A turbocharger is a specialized device that boosts the power and efficiency of an internal combustion engine. There are a lot of different turbochargers to choose from, but the Japanese JZA80 CT20 Ceramic Turbocharger is truly an original. It is compatible with the Toyota JZ engine family’s 2JZ-GTE engine. You’ll find it used in the popular Japanese sports vehicles: the Toyota Supra JZA80 and the Toyota Aristo JZS147.
The JZA80 CT20 features a ceramic turbine wheel, aluminum compressor wheel, carbon seals, and bronze bushing bearings. It runs at least 10 pounds on the 2JZ-GTE, but some tests have shown it to run even higher at around 18 pounds and beyond. But if you want the turbocharger to be reliable, then it should not go past 18 pounds. Most experts will recommend a limit of 14.7 pounds for true reliability, which is equal to 1 bar.
The exhaust housing of the JZA80 CT20 has an Air Aspect Ratio of 0.35, and the compressor housing has an Air Aspect Ratio of 0.36. A high amount of nickel material is used to make the housings of the JZA80 CT20. Each one uses a 5-stud outlet flange and 3-stud inlet flange. Based on these figures, this turbocharger will give you a maximum response with very little lag.
A lot of people make comparisons between the JZA80 CT20 and the CT12B turbocharger series, but they do have some differences. The CT12B turbocharger series contains a 7.5mm turbine shaft, and the CT20 turbocharger series contains a 10mm turbine shaft. However, the turbine wheel dimensions in each turbocharger series are the same. Certain vehicles with the JZA80 CT20 turbocharger, such as the LJ70 Landcruiser series and the Hilux LH51, both have the same shaft diameter, blade count, and turbine wheel dimensions as vehicles with the CT12B turbocharger.
The turbochargers are almost the same size, although the exhaust housing of the JZA80 CT20 is 23.7mm more in length. There is also no wastegate, which is a device that manages the amount of pressure of the exhaust gases. It does this by controlling the exterior vent so that it’ll be open or closed as the gases try to escape. Without the wastegate, the turbocharger relies on an exhaust bypass valve that gets used as the turbocharger transitions into an online state.
There is a primary turbocharger and secondary turbocharger. The outlet pipe in the cast elbow of the latter is slightly bigger, approximately 4.8mm bigger. But with this greater diameter being present, it creates an EGCV restriction deeper into the dump pipe. The exhaust bypass valve makes sure compressor speeds are matched with the primary turbocharger.
Below are the specifications of the JZA80 CT20:
- Toyota is the manufacturer
- The outlet diameter of the turbine is 48mm
- The inlet diameter of the turbine is 59.8mm
- 10 blades in the turbine
- Turbine is made of ceramic material
- 36mm turbine housing inlet
- 1mm turbine housing outlet
- 10mm turbine shaft diameter
- 35 Aspect Ratio for the turbine housing
- The inlet diameter of the compressor is 37mm
- The outlet diameter of the compressor is 62mm
- 10 blades in the compressor
- Compressor is made from aluminum material
- 8mm compressor housing inlet
- 4mm compressor housing outlet
- 36 Aspect Ratio of the compressor housing
- 05mm bearing ID
- 9mm bearing OD
- 96mm bearing width
- Bronze bearing material
- 6 oiling holes for each bearing
- 26mm wastegate
- 10-pound spring rate for the actuator
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If you’d like to find more information about the JZA80 CT20 or how to purchase one, you should search for turbocharger dealers online. They’ll either have this model turbocharger available or will know another dealer who does.