So there were some posts awhile back asking about the trial and brashboy stoker kits for the 2zz. I found these answers on the club celica forum. Thanks to those on club celica for letting me gank these. Hope this helps folk.
Scott at TRIAL responded . . . .
I have a few questions.
Does the 3zz internals kit for the Celica Stroker increase the displacement of the engine?
Yes, it becomes a 2 liter engine.
Is it possible to run a 13:7:1 compression on 93 octane gas? If so does the 3zz internals kit come with the stock compression pistons?
Weve never tried it on 93 octane so we dont know for sure. The kit comes with modified stock pistons.
What exactly does the valve kit do?
The stock valves for the 2zz engine are very weak and bend when too much time is spent in the 7300+ rpm range. The valves in the kit are stronger.
Does this engine use the VVTL-i like the 2zz ? At what point does lift engage? What is the redline?
When the engine is balanced, the redline is 8500, I believe. The lift can be set at any point. I think it is set at 6300.
Can the power FC be used to adjust when lift engages and what the redline is on a 2zz (and if the 3zz has VVTL-i, in the 3zz) engine?
Can aftermarket parts that work on the 2zz (like a Cold Air Intake
, exhaust system, headers, pulleys etc . . ) work in the 3zz?
The parts you mentioned can all be used.
The guys at BRASH BOY said . . .
What is the compression ratio of the 2,000cc kit's pistons?
Compression Ratio, 1:13.2
Is a Power FC or other kind of fuel controller needed to readjust fuel, or does this kit run normally without modifications?
Only Power FC, don't need other controller units. (no modifications)
Can the 2,000cc kit work on 93 octane pump gas?
What is the power output (horsepower and torque) of this kit, to the wheels (not to the crank)?
horsepower 235 hp, torque 23k (So powerful)
Brash Boy, CHIBA
Also, I talked to the guys at TRD
. They said their exhaust manifold (header) was designed for high compression (13:1) race applications, which is why it makes such low gains on our 11:5 celica GTS.