We always hear people talking about âthat heavy V8â in the 4.2 cars when theyâre scrambling for a reason to dislike the 4.2 FSI. Itâs a pretty weak swipeâŠsaying you donât like a V8 is like saying you donât like good food and perfect weather. Besides, the 4.2 FSI engine is made of aluminium, and the intake manifold is made of magnesium. Further, itâs a densely packed, very
Coolant leak (o-ring fitting rear of engine)* Coolant expansion tank leak (cracks at the bottom)* Oil filter housing leak Thermostat failure* Carbon buildup Clutch issues (6sp) Front-end suspension wear Failed engine mounts Timing chain guide wear (I think pre-2010, expensive!) * has happened on mine (2012, 55k miles)NKY. My Photo Gallery: 0. Originally Posted by TheSchwa. They are completely different motors To start, the S4 has a timing chain in the back, while the allroad has a timing belt in the front. Allroad 4.2 (BAS) has timing chain. Current: 07' Q7, B6 S4. Past: B5 1.8t, B6 S4, MK2 VR6. Instagram: Zerokiller698. To be able to mount powerful engines (such as a V8 engine in the Audi S4 and Audi RS4, as well as the W12 engine in the Audi A8L W12), Audi has usually engineered its more expensive cars with a longitudinally front-mounted engine, in an "overhung" position, over the front wheels in front of the axle line - this layout dates back to the DKW and
This is where the new S4 TDI comes in. It swaps the petrol engine for a turbodiesel V6 of the same size, supplemented by a 48-volt mild hybrid system. Developing 342bhp, power has dropped only