Timing belt ?

[Tony Hoffman]

No, I've never heard the valves bending. I worked at a shop, and never had a
customer say they heard it either. As the sound of combustion explosion is
pretty loud, and you barely hear it, I doubt you would hear this sound. And,
it happens nearly instantly. Even at 600 RPM that's 100 revolutions per
second. Pretty quick, if you ask me. They only bend once, the first time
there is interferance. After that, it's a "free-wheeling" engine :(

I've seen a couple of cars jump a tooth or two and loose power, only to have
run for a while afterwards. In the most extreme case, the customer said it
was like that for about six months.

BTW, this being a 200, I'd check the valve timing pretty soon. If it did
slip, it may be close to the end. The turbo's are interferance engines.

Tony Hoffman

On 8/17/06, Huw Powell <audi at humanspeakers.com> wrote:
>
> > Actually, I doubt you'd hear it. The valves are pretty small, and the
> > combustion chamber is surrounded by lots of metal.
>
> Good point...
>
> > I've never heard reports of hearing the valves bend, and I've
> > repaired a lot of cars with bent valves. However, maybe someone who
> > actually has had it happen will chime in? Was there a noise or not?
> > The typical description I've heard is that the car just looses power.
>
> Plus, it's not like it's going to go on for long - a few times around
> and the engine won't really be running anymore, right?
>
> Although I guess the drivetrain will keep it spinning until the driver
> freaks out and releases the clutch or something.
>
> --
> Huw Powell
>
> http://www.humanspeakers.com/audi
>
> http://www.humanthoughts.org/
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