Uprated valve springs TOYOTA 2JZ-GTE

The SUPERTECH and FERREA uprated spring kits are compatible with the 3.0 24V 2JZ-GTE engine.

Technical characteristics

• Spring type: single
• Outer diameter of the conical spring: mm
• Inner diameter of the conical spring: mm
• Seat pressure / installed length: kg @ mm (intake) / kg @ mm (exhaust)
• Seat pressure / lift: kg @ mm (intake) / kg @ mm (intake)
• Max lift: mm (intake) / mm (exhaust)
• Springs delivered with titanium retainers
• Reference: SPRK-2081-SP

• Spring type: double
• Outer diameter of the conical spring: mm
• Inner diameter of the conical spring: mm
• Seat pressure / installed length: kg @ mm (intake) / kg @ mm (exhaust)
• Seat pressure / lift: kg @ mm (intake) / kg @ mm (intake)
• Max lift: mm (intake) / mm (exhaust)
• Springs delivered with titanium retainers
• Reference: SPRK-TS1015

SUPERTECH valve springs are made from a high-quality chrome silicon vanadium steel alloy. This alloy has the advantage of offering superior performance and reliability, especially at high revs, and has better structural memory. SUPERTECH uprated valve springs are computer designed to ensure harmonics remain under control and stress levels remain within material fatigue diagrams.

The SUPERTECH retainers, for their part, are made of a titanium alloy and machined by CNC to obtain the best fit.

Technical characteristics

• Spring type: double
• Max lift: 12.00mm
• Outer diameter: 20.12mm/27.13mm
• Inner diameter: 14.78mm/20.12mm
• Seat pressure at installation: 41kg @ 33mm
• Pressure load: 97kg @ 23mm
• Compressed spring height:
• Reference: KT4046

• Spring type: double "high boost"
• Outer diameter: mm
• Inner diameter: 15.52mm
• Seat pressure / installed length: 36.29kg @ 37.00mm (intake) / 38.56kg @ 36.50mm (exhaust)
• Seat pressure / lift: 81.65kg @ 27.00mm (intake) / 83.92kg @ 26.50mm (exhaust)
• Max lift: 11mm (intake) / 10.5mm (exhaust)
• Reference: KT4047

As with SUPERTECH, FERREA uprated valve springs are made from chrome vanadium steel and receive a heat treatment. These FERREA springs are developed so that harmonics and fatigue at high revs remain under control (this helps avoid the springs entering resonance), they provide stability and reduced wear on the cylinder head components. The design of these springs also limits pressure loss.

Machined by CNC, the FERREA retainers are made of titanium.