TRIAL TITANIUM MUFFLER FOR LOTUS (2ZZ ENGINE)

Exige/Elise V1 Muffler (Center Tip)

TRIAL's main goals for this muffler were power and sound. The results moved them to nick name the muffler “Lotus Sound”, because you wouldn’t guess that it was a Toyota under the hood.

TRIAL ZZT231 Oil Cooler for Celica GT, and GTS

With "forced induction" and "high power" becoming common words within the 2000+ Celica world, new methods are needed to keep these engines alive and fast.
That's where the TRIAL ZZT231 Oil Cooler Kit comes in. This oil cooler is the result of TRIAL Track Celica technology and experience.

The base parts of the kit are from the well known and respected HKS. The kit is designed for Turboed and Supercharged Celica's alike. It fits in front of the radiator and is designed to work with inter cooler applications as well. This allows the owner to retain the stock windshield washer tank.

Some FAQ

"What do I need an oil cooler for?"

The 1zz and 2zz engines were not designed for the high power and heat brought on by your after market forced induction. By keeping your oil cooler, it not only protects your engine and oil from breakdown in high heat, it also helps you maintain your peak power over sustained driving situation.

"Do I need an oil cooler if I'm normally aspirated (no forced induction).

Yes, if you drive hard and long like in circuit and Saturday Track Run situations.

TRIAL Throttles for 2ZZ

Original throttle	Trial big throttle
Torque values	Torque values
3000rpm 16.5 kgm	3000rpm 17.1 kgm
4000rpm 17.1 kgm	4000rpm 17.8 kgm
5000rpm 16.9 kgm	5000rpm 17.2 kgm
6000rpm 15.6 kgm	6000rpm 15.8 kgm
6800rpm 18.7 kgm	6700rpm 19.3 kgm

Original throttle	Trial big throttle
Maximum Power 181.8 ps	185.8 ps maximum power (up 4 ps!)
Maximum torque 18.7 kgm	19.3 kgm maximum torque (up 0.6 kgm!)

NEW strengthen alternator from TRIAL for 2ZZ

Toyota 2ZZ engine for strengthen alternator is finalized.
Pure 80 Amp, 100 Amp it to the ignition system have been increased, Power UP,improvement in fuel efficiency. Also, the alternator will benefit light intensity lights and electronic goods.

NEW small lightweight engine crankshaft from TRIAL for 2ZZ

Toyota's 2ZZ engine crankshaft pulley is finalized.
Crank pulley is small, lightweight and can reduce the moment of inertia in response to the engine, improving the accelerator response and the high turnover of power to UP.

3ZZ Stroker kit for Toyota Celica

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.

• Official Trial site (Japanese)

How to install TRIAL Header for GT and GTS

This header is designed for the Japanese domestic market and may not work with cars outside of Japan.
This part is intended for off road and race track applications only. Use of this part on public roads of many countries is illegal.
This part should only be installed by an experienced professional. Amateur installation may result in damage to the header and your car! Trial and Trial USA are in no way responsible for damage or injury that may occur.

Header Installation. (Most work can be done from under car)
1) Remove engine mud shields, front and rear engine mount bolts and center support beam.
2) Remove front pipe and muffler if necessary.
3) Remove heat shields and muffler mid section. Save stock gaskets and screws.
4) Remove top and bottom heat shields of stock header.
5) Remove L brace that is connected to lower part of header..
6) Remove manifold bolts and nuts (7 total).
7) Remove stock manifold, without removing stock gasket between block and header. Take off stock flange gasket and put it on Trial Header.
8) Carefully insert Trial header. Tilting engine makes this task easier (two people).
9) Loosely apply bolts and nuts from inside to out of header and block.
10) Re-Install L brace to block and hand tighten to header after drilling a larger hole in brace where you see the previous bolt's mark ( about 4 mm to the outside).
11) Tighten down all bolts and nuts inside to out.
12) Attach stock upper manifold heat shield. Lower shield will not fit.
13) Re-install stock engine mounts.
14) Re-install down pipe and center pipe, reusing all stock screws and gaskets. Tighten spring bolts all the way.
15) Re-install stock heat shields to center piece.
16) Re-install Engine mud shields.





Make sure to use stock gasket.


















Make sure to use factory bolts








Source: Trial Japan

TRIAL Header for GT and GTS

This new Exhaust Manifold was built for TRIAL'S Celica Track Car. It will work on the 2ZZ and 3ZZ.
The manifold turned out gains of 10hp on a stock Celica GTS with no mods to the computer!
It was tested on a US spec car and similar gains were archived.

Celica GT 1ZZ header is available

Installation Instructions click here


Celica+N1Muffler:Power


Celica+N1Muffler:Stats


Celica+n1+header:Power


Celica+n1+header:Stats

TRIAL Celica Aero Version 2

Version 2 includes a redesigned side step and front bumper. Large Carbon Canards are an option for the Version 2 Front Bumper.