Timing belt on a 3.0

Andrew Duane aduane at juniper.net
Thu Dec 18 08:05:53 PST 2008


BTW, one word I got was that the "new" 105K mile interval was forced
upon them by California, who wouldn't certify any car that needed
emissions maintenance at less than 100K miles. So they performed a
documentation upgrade and magically the belts were good for 105K!
Amazing. Of course, documentation is not reality.....

They really just need a mileage figure, you can't ask people "how much
highway driving" they do and try to guess. Since failure is immediate,
without warning, and catstrophic, they need to be ahead of it.

> No it is not old school. It is the officially revised recommendation,
> from the official factory service manual, super-ceding previous
> recommendations, instituted in late 2006/early 2007, after numerous
> failures. 
> 
> Grant
> On Dec 18, 2008, at 9:58 AM, MXHOWES at aol.com wrote:
> 
> > Is not the 60 K (miles) interval kind of old school thinking? I
> > think  that the improvements in timing belt technology have made
> > the 90 K interval more  of the norm. Having said that, if I had 86
> > K on my Audi I would be either  be shopping for the parts or a good
> > mechanic ... soon. (depending on how  the car has been driven.)
> > 
> > I will open another can of worms by stating that the life of a
> > timing  belt should be measured by the total time (in hours,
> > revolutions or years) that the belt has been in service. The soccer
> > mom's Audi is going to have  a lot more hours on the engine at 90 K
> > than the person who does a 90 mile a day  commute. Also to be
> > considered is how the car is driven ...... do you ever take it over
> > 3500 RPM? If so, how often? 
> > There are a lot of factors to be considered in making a decision
> > based  on mileage. Since I drive my Audi's very easy and spend a
> > lot of  time on the freeway, a 90 K interval seams more than
> > reasonable. 
> > 
> > 
> > Jim
> > 
> > > > Let me add one more thing. Despite the milage I've seen  them
> > > > go to, I won't go more than 60K on ANYTHING I own. That
> > > > includes  my older non-interferance engines as well. All I was
> > > > saying (before  getting blasted for it) is that's what I've 
> > > > observed. 
> > 
> > Tony
> > 
> > I
> > Jim
> > **************One site keeps you connected to all your email: AOL
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> 
> Grant Lenahan
> glenahan at vfemail.net
> (201) 602-4702 mobile
> 
> 
> 
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/Andrew



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