Toyota CT20 (1JZ-GTE VVT-i Single Turbo)
The late-model Toyota 1JZ-GTE engine is very different to the earlier versions that most people recognise. While the early 1JZ uses a pair of compact turbochargers, the later version employs VVT-i technology and a large-capacity CT20 single turbo.
This is one of the sweetest Japanese import turbochargers you’ll stumble across.
The 1JZ-GTE is rated at the Japanese-regulation 206kW output and, looking at the physical size of the compressor and turbine, we guess this turbocharger can crank a massive 250kW without problems. The only limitation is the strength of its ceramic turbine wheel. As far as we can determine, this turbocharger uses a conventional-style centre bearing with water cooling.
The compressor inlet to this turbo measures 57mm diameter and the discharge nozzle (which uses a 2 bolt flange) is 45mm. The turbine passage is 48mm diameter and the mounting flange is 74 x 98mm. Four bolts connect the exhaust manifold to the turbine and five bolts are necessary for the dump pipe.
The 1JZ-GTE VVT-i CT20 is a fantastic, late-model turbocharger for big power applications.
Note there are a few smaller turbochargers available in the CT-series. CT8, CT9, CT10 and CT12s are found on everything from Starlet turbo engines to Supra RZ twin-turbos.
