt on Scirocco 16V
>
>
> I have just replaced the timing belt, drive belt tensioner roller and
> the 3 V-belts on my '87 Scirocco 16V.  After starting it, there was a
> hollow-whirring sound coming from the timing belt area.  Thinking it was
> the lower timing belt cover rubbing on the vibration damper, I took it
> all a part again. Nope, it wasn't the lower cover.  It turns to be the
> tension on the drive belt tensioner roller.  In the RB manual it states
> "On 8-valve engines, you should be able to twist the belt no more that
> 90 degrees. On PL(16-valve) engines, you should be able to twist the
> belt no more than 45 degrees."  If I run the timing belt set at 45
> degrees, the tensioner roller makes this hollow-whirring sound.  If I
> run the timing belt set to 90 degrees, this sound goes away and
> everything sounds normal.  Timing belt and all V-belts are all
> Continental and the roller is SKF.
>
> Has anyone had this problem before?  Is this normal?  Can I run a risk
> of having the timing belt set to 90 degrees?
>
> Larry
> '87 Scirocco 16V
>
>
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