The TOMEI POWERED CPB-2J36H (P/N 216011) is essentially a pre-assembled high-performance 2JZ-GTE bottom end designed for JZA80 Supra and JZS161 Aristo applications.
TOMEI introduced this High-Comp version in 2025, using a higher-compression forged piston.
🔧 Core specification
|
Component |
CPB-2J36H |
|
Base engine |
Toyota 2JZ-GTE |
|
Bore |
87.0 mm |
|
Stroke |
100.0 mm |
|
Displacement |
3,565 cc / 3.6 L |
|
Pistons |
TOMEI forged Ø87.0 Hi-Comp |
|
Connecting rods |
TOMEI forged H-beam, 139 mm |
|
Crankshaft |
TOMEI forged full-counterweighted |
|
Main bearings |
TOMEI Competition |
|
Rod bearings |
TOMEI Competition |
|
Main fasteners |
ARP reinforced studs |
|
Main caps |
TAITAN billet reinforced |
|
Cylinder block |
Standard 2JZ block |
|
P/N |
216011 |
These specifications are confirmed by TOMEI’s current catalogue.
🧠 Why the 3.6L configuration is interesting
The important number isn’t simply “3.6L.” It’s the combination:
87 mm bore × 100 mm stroke
versus the standard 2JZ’s approximately 86 mm × 86 mm geometry.
That extra 14 mm of stroke substantially changes the engine’s character:
Longer stroke → greater displacement → more crank leverage → stronger low/mid-range torque → broader usable powerband.
The 3,565 cc capacity also gives a large turbo more exhaust-energy support without requiring extremely high engine speed to generate torque.
TOMEI specifically describes the 2JZ-36 concept as producing a wide torque band with strong response, including the ability to support large single-turbo configurations.
🔥 What makes the 2J36H different?
This is where the H matters.
The regular CPB-2J36 uses a TOMEI forged Ø87 mm piston, while the CPB-2J36H uses a Hi-Comp forged piston. Everything else in the major rotating assembly is essentially built around the same 87 × 100 mm architecture.
Think of it as:
CPB-2J36
3.6L + forged rotating assembly + relatively broad compatibility with high-output turbo builds
CPB-2J36H
3.6L + forged rotating assembly + higher compression + greater emphasis on response, torque and competition-oriented performance
TOMEI specifically warns that the High-Comp version requires high-octane race fuel or ethanol-blended fuel to control knock.
⚙️ The really clever part: the bottom-end architecture
The CPB-2J36H isn’t just a collection of aftermarket parts.
TOMEI supplies the pistons, crankshaft and connecting rods already assembled, turning the product into a prepared tuning block rather than making the builder source and assemble each major rotating component individually.
The architecture is:
87 mm forged piston
↓
139 mm forged H-beam rod
↓
100 mm forged full-counter crank
↓
TOMEI Competition bearings
↓
TAITAN billet reinforced main caps
↓
ARP main studs
↓
2JZ-GTE block
The reinforced main-cap arrangement is particularly important because increasing displacement and cylinder pressure raises the loads transmitted through the crankcase.
🧬 Why the 100-mm stroke is significant
The 2JZ is famous partly because its original architecture is extremely robust. TOMEI takes that foundation in a different direction:
86 × 86 mm → ~3.0 L
becomes
87 × 100 mm → 3.565 L
So the engine gains approximately 18% displacement.
That means you don’t necessarily need to chase enormous RPM to generate impressive output.
A simplified way to visualize it:
3.0L 2JZ
████████████████
3.6L 2JZ
████████████████████
The additional displacement effectively gives the turbocharger a larger “engine behind it.”
🏁 CPB-2J36H vs CPB-2J36
|
Characteristic |
CPB-2J36 |
CPB-2J36H |
|
Displacement |
3.565L |
3.565L |
|
Bore × stroke |
87 — 100 mm |
87 × 100 mm |
|
Forged piston |
Yes |
Yes, Hi-Comp |
|
Forged crank |
Yes |
Yes |
|
H-beam rod |
Yes |
Yes |
|
Billet main caps |
Yes |
Yes |
|
Compression |
Lower |
Higher |
|
Response |
Excellent |
Potentially sharper |
|
Knock margin |
Greater |
Lower |
|
Fuel requirement |
More flexible |
High-octane/ethanol-oriented |
|
Competition focus |
High |
Very high |
TOMEI’s own positioning is essentially that 2J36H is for applications seeking additional low-speed torque and a broader powerband, particularly competition use.
- Listed weight: approximately 110 kg
🧠 Takeaway
The CPB-2J36H is best understood as a 3.565-liter, forged, high-compression evolution of the 2JZ-GTE bottom end.
Its engineering philosophy is not simply:
“Make the 2JZ stronger.”
It’s:
“Make the 2JZ larger, increase its torque density, increase response, strengthen the rotating assembly, and make the engine a better foundation for a serious turbo system.”
The particularly interesting combination is:
87 mm bore + 100 mm stroke + Hi-Comp forged piston + full-counter crank + H-beam rods + billet main caps + ARP studs.
That makes the CPB-2J36H one of TOMEI’s most sophisticated modern interpretations of the legendary 2JZ-GTE architecture.
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