Hi All
Glad I found this forum. Been looking for a good S6 forum for some time. I have a 2007 Audi S6 which I have had since 2011. It is time to perform a major fix so I am looking to see what I can do with the engine since it has to come out.
talk to you later
Dan
Hey Dan! Welcome to AudiRevolution !!!
As an v10 S6 owner, you have come to the right place.
If you haven’t already, make sure you check out the S6 Info Dump.
And when you have a chance, please post some pics in the A6/S6 members intro thread.
When you have the engine out, it is the perfect time to do the headers. Installation of the headers goes hand-in-hand with cat/o2 relocation and tune. You can replace the four cats with a single pair of high flow, or do a cat delete, if your State laws allow that.
While your back there, you want to check the timing chain guides. With that said, I havent heard of a single guide or chain failure on the v10 S6. It seems they must have got the updated components.
There are also some seals and gaskets that you should replace. You can check the spark plug tube seals, but they are probably not a problem. There is a common problem with the seal at the base of the oil filter mount, and also some seals around a tube at the back of the heads. For that last one, check the S6 Info Dump, I think I outlined it there.
In my build, I chose to do a bunch of preventative maintenence while the car was out, replacing a bunch of parts that really had nothing wrong with them. My car was also higher mileage (130k) so the plan was always use the money saved on the purchase, to replace most of the parts with new OEM and aftermarket performance stuff.
This is my list of things I replaced on the engine/exhaust (not all necessary)
Intake manifold
Exhaust manifold (replaced with headers)
Catalytic converters (replaced with high flow)
Entire exhaust, including mufflers
Air filters (with new intake)
Coil packs
Water pump and thermostat (due to some reports of failure, and labor intensive replacement down the line)
Starter (since there were some reports of failure, and it is hard to get to after everything is back together)
Spark plugs
various seals and gaskets, while the motor is out
Welcome Dan. You did come to the right place. Lots of new guys helping fill the list of actual data here.
The only other thing I would add to the list is look at a good carbon clean. That will save you lots of issues down the road.