The Nissan TD engine is a series of straight-4

Straight-4

The inline-four engine or straight-four engine is an internal combustion engine with all four cylinders mounted in a straight line, or plane along the crankcase. The single bank of cylinders may be oriented in either a vertical or an inclined plane with all the pistons driving a common crankshaft....

 and straight-6

Straight-6

The straight-six engine or inline-six engine is a six-cylinder internal combustion engine with all six cylinders mounted in a straight line along the crankcase...

 diesel engines produced by Nissan with displacements varying from 2.3 L to 4.2 L . It is the successor to the Nissan SD diesel engine

Nissan SD engine

-SD20:The SD20 is a normally aspirated straight-four diesel engine with a bore and stroke of 83.0 and 92.0 mm. It had three main bearings. The Diesel versions of the Nissan Cedric in the 1960s until the early 1980s used this engine, which produces at 4,000 rpm...

 and was replaced by the Nissan QD engine

Nissan QD engine

QD engine, successor to the Nissan TD engine, was a 4 cylinder diesel produced from the mid-1990s through 2000, with a turbocharger used only on the QD32ETi...

.

All TD series engines were overhead valve four-cylinder engines, except the TD42 which was a six-cylinder.

TD23

The TD23 measures 2.3 L (2289cc) with a pre-combustion chamber. @ 4300 RPM

It is common in pre-1990 Nissan Navara

Nissan Hardbody Truck

-Nissan Hardbody:The D21 generation was the successor to the Datsun "720". The company used the name "Datsun" from 1980 to 1983 then renamed itself "Nissan" beginning with the 1983.5 model year line of trucks and cars alike. The D21 series were unofficially called Nissan Hardbody in the United...

 D21 1987-1992 and industrial applications such as trailer swinglifters and container fridge motors. Also used in 1986-1988 Nissan Homy

Nissan Homy

The Nissan Homy was built and sold by the Prince Motor Company before the merger of Nissan in 1965 and the Homy was the first vehicle to be acquired by Nissan. After the merger in August 1966, the Prince Homy name was changed to Nissan. The merger was complete by 1970...

 and Nissan Caravan series E24. Used in Nissan Atlas

Nissan Atlas

The Nissan Atlas is the name used in Japan for two lines of pickup trucks and light commercial vehicles sold by Nissan and built by UD Nissan Diesel, a Volvo AB company and by Renault-Nissan Alliance for the European market. The lighter range replaced the earlier Cabstar and Homer, while the...

 1 ton trucks from 1986-1995

TD25

The TD25 measures 2.5 L (2488cc) @ 4300 RPM @ 2200 RPM
It is applied to the following vehicle(s):

It's used in the 1990 - present Nissan Cedric YPY31, the Nissan Navara D22 series, and the 1 ton Nissan Atlas

Nissan Atlas

The Nissan Atlas is the name used in Japan for two lines of pickup trucks and light commercial vehicles sold by Nissan and built by UD Nissan Diesel, a Volvo AB company and by Renault-Nissan Alliance for the European market. The lighter range replaced the earlier Cabstar and Homer, while the...

 F23 series from 1995-1999

TD27

The TD27 measures 2.7 L (2663cc) with a pre-combustion chamber.

Common in post-1990 D21 Nissan Navara UTEs and pre-1991 Nissan Terrano 3 door wagons.and Nissan Forklifts model:FGD02A32Q

TD272

@ 4300 RPM @ 2200 RPM

Nissan Terrano Grid series D21 1986-1992

Nissan Atlas

Nissan Atlas

The Nissan Atlas is the name used in Japan for two lines of pickup trucks and light commercial vehicles sold by Nissan and built by UD Nissan Diesel, a Volvo AB company and by Renault-Nissan Alliance for the European market. The lighter range replaced the earlier Cabstar and Homer, while the...

