Turbo Failure from Cheap Chinese CT26 Clone - Replace with Quality OEM/Upgraded CT26

Turboadvanced✓ OP Confirmed

Problem

After installing a cheap Twisted Motion (Chinese clone) CT26 turbo during an engine rebuild, the turbo failed prematurely. Initially the turbo was not producing boost, then briefly worked at high RPMs before complete failure with white smoke from the exhaust.

Boost gauge not movingNo audible turbo spool soundNo top-end powerWhining noise above 2100 RPMWhite smoke from exhaust (oil seal failure mistaken for coolant)Poor low-end and overall performance compared to quality turbo

Root Cause

The cheap Chinese aftermarket CT26 clone (Twisted Motion) had poor manufacturing tolerances — loose clearances between the turbine wheel and turbine housing allowing exhaust energy to bypass the turbine, sloppy bearing tolerances adding rotational resistance, and poor sealing on the compressor cover. These quality issues caused premature oil seal failure and overall inferior performance compared to a quality OEM or upgraded CT26.

Confidence

Moderate confidence — Original poster confirmed this resolved the issue

View Original Thread →Posted February 2022 on SupraForums.com