Theory LONG: Audi Warranty issues, AoA was: Car fax

[Ti Kan]

Dan DiBiase writes:
> Dumb question: what is the difference between an 'interference' engine and
> a 'non-interference' engne??

With an interference engine, if the timing belt (or timing chain) is to
break, the valves will hit the piston.  A non-interference engine's valves
will not hit the piston when the same failure occurs.

Virtually all modern Audi engines are interference designs, due to
the shape of the combustion chamber and the high compression ratio.

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