Reconditioned SsangYong Turbo

SsangYong diesel turbos have evolved across two distinct engine families, the D27DT and the D20DT

The SsangYong diesel range was built around two entirely separate engine families. The 2.7 Xdi (codes D27DT and D27DTP) is fitted to the Rexton in its early generations, as well as the Rodius and the Kyron, with 2 distinct power outputs (163 and 165 hp) corresponding to different turbo variants despite an identical engine capacity. The 2.0 Xdi (codes D20DT and D20DTR) came later, fitted to the Actyon and some second-generation Rexton models. These 2 engine families share no common parts on the turbocharger side: OEM references, geometries and flanges differ entirely.

D27DT, D27DTP, D20DT: why reference confusion is so common

On the 2.7 Xdi, the distinction between D27DT and D27DTP is critical. The D27DTP is a revised-boost-pressure variant, and its turbo carries specific OEM references (series 761433, SsangYong side 6640900780 and subsequent) that are incompatible with those of the standard D27DT (series 742289, references 6650900480 and subsequent). The A prefix on original references (A6640900480, A6650900780…) simply denotes reformatted SsangYong references: the part itself is physically identical. On the 2.0 Xdi, the series 54409880014 (references 6710900780 and equivalents) is specific to the D20DT and is not interchangeable with any 2.7 reference.

Common symptoms and causes to diagnose on these Xdi turbos

On both the 2.7 Xdi and the 2.0 Xdi, observed failures follow a recurring pattern: a high-pitched whistle under acceleration, blue or black smoke when the engine is hot, and a noticeable drop in power on pick-up. These engines are sensitive to the quality and regularity of oil changes: contaminated oil or a partially blocked lubrication circuit will rapidly damage the CHRA bearings and compromise turbine sealing. EGR fouling, which is common on these diesels in urban use, makes the problem worse. Before fitting a new turbo, it is essential to check the flow rate and cleanliness of the oil feed circuit as well as the condition of the return pipe: refitting the part without addressing these points will invariably lead to another failure.