project Nexus | We Fixed the ST185 Celica's 3sgte Hidden Turbo Issue

In this episode of Project NEXUS, we dive back into the ST185 Toyota Celica GT-Four to fix our remaining engine and turbo issues on the 3SGTE! After discovering oil leaking from the exhaust side of our turbo setup, and being smoked out in the shed from the burning oil, we pull the manifold off, inspect the damage, and compare our CT26 options side-by-side—including the stock 38mm OEM unit, a 48mm Garrett-spec high-flow, and an upgraded 58mm Kinugawa CT26 replacement. We reinstall the factory exhaust manifold to keep the top-mount intercooler setup, button up the upgraded turbo, route a custom silicone air intake with the relocated AFM, drop in a fresh battery, and fire the 3SGTE up to test our full engine and gearbox refresh. ⏱️ Video Chapters: 0:00 – Teardown & Spotting the Oil Leak 7:29 – Removing the Turbo & Manifold 9:50 – Exhaust Manifold & Intercooler Strategy 10:35 – CT26 Turbocharger Comparison (OEM vs. High-Flow vs. 58mm) 13:40 – Reassembly & Fitting the Upgraded Turbo 15:52 – Custom Intake Routing & AFM Relocation 18:00 – Battery Install & Engine Bay Overview 19:25 – First Start-Up & Build Summary If you're enjoying the ST185 Celica build, don't forget to Like, Comment, and Subscribe to The JDM Shed for more garage builds, track prep, and JDM project updates! 🏁 #ST185 #CelicaGTFour #3SGTE #ToyotaCelica #TheJDMShed #ProjectNexus #CT26Turbo #TurboUpgrade #JDMBuild