Head: Exhaust Cam/Cam Gear: Yes Intake Cam/Cam Gear: No Springs: Yes Retainers: Yes Buckets: Yes Seats: Yes Intake and exhaust valves: Yes Valve guides: Yes Lifters: Yes Locks: Yes Seats: Yes Shims: Same size and fit but different part numbers Other: Timing Belt: Yes Top radiator pipe: No (Different size due to intake cam lump) Throttle cable: No (Different size) Intake manifold: Can be swapped but has different vacuum piping/different IACV and of course different Electronics/TRAC/Throttle Body Exhaust Manifold: Yes Electrics/ECU: ECU: No TRAC: No (Built into the ECU) VVTi ETCS Fuse 15amp Non vvti TRAC fuse with 7.5amp Aristo Engine differences: The VVTi 2jzgte engine also came in the Aristo (1998-2002), as Ive done a conversion using this engine I can provide some information on the differences, some more information is on my project conversion thread from supraforums AU but soon to be summaried and added to a new post on 2JZGARAGE Project SZR to TT. Also there is no seperate diagram which also is a good indicator they are the same.
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The only 1 different part number I found was the crank pulley (not the whole dampner/balancer, just the pulley, look like exactly the same thing, and they are!) What parts are the same as non-vvti? (Confirmed from EPC and personal experience and research) Bottom end: Shortblock: Yes Balancer: Yes Pistons: Yes Piston Rings: Yes Bearings (Rod and crankshaft): Yes Rods and rod bolts: YES! YES! YES! Crank: Yes Oil Pump: Need to confirm but most likely YES They have a different part number, but only at the last number which usually means they were the same unit but updated when new series started etc. Listed all the parts and they are exactly the same, they have been confirmed in the EPC (Toyota Electronic Parts Catalog) Pics are also shown below in the end of the post. Also the crank is exactly the same and so are the pistons and everything else in the bottom end. The VVTi 2JZGTE rods are the exact same size as the non-vvti units. Is the VVTi engine weaker? No, some Toyota lovers will know that most of the later model vvti engines such as (1UZ, 3UZ etc) had weaker rods. The only difference I found in part numbers were the shims, not sure on differences, may only be part updating and no physical change. The actual head components are the same (Well at least interchangeable with non vvti and aftermarket parts). Link to HKS Valcon Unit: The exhaust cam/cam gear is the same as the non-vvti exhaust cam and can take aftermarket cams such as HKS, JUN etc. Some further reading and explanation of VVTi with diagrams: Are VVTi head components different then non-vvti? Yes and no! The vvti has a different Intake cam/cam gear (As its VVTi!) Aftermarket cams are available for the VVTi such as HKSs Valcon system yet they are expensive, a custom grind is probably a more viable option.
Unlike some systems that switch between two compromise settings,VVT-i adjust continuously,tailoring performance to suit virtually any situation. The result is exceptional low-end torque to get you off the line ,midrang punch for passing situations and clean-burning efficiency throughout the rev range. Variable valve timing with inelligence(VVT-i)optimizes engine efficency by constantly retarding or advancing intake valve timing depends on conditions and engine speeds. (VVTi 2JZGTE left Japan Only, VVTi 2JZGE Right US/UK Only This is true for supras, other toyotas may have had these engines available in other models) Specs: The VVTi 2jzgte came in JZA80 Supra from September 1997 July 2002 Max Power: 209 5600 (280 hp) Torque (nm) 46.0 3600 (338ft/lb) Injectors: 440cc Injector Impedance: High Impedance Stock recommended Denso plugs: PK20TR11 Stock recommended NGK plugs: BKR6EKPB11 Airflow Sensor: Hot wire type airflow meter Fly by wire throttle (Still has throttle cable) Traction control is built into ECU ECU is OBDII based ECU but you cannot use the standard OBDII scanners to read error codes/diagnostics etc Rev Limit: 7200rpm Speed cut: 180km/h How VVTi Works How the ETCS-i (throttle control system) works 2JZGTE VVTI Information on February 28, 2012
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