Is there 2 variants of 2.5 V6 TDi engine?

[ian0x0r]

Never quite found out the answer to this question. Parkers seems to think there was 155BHP model produced from 2002 to July 2003 and a 160BHP model produced from July 2003 onwards. Im would assume I fall into the 155BHP category with my car being manufactured before July 2003. My engine code is AYM. Does anyone with a post July 2003 model have a different engine code?

I found my code on euro car parts putting the reg number in

[ian0x0r]

Well to answer my own question, yes there are. Found a 2006 2.5 TDi on ebay and entered the reg, engine code is BDG

Anyone know the difference apart from the extra 5bhp ?

[JonathanK]

I'm pretty sure the early engines are 150bhp. They were upgraded to 163bhp when the engine was reworked to meet Euro 1V emissions regs in 2004.

Jonathan

[PR1MEVIL]

Hi, any idea how they were upgraded to 163?? Might be usefull if buying parts etc.. Mines a BDG code engine, on a 55 plate

Edited 3 August, 2010 by PR1MEVIL

[JonathanK]

Amazing what you can find when you look. Found this on Wikipedia. Main difference marked in bold below but I'm guessing there are ecu dfferences too. 'New' engine was introduced late 2003 by the way.

[edit] 2.5 V6 24v TDI 110-132kW

This engine was never offered in North America.

identification

parts code prefix: 059

engine configuration & engine displacement

90° V6 engine, Turbocharged Direct Injection (TDI) turbodiesel; 2,496 cubic centimetres (152.3 cu in); bore x stroke: 78.3 by 86.4 millimetres (3.08 in × 3.40 in), stroke ratio: 0.91:1 - undersquare/long-stroke, 416.0 cc per cylinder, compression ratio: 18.5:1, viscous-coupled engine cooling fan

cylinder block & crankcase

compacted vermicular graphite cast iron (GJV/CGI); four main bearings, die-forged steel crossplane crankshaft with split crankpins, light alloy pistons (Kolbenschmidt on 120 kW, Mahle or Kolbenschmidt on 132 kW), simplex roller chain-driven oil pump, two-part multi-baffled cast aluminium alloy oil sump, oil filter module (incorporating oil separator) mounted within the 'vee'

cylinder heads & valvetrain

cast aluminium alloy; four valves per cylinder, 24 valves total, initially: sliding finger cam followers, later: low-friction roller finger cam followers, both with automatic hydraulic valve clearance compensation, dual timing belt relay-driven 2x double overhead camshaft (2xDOHC - two overhead camshafts per cylinder bank - 'quad cam', one timing belt driven from the crankshaft drives both inlet camshafts, the second belt relay-drives the exhaust camshafts from the inlet), dual inlet ports

aspiration

hot-film air mass meter, one turbocharger mounted within the 'vee', two all-alloy side-mounted intercoolers (SMICs), two cast alloy intake manifolds

fuel system & engine management

timing belt driven Bosch VE mechanical distributor-type injection pump with direct injection (DI); early variants with proprietary electronic engine control unit (ECU) and European EU3 emissions compliant; later variants with water-cooled exhaust gas recirculation (EGR), Bosch EDC electronic ECU and EU4

exhaust system

cast iron exhaust manifolds, catalytic converter

DIN-rated motive power & torque outputs, ID codes

110 kilowatts (150 PS; 148 bhp) @ ?,??? rpm; 310 newton metres (229 ft·lbf) @ 2,200 rpm — AFB, AKN

114 kilowatts (155 PS; 153 bhp) @ ?,??? rpm; 310 newton metres (229 ft·lbf) @ 1,400 rpm — AYM

120 kilowatts (163 PS; 161 bhp) @ ?,??? rpm; 310 newton metres (229 ft·lbf) @ 1,400 rpm — BCZ, BDG, BFC

132 kilowatts (179 PS; 177 bhp) @ ?,??? rpm; 370 newton metres (273 ft·lbf) @ 1,500 rpm — AKE, BAU, BDH

applications

Audi A4 (AFB: 11/97-06/00, AKN: 07/98-09/01, AYM: 12/00-06/02, AKE: 12/00-05/03, BFC: 07/02-05/03, BAU/BDH: 06/03-12/04, BCZ: 06/03-12/05, BDG: 06/03-05/06), Audi C5 A6 / Audi C5 allroad (AFB: 04/97-05/00, AKN: 10/98-05/01, AKE: 11/99-08/03, AYM: 06/01-06/02, BFC: 07/02-08/03, BDG/BDH: 02/03-01/05, BAU/BCZ: 02/03-08/05), Audi D2 A8 (AFB: 06/97-06/00, AKN: 11/97-09/02, AKE: 11/99-09/02), Å koda Superb B5 (AYM: 12/01-08/03, BDG: 08/03-03/08), Volkswagen Passat (B5.5) (AFB: 08/98-08/00, AKN: 05/99-05/03, BAU/BDH: 01/03-05/05, BDG: 05/03-05/05)

reference

ID and detail from ETKA

[edit] awards

was winner of the "2.0-litre to 2.5-litre" category in the 1999 annual competition for International Engine of the Year

[ian0x0r]

Nice find there

Guess I probably should of had a look about, just never noticed the topic discussed hereon Briskoda

Interesting stuff really

[oh_superb]

Basically the 163 ps engine is more powerful (yes, 8 PS, hardly biblical), but more importantly a lot more torque, 390 as opposed to 310 Nm or so, and it kicks in low low low down at 1250 rpm. They could do this with high pressure common rail injection system, as opposed to the ooooold VP44 bosch pump which both of us have indeed!

The bits are not interchangeable I'm afraid.

In hindsight I wish I spent a bit more on the later version and opted for manual gearbox, but the 155 auto is a fine cruiser nonetheless.

[ian0x0r]

That is a lot more torque!

Ive been trying to find a website I was on a while back, im sure it said the 155 could be remapped to 190 ish BHP where as the 163 could only remap to 180-185 ish, not sure if this is true.

[oh_superb]

That is a lot more torque!

Ive been trying to find a website I was on a while back, im sure it said the 155 could be remapped to 190 ish BHP where as the 163 could only remap to 180-185 ish, not sure if this is true.

MTM (German reputable tuners) specify 185PS (163PS) and 180PS (155PS) tuning options. Sadly the 155 only gets up to 350 Nm when tuned, still 40 lower than the 163PS STANDARD 390Nm. Was contemplating a tuning job for a while, but not sure of the 50Nm will be noticeable. Decided to spend money on regular oil changes and fresh air filter every now and then to keep the car in top notch state of tune instead.