News of the TRIAL ZZT231 Stroker kit, known as the 3ZZ kit has rocked the Celica world.
TRIAL 3ZZ Naked Engine for MR2 Spider, Celica GT, and GTS. This is a naked engine. Just swap with the engine you have now (some modifications necessary). If you have a Celica GTS, you can use the stock fuel infectors. Otherwise you will need to go with an aftermarket application.
The complete engine includes a 2ZZ engine base with the 3ZZ kit already installed (see kit contents below). Most wiring, piping, tubing or connectors are generally not included.
For a base, a new or used 2zz engine must be provided or paid for by the customer. Original mounts are slightly modified and used. Apex-i power FC or HKS F-Con V-Pro can be used for maximum performance. The car will run normally without any fuel modifications until you start to put on the gas. Other fuel controllers such as Apex-i S-AFC might work but Power FC and VPro are recommended for best results.
After the kit you get about 220 hp and 20 kg of torque. on Japanese high octane gas (105). The Engine will hold up to 8,000 RPM. The valves are thought to be the weak point of this engine. The stock valves are generally ok up to 7,000 rpm, but if you plan on going over that, a valve kit is recommended. The valves used on the Trial S. Stock valve springs are fine. Compression for the kit is raised to 13:7.1 but it can be left at just a little over stock or even lowered.. The higher compression increases power but would cause problems with lower octane gas. You may also special order low compression pistons. Note: Quality of gasoline varies from country to country. The above stats were acquired with Japanese 105 octane gas.
The 3zz internals kit includes:
Engine Crank, Connecting Rods, Pistons,
Crank End Spacer Ring, Crank End Oil Seal,
Front Spacer Washer, Metal Head Gasket.
The complete engine includes a 2ZZ engine base with the 3ZZ kit already installed (see kit contents below). Most wiring, piping, tubing or connectors are generally not included.
For a base, a new or used 2zz engine must be provided or paid for by the customer. Original mounts are slightly modified and used. Apex-i power FC or HKS F-Con V-Pro can be used for maximum performance. The car will run normally without any fuel modifications until you start to put on the gas. Other fuel controllers such as Apex-i S-AFC might work but Power FC and VPro are recommended for best results.
After the kit you get about 220 hp and 20 kg of torque. on Japanese high octane gas (105). The Engine will hold up to 8,000 RPM. The valves are thought to be the weak point of this engine. The stock valves are generally ok up to 7,000 rpm, but if you plan on going over that, a valve kit is recommended. The valves used on the Trial S. Stock valve springs are fine. Compression for the kit is raised to 13:7.1 but it can be left at just a little over stock or even lowered.. The higher compression increases power but would cause problems with lower octane gas. You may also special order low compression pistons. Note: Quality of gasoline varies from country to country. The above stats were acquired with Japanese 105 octane gas.The 3zz internals kit includes:
Engine Crank, Connecting Rods, Pistons,
Crank End Spacer Ring, Crank End Oil Seal,
Front Spacer Washer, Metal Head Gasket.
