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THE VR6 ENGINE

Cool link about the VR6 Engine and W engines

http://autozine.kyul.net/technical_school/engine/tech_engine_packaging.htm

[VR6 pic 1]

[VR6 Pic 2]

Look at the crank and note that it's an even fire V6

[VR6 Pic 3]

[Vr6 Pic 4]

[Vr6 Pic 5]

[Vr6 Pic 6]

[Vr6 Pic 7]

[Vr6 Pic 8]

Introduction

Volkswagen has developed a new six-cylinder engine called the VR-6. This 2.8-liter engine is unique in that the V-angle between cylinder banks is 15° rather than the 60° or 90° found in most conventional V-6 engine designs.

The engine features a cast-iron crankcase, one light alloy crossflow cylinder head with two valves per cylinder operated by chain-driven overhead camshafts.

(are you sure? looks like counterflow... anyway, installing the turbo will take some work)

( Yes it is crossflow...air goes in by the front and comes out by the back... dont be fooled by the

intake that starts out back and goes over the head...)

All fuel and ignition requirements of the VR-6 engine are controlled

by the Bosch Motronic M2.9 Engine Management System.

This Engine Management System features an air mass sensor, dual knock

sensors for cylinder-selective ignition knock regulation, and Lambda

regulation.

Exhaust gases are channeled through a 3-way catalytic converter.

Engine Specifications

Engine code: AAA

Design: Four-stroke, internal combustion engine in "Vee"/in-line

Displacement: 2.8 liter

Bore diameter: 81.0 mm

Stroke: 90.0 mm

"Vee" angle: 15°

Compression ratio: 10:1

Fuel and ignition systems: Bosch Motronic M2.9

Emission control: Lambda control with catalytic converter

The name, VR-6 come from a combination of Vee and the German word

Reihenmotor. The combination of the two can be roughly translated

as "in-line Vee."

Volkswagen has designed the 15° VR-6 to take advantage of

conventional in-line six-cylinder engine features (single cylinder

head, narrow width and excellent balancing) with the advantages

of a V-6 engine design (short overall length and compactness).

VR-6

The VR-6 was specifically designed for transverse installation

in front-wheel-drive vehicles. By using the narrow 15° VR-6 engine,

it was possible to install a six-cylinder engine in existing

Volkswagen models.

V-6 Conventional Design

A wider V-6 engine of conventional design would have required

lengthening existing vehicles to provide enough crumple zone

between the front of the vehicle and the engine, and between

the engine and the passenger cell.

Using the narrow VR-6 engine will help Volkswagen meet current

and future front-end crash standards.