Timing Chain (Was Re: Between a Rock and a Rock: Repair or Replace

[Ti Kan]

Bhatti, Mohammed writes:
> Ti Kan wrote:
> > On the A8, A6 4.2, S6 and RS6, etc., the V8 in there still has the
> > timing belt up front.  There is no space issue on those cars.
>  
> So why not put a timing chain on the front in these cases instead of
> rubber belt prone to break?

I guess apparently Audi engineers consider that the timing belt to be a
service item and breakage shouldn't be a "problem" if it's replaced
within its designed service life.  AOA probably stretched that a bit
far with their maintenance intervals (to save cost).  I wouldn't be
surprised if the Audi engine designers had shorter belt replacement
intervals in mind.

At any rate, I think it's probably safe to assume that timing chains
will make its way into future Audi engine designs.

-Ti
2003 A4 1.8T multitronic
2001 S4 biturbo 6-sp
1984 5000S turbo
1980 4000 2.0 5-sp
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