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Audi S8 (AHC) 4,2L V8 32V Into Audi A4 B5 Quattro Sport. - Car Talk (2) - Nairaland

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Audi B5 420-R: The Build. / 1997 Audi A4 (b5) Manual In English / Audi S8 (AHC) 4,2L V8 32V Into Audi A4 B5 1,8T Sport. (2) (3) (4)

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Re: Audi S8 (AHC) 4,2L V8 32V Into Audi A4 B5 Quattro Sport. by frankyblac(m): 6:06pm On Feb 08, 2010
how much will it take you to build one for me

Re: Audi S8 (AHC) 4,2L V8 32V Into Audi A4 B5 Quattro Sport. by realborn(m): 4:39pm On Feb 16, 2010
@ Siena,

You have been a great source of inspiration and that led to mai purchasing an Audi A4 2003/04 3.0 V6 engine model a year ago.

Its a diesel engine and i purchased it at 33,000KM. It was an excellent drive until it started showing all manners of signs.

The parts are pweety expensive and unavailable. I have had to change rollers and replace AC compressor and sitting. I have changed alternator twice. D sound has increased though reduced now since i started using another range of diesel oil. But d sound wasnt noticeable wen i initially bought it.

Many have said the air flow meter and brain box need be changed. The car gives speed signal error when diagnosed, heater signs, break sign, ABS sign and brain box sign on the dash board.

I love d car to a fault. It gives a different feel from oda cars i presently drive or have driven in d past.

Is it possible to get a petrol engine to replace the diesel engine? hw advisable is dat? Diesel parts ere are very scarce?

Kindly advice
Re: Audi S8 (AHC) 4,2L V8 32V Into Audi A4 B5 Quattro Sport. by Nobody: 1:11pm On Sep 28, 2011
^^^ Sorry Realborn, for my late response, I've only just spotted your post here. You may well have resolved your issues, or even sold your car. But I'll post this for the benefit of others who may be considering the same options you were. . .

First of all, if your '04 Audi A4 indeed has a 3,0 V6 engine, it will be petrol. The only V6 diesel in the B6 A4 was the 2,5 TDI.

The ECU of these cars, like most others are extremely reliable. I've never heard of failure on any. In Nigeria, incompetent mechanics try to conceal their inadequacies by blaming the ECU. I would be inclined to take the car to a proper dealer, or an independent Audi / Volkswagen specialist, that knows one end of a spanner from the other. A preliminary OBD-II scan would be the obvious first step.

Yes, it's very possible to replace the diesel engine with a petrol one, but it makes no financial sense. You'll be spending close to buying an Audi A4 3,0 V6 Quattro, after selling yours. You'll need to replace:

01) Audi A4 / A6 3,0 V6 petrol engine.
02) Audi A4 3,0 V6 engine wiring harness.
03) Audi A4 3,0 V6 ECU.
04) Audi A4 3,0 V6 radiator.
05) Audi A4 3,0 V6 auto transmission.
06) Audi A4 3,0 V6 auto transmission TCU.
07) Audi A4 3,0 V6 engine mounts.
08) Audi A4 3,0 V6 instrument cluster.
09) Audi A4 ignition key with transponder (must be from same car thar ECU and instrument cluster came from, due to immobilliser matching).

Unless you do your own wrenching, and have a donor car for nothing, not worth the expense.
Re: Audi S8 (AHC) 4,2L V8 32V Into Audi A4 B5 Quattro Sport. by realborn(m): 1:51pm On Sep 28, 2011
@ Siena,

Thanks for your concerted efforts always. You may be right that the engine isn't a 3.0l engine. I have not driven the car in 6 months. I hope to carryout a complete overhaul in a couple of weeks. Aside the high noise which has gone lower after changing some of the rollers, the car can be said to be in a perfect condition.

I have decided to keep the diesel engine.

Thanks.
Re: Audi S8 (AHC) 4,2L V8 32V Into Audi A4 B5 Quattro Sport. by Nobody: 7:49pm On Sep 28, 2011
^^^ I'm glad to hear it. Such conversions bring their fair share of problems, more than the ones you're attempting to rectify.

I forgot to add - when converting from diesel to petrol, the fuel tank and lines will also need replacing.
Re: Audi S8 (AHC) 4,2L V8 32V Into Audi A4 B5 Quattro Sport. by sglobe: 9:48am On Mar 17, 2012
well the quite impressive vehicle. i think the maintenance for this was very easy. since it looks so impressive. the engine and other audi parts looks well.

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