List of VM Motori engines


Italian manufacturer VM Motori S.p.A. has designed and built several different diesel engines for many third-party applications. Fiat is the actual owner, and sells projects to automotive manufacturers like GM, Jeep, and other companies. VM Motori offers different range of engines depending on the applications: automotive, industrial, marine, and power generation.

Automotive applications

3 Cylinder

R 315 SOHC

1.5 L I3, with a single overhead camshaft, four valves-per-cylinder, and common-rail direct fuel injection.
This engine was designed in 1998 with the related 4-cylinder variant R 420 SOHC. In 1999, VM granted Hyundai the license to manufacture both engines. Under terms of the agreement, Hyundai was able to manufacture the engines only to power its vehicles, while VM was free to grant other license agreements also in Korea, as happened in 2004 with GM Daewoo.
Further evolutions were named RA 315 and A 315.
Applications:
bore and stroke, straight-three engine, of an OHV pushrod design with two valves per cylinder. The block was cast iron, with an alloy head. It featured a four main bearing crankshaft, a balance shaft, and a Bosch VE3/10 fuel injection pump. A KKK 14 turbocharger was used, with an intercooler for the facelifted 'Nuova 33' of 1990.
Although out of production, this was the biggest three-cylinder engine ever made for a car.
Applications:
at 4000 rpm 1900-2700 RPm.

RA 420 SOHC

, with four valves-per-cylinder and common-rail direct fuel injection. Produced by GM Korea and Hyundai Group.
Applications:
straight-4, with two valves-per-cylinder and indirect injection from Bosch.. This engine, developed for Alfa Romeo in 1979, is also known as the VM80A and VM4 HT. Usually with KKK 16 turbochargers.
Applications:
straight-4, with two valves-per-cylinder and indirect fuel injection.. This engine is also known as the VM81A and VM4 HT 2.4. At first the 2.4 used KKK 24 turbochargers, later KKK 16s were installed for higher output.
Applications:
straight-four, with two valves-per-cylinder and indirect fuel injection., the engine size is variably referred to as either 2,500 or 2,499 cc. This engine too has been called HR 492, signifying four cylinders of bore. Timing gears, not belt.
Applications:
This engine was also used in some early Toyota Land Cruisers & Hilux, and Opel Fronteras.
The 425 OHV used in Chrysler Voyager 1991–2000 only 1996 and 1997 was with chain.
Between 1997 and 2001 this engine was manufactured at "Detroit Diesel Motores do Brasil" in Curitiba, Paraná, Brazil. The plant was eventually sold to Perkins after the Dodge Dakota stopped production locally.

R 425 OHV

425 OHV fitted with direct fuel injection for cleaner emissions.
Applications: Rover 800 late models circa 1998

R 425 DOHC

straight-4, with four valves-per-cylinder and common-rail direct fuel injection. Also available with variable geometry turbocharger with upgraded power output of.
Applications:
A derated version of this engine putting out was chosen in 2006 to power the new generation of the iconic London Taxi.

R 428 DOHC

R 425 DOHC enlarged to displacement.
Applications:
Evolution of R 428 DOHC. Base design for SDEC SC28R engine.
Applications:
Evolution of R428 DOHC with common rail injection system and piezoelectric injectors
Applications:

5 Cylinder

HR 588 OHV

, with two valves-per-cylinder and indirect fuel injection from either Bosch or Spica.. This engine is a five-cylinder version of the 2-litre [|HR488], and also uses KKK turbochargers.
Applications:
Essentially a 425 OHV with an extra cylinder. Straight-5, with two valves-per-cylinder and indirect fuel injection.
Applications:
531 OHV I5 engine, fitted with direct fuel injection.
Applications:

6 Cylinder

638 OHV

Essentially a 531 OHV with an extra cylinder. inline-six, with two valves-per-cylinder and indirect fuel injection.
Applications:
Also used by BMW Marine as a stern-drive package.

R 638 OHV

638 OHV fitted with direct fuel injection.
Applications:

D 642 OHV

Essentially an R 638 OHV enlarged to displacement. It was the first VM Motori engine to feature direct fuel injection.
Applications:
A planned double overhead camshaft V6 engine, featuring four valves-per-cylinder and common-rail direct fuel injection.
Developed for General Motors but stopped at the end of 2008; after Cadillac left the European market and Saab was put for sale, GM had no use for that engine.

A 630 DOHC

A double overhead camshaft V6 engine, featuring four valves-per-cylinder and common-rail direct fuel injection. A variant complying with the emission norms of the North America market is codenamed L630 DOHC and marketed by Chrysler as the EcoDiesel. The high-performance, single turbo version is codenamed as A630 DOHC HP.
A630 applications :
L630 applications :
Such engines were found to have emissions defeat devices on model year 2014–2016 vehicles.
A630 HP applications :