The TD025 is part of Mitsubishi Heavy Industries' extensive TD-line of turbochargers and is one of the smallest automotive turbos the company makes. This turbo comes stock on a number of low-powered diesel applications and is available from MHI's Japanese outlet, GReddy Performance. The "TD" designation refers specifically to the unit's turbine wheel design, but refers colloquially to the turbo as a whole.
This turbo is used on the 1.6-litre, 89-horsepower DV6UTED4 diesel used in the 2005 to 2007 Ford C-Max/Fiesta/Focus TDCi. Opel/Vauxhall applications include 75-horsepower, 1999 1.7-litre Y17DT(L) engines used in the same-year Astra G/Corsa C. It was also used in the 2005 and later 109-horsepower Kia Cerato/Rio diesel.
A TD025 turbo can produce between about 50 horsepower and 115 horsepower, depending on the specific version and compressor wheel used. The TD025 uses several different compressor wheel designs; the common 05C compressor wheel is good for 75 horsepower max, but works best at around 50. MHI lists this turbo's maximum rpm as 250,000 and maximum exhaust gas temperature as 482 degrees C Centigrade. The TD05 is rated to produce a maximum pressure ratio of 2.2-to-1 without a wastegate and 2.3-to-1 with a wastegate.
Dimensions and Specs
The TD025 uses an exducer outlet of between 33 and 36.3 millimetres depending on exducer housing diameter; the exhaust housing measures 2.0 centimetre-squared. These turbos utilise a free-floating centre bushing and a P430-type actuator. Compressor inlet size varies by compressor wheel trim and housing for that particular version.