It is essentially a late model BFM with a little more horsepower, and slight modifications from Audi. Own a 2012 audi a8 quattro with 4.2 liter engine. I have the same idea about rebuilding a spare engine. If / when timing chain goes, I want to have rebuilt engine ready to swap in.
AUDI SQ7. 69 900 €. Forces et faiblesses de la AUDI S4 en version 4.2 V8 Quattro 344ch d’après les expériences de propriétaires.
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