Diamond Piston KitToyota 2JZ-GTE 86.00 9.0:1 -11.50cc
Diamond Pistons DIA-37021-6 – Forged Piston Set Toyota 2JZ-GTE
The Diamond DIA-37021-6 set is dedicated to the most demanding builds based on the legendary 2JZ series engines. These pistons are engineered for maximum durability, heat resistance, and exceptional stability under extreme power output and high RPM—making them a top choice for motorsport and advanced tuning applications.
Key Features
Forged from aerospace-grade 2618T6 aluminum – Delivers outstanding resistance to material fatigue under high boost pressures and heavy mechanical loads.
Precisely engineered piston crown and valve reliefs allow compatibility with aggressive cam profiles and high valve lifts, ensuring seamless fitment for stroker and turbo setups.
Moly Coated Skirts – A low-friction molybdenum coating on the piston skirts significantly reduces friction losses and protects the cylinder liner.
Forced pin oilers – An active pin oiling system enhances pin life under extended high-rpm and heavy side-load conditions.
Complete piston ring set included – Optimized tension and profiles, suitable for turbocharged engines running on E85 or methanol.
Rugged full-floating 22mm wrist pins – Resilient under extreme pressure and temperature, including nitrous applications.
Typical Applications
Top-fuel, PRO drift, drag, and Time Attack builds breaking 1000 HP.
Construction of high-powered street/strip 2JZ-GTE and 2JZ-GE stroker engines, especially in turbo setups.
Replacement for OEM pistons when converting 2JZ-GE to high boost.
Technical Specifications
| Parameter | Value |
|---|---|
| Cylinder bore | 86.00 mm |
| Compression ratio* | 9.0:1 (dish −11.5 cc) |
| Compression height (CH) | 31.62 mm (1.245″) |
| Material | Forged 2618 T6 aluminum |
| Wrist pin | Ø 22 mm × 57.2 mm, heavy-wall, full-floating |
| Ring grooves | 1.0 / 1.2 / 2.8 mm |
| Quantity per set | 6 pistons |
| Compatible rods | Length 142 mm (5.590″), pin full-floating |
| Valve pocket depth | intake 6.22 mm / exhaust 5.84 mm |
| Application | 2JZ-GTE / 2JZ-GE stroker, 45cc head |
*With a 90 mm stroke and 45cc combustion chamber.
Kit contents
6 × Diamond Pistons DIA-37021-6
6 × 22 mm wrist pins + locks
6 × complete piston ring sets (1.0 / 1.2 / 2.8 mm)
Installation instructions and assembly recommendations
Installation guidelines
Recommended piston-to-cylinder clearance: at least 0.10 mm (street use); follow manufacturer's guidance for motorsport.
Check valve-to-piston clearance with lifts above 11 mm and deepen reliefs if needed.
Set ring gaps according to your intended boost level: e.g., 0.0055″ × bore for street, >0.0065″ for boosts exceeding 30 psi.
Recommended oil: 5W-40/15W-50 with high ZDDP and frequent changes in builds over 800 HP.
Choose Diamond Pistons DIA-37021-6 – components designed for those who demand no compromise in engine construction!