A8 / S8 (D2 Platform) Discussion Discussion forum for the D2 Audi A8 and S8 produced from 1994-2002

Number Two (Engine)

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Old Apr 17, 2003 | 06:21 AM
  #1  
mclarenm8d's Avatar
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Default Number Two (Engine)

Mercedes has AMG punch out their V8 to 5.5 liters, does anyone know if a similar activity has been attempted to our 4.2, and if this was successful?
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Old Apr 18, 2003 | 03:12 AM
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Default Re: Number Two (Engine)

nothing in production. audi had their planned larger motors killed by the vw boys and their narrow-angle v motors. hence the 6l w12 309kw motor for the a8, and laterly the 3.2l vr6 for the a3 & tt.

dave
'01 s8
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Old Apr 19, 2003 | 02:24 PM
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Default Re: AAARRRRGGGGHHHH

woke up this morning and realised that i had left out a rather important enhancement to the 4.2l v8...

the new lamborghini gallardo v10, is developed from the audi 4.2. audi will get it back in twin turbo form in the nuvorali. thereafter rumours have it in the new s8 & s6.

dave
'01 s8
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Old Apr 19, 2003 | 09:48 PM
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Default A crazy thought on my part ...

Working under the assumption that

1. My current injector and induction set-up is only good for between 300 - 360 hp
2. Realistically, the stock biturbo S4 turbos are only good for flowing ~310 hp

Maybe I can get crazy low end torque with S4 turbos, without dipping into major re-engineering of the metering and injectors?

I would be keeping the max hp level basically the same but the hp curve is drastically flattened.
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Old Apr 19, 2003 | 10:24 PM
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Default More info ...

I'd put the air mass sensor in front of the turbos, instead of behind.

The major stumbling block I can see is if the ECU stumbles on what to do with a reading of "300 hp" worth of air at roughly 3500 rpm instead of 6000 rpm.
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