 1 ton series F22 & F23 1986-1999

Nissan Homy

Nissan Homy

The Nissan Homy was built and sold by the Prince Motor Company before the merger of Nissan in 1965 and the Homy was the first vehicle to be acquired by Nissan. After the merger in August 1966, the Prince Homy name was changed to Nissan. The merger was complete by 1970...

 & Caravan series E24 1994-1997

Datsun Truck

Datsun Truck

The popular and economical Datsun/Nissan compact pickup truck was produced in Japan from 1955 and imported to the United States, Australia, Finland, the Middle East, South Africa, and various European countries...

 series D21 from 1988-1996

TD27 Turbo

A turbocharged version of the TD27 was fitted to post 1991 Nissan Terrano D21 5-door wagons and post 1991 Nissan Navara UTE D21. Also used as the diesel option in Nissan Homy

Nissan Homy

The Nissan Homy was built and sold by the Prince Motor Company before the merger of Nissan in 1965 and the Homy was the first vehicle to be acquired by Nissan. After the merger in August 1966, the Prince Homy name was changed to Nissan. The merger was complete by 1970...

 and Caravan vans.

This engine was also fitted to LTI's Fairway series and the TX1

TX1

This is about the taxi in London. For the camera see Canon PowerShot TX-1. For the video game, see TX-1 .TX1 is a Hackney carriage introduced by London Taxis International in 1997 and designed to replace the aging Austin FX4...

 series .

TD27T2

@ 4000 RPM @ 2200 RPM

Nissan Terrano and Datsun Truck

Datsun Truck

The popular and economical Datsun/Nissan compact pickup truck was produced in Japan from 1955 and imported to the United States, Australia, Finland, the Middle East, South Africa, and various European countries...

 series D21 from 1988-1996

TD27Ti

Intercooler added @ 4000 RPM @ 2400 RPM

Nissan Homy

Nissan Homy

The Nissan Homy was built and sold by the Prince Motor Company before the merger of Nissan in 1965 and the Homy was the first vehicle to be acquired by Nissan. After the merger in August 1966, the Prince Homy name was changed to Nissan. The merger was complete by 1970...

 & Caravan series E24 from 1990-1995

TD27ETi

electronically controlled turbocharged intercooler @ 4000 RPM @ 2000 RPM

Nissan Homy

Nissan Homy

The Nissan Homy was built and sold by the Prince Motor Company before the merger of Nissan in 1965 and the Homy was the first vehicle to be acquired by Nissan. After the merger in August 1966, the Prince Homy name was changed to Nissan. The merger was complete by 1970...

 & Caravan series E24 from 1995-1999

Nissan Mistral

Nissan Mistral

The Nissan Terrano II is a mid size SUV manufactured by the Japanese automaker Nissan. It was also made by Nissan's Spanish subsidiary Nissan Motor Ibérica S.A. for the European market, where it was marketed as Nissan Terrano II, and also supplied under an OEM agreement to Ford Europe for sale as...

 series R20 1998 model year

Nissan Terrano series R50 from 1995-1999

TD42

The TD42 measures 4.2 L (4169 cc). It is an analog fuel-injected 6-cylinder diesel engine with a pre-combustion chamber.

TD422

@ 4000 RPM @ 2000 RPM

Nissan Safari series Y60 from 1987-1997

Nissan Civilian

Nissan Civilian

The Nissan Civilian is a minibus built by Nissan & UD. It is primarily available as city bus and tourist bus.In Japan, Asia-Pacific, Mid-East, Africa, South America, its principal competitors are Mitsubishi Fuso Rosa, Isuzu Journey and Toyota Coaster.-General information:Nissan Civilian is sold...

series W41 from 1999-2004

TD42 Turbocharged

A turbocharged version is available (code TD42T1, produces 145 PS at 4,000 rpm) and in later versions an intercooler was fitted to stabilise intake temperatures. Another option is the TD42Ti with semi-electronic fuel injection, a basic system that only controlled the fuel pump, while retaining the mechanical fuel injectors of the previous engines.