Draft:Aston Martin AM04 engine

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{{Infobox engine

| name = Aston Martin AM04 engine

| image = LMGT1 DBR9 engine (818815240).jpg

| manufacturer = Aston Martin

| production = 2005–2011

| configuration = V12, naturally-aspirated, 60° cylinder angle

| displacement = {{convert|5993|cc|L|1|order=flip|abbr=on}}

| bore = {{convert|89|mm|2|abbr=on}}

| stroke = {{convert|79.5|mm|2|abbr=on}}

| block = Aluminium alloy

| head = Aluminium alloy

| valvetrain = 48-valve (four-valves per cylinder), DOHC

| compression = 10.3:1

| redline =

| fuelsystem = Electronic fuel injection

| management = Pectel ECU

| oilsystem = Dry sump

| coolingsystem = water-cooled

| power = GT1:
{{convert|600|hp|kW PS|0|lk=on|abbr=on}} at 6,500 rpm
LMP1:
{{convert|650|hp|kW PS|0|lk=on|abbr=on}} at 7,000 rpm
{{convert|650|hp|kW PS|0|lk=on|abbr=on}} at 7,500 rpm

| torque = GT1:
{{convert|650|N.m|lb.ft|0|lk=on|abbr=on}} at 5,500 rpm
LMP1:
{{convert|725|N.m|lb.ft|0|lk=on|abbr=on}} at 6,250 rpm
{{convert|770|N.m|lb.ft|0|lk=on|abbr=on}} at 6,000 rpm

}}

The Aston Martin AM04 engine is a naturally aspirated, four-stroke, 6.0-liter, V12 racing engine, made by Aston Martin for use in various race cars, from 2005–2011.{{Cite web |title=Aston Martin AM04 (2004) - Racing Cars |url=http://tech-racingcars.wikidot.com/aston-martin-am04 |access-date=2025-05-17 |website=tech-racingcars.wikidot.com}}{{Cite web |date=Oct 2, 2014 |title=AM04 Engine |url=https://en.aston-martin-club.com/engine_detail.php?id=2 |access-date=May 24, 2025 |website=en.aston-martin-club.com}} The AM04 used in the race cars is modified from the engine used in the Aston Martin DB9 road car.

Design

The AM04 utilizes a crossflow design in its aluminium alloy cylinder heads to give better engine performance and uses a Pectel engine control unit mated to an Xtrac gearbox.{{Cite web |title=DBR9 – Aston Martin Racing « Aston Martins.com |url=https://astonmartins.com/car/dbr9-aston-martin-racing/ |access-date=2025-05-25 |website=astonmartins.com |language=en-GB}} The engine is constructed using forged steel crankshaft with 7 main bearings and steel connecting rod. The firing order of the AM04 is, with A as left bank of the cylinders: 1A, 6B, 5A, 2B, 3A, 4B, 6A, 1B, 2A, 5B, 4A, 3B.

The DBR9 was fitted with two, {{convert|31.2|mm|2|abbr=on}} inlet restrictors while the B09/60 (DBR 1-2) was fitted with a {{convert|47.8|mm|2|abbr=on}} inlet restrictor.{{Cite web |title=Lola Aston Martin LMP1 DBR1-2 (B09/60 & B10/60) « Aston Martins.com |url=https://astonmartins.com/car/lola-b0960-aston-martin/ |access-date=2025-05-25 |website=astonmartins.com |language=en-GB}} The LMP1 cars utilized a larger intake due to using a GT1 production based engine in a prototype.

A concern to the usage of the AM04 in a prototype, was that its cylinder angle of 60°, is tight, which moved the center of gravity of the engine higher.{{Cite web |title=2008 Lola B08/60 Aston Martin - Images, Specifications and Information |url=https://www.ultimatecarpage.com/car/3557/Lola-B08-60-Aston-Martin.html |access-date=2025-05-25 |website=Ultimatecarpage.com}}

Applications

References