A8 Parts Forum - Newbie Question

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- - Newbie Question (https://forum.a8parts.co.uk/showthread.php?t=822)

-=FUBES=-

15th May 2009 01:01 PM

Newbie Question

Hi guys,

Just a quick question, what is the difference between the 4.2 and the S8?

Not afraid of getting dirty with the car, just wanted to know what the fundamental differences were between the 2 engines......

Cheers

-=F=-

Conan_the_Librarian

15th May 2009 01:14 PM

In a nutshell, for the pre facelift, higher compression ratio, different cams, different inlet manifold, reworked heads, different mapping, lower ratios in the transmission and final drive.

Singh

15th May 2009 01:16 PM

Pre Facelift A8 = 300 BHP
Facelift A8 = 310 BHP

Pre Facelift S8 = 340 BHP
Facelift S8 = 360 BHP

S8 also reves a lot more than the A8, 7250 ish not sure exactly, someone will be able to help more i'm sure!

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