toyota forged piston

Precision forging T6 Heat Treatmeng CNC-Machining Weigh Balance +-1g

Material 4032 or 2618 aluminium alloy;

Excellent piston blank;

Delicate CNC maching;

applicable for high performance engine.

we are one of the professional forged racing piston manufacturers based in Chongqing , China . Competed with JE, Wiseco etc., we provide the most superior products in China for all of the world.Our forged piston suitable to racing car,Automotive,Sportman Compact,and Powersport etc.

Material: aluminum alloy 4032 or alminum alloy 2618

Bore:51-106mm

Cylinder:4/8/16

Pin:steel alloy H13

Suitable to:Chevy, Ford, VW, Nissan, Honda, Mitsubishi and etc.

Advanced, lightweight forging that eliminates stress concentrations for superior strength

Up to 20% lighter than traditional equivalent

High-silicon 4032 aluminum alloy for reduced piston-to-wall clearance and quiet operation.

Accumulator grooves for improved ring seal

Designed for normally aspirated or moderate forced induction/nitrous applications.

Main Features:

1) alloy 4A11, 4032, 2618

2) anti-high temperature

3) high performance index

4) anti-friction

4032 forged piston blank

Pistons that are made from 4032 wrought aluminum alloy are designed for street/strip applications utilizing compression ratios that are compatible with pump gas. These pistons also provide a quieter engine on cold start-up.

Physical Properties of 4032

Nominal Density 2.68 g/CC. 097 lb/in3

Mechanical Properties of 4032

Tensile Strength, Ultimate 380 MPa 55, 000 psi

Tensile Strength, Yield 315 MPa 46, 000 psi

Modulus of Elasticity 79 GPa 11, 400 psi

Fatigue Endurance Limit 110 MPa 16, 000 psi

2618 forged piston blank

Pistons made from 2618 wrought aluminum alloy are designed for higher performance applications such as FlyWeight or domed highcompression pistons. These environments necessitate the higher tensile strength 2618 aluminum alloy.

Physical Properties of 2618

Nominal Density 2.81 g/CC. 100 lb/in3

Mechanical Properties of 2618

Tensile Strength, Ultimate 440 MPa 64, 000 psi

Tensile Strength, Yield 370 MPa 54, 000 psi

Modulus of Elasticity 74 GPa 10, 400 psi

Fatigue Endurance Limit 125 MPa 18, 000 psi

Coefficient of Thermal Expansion

2618 aluminum expands approximately 15% more than 4032 aluminum, thus the 2618's initial piston-to-wall clearance has to be 15% greater. This difference is most noticeable during a cold engine start. When cold, the 2618 piston can rock back and forth producing a slight noise (sometimes referred to as piston slap)

Until the aluminum expands. Both types of aluminum have approximately the same clearances once the pistons have expanded and the engine is running at operating temperatures. Temperature Range Average CoefficientC F μm/m K μin/in F

20 to 200 68 to 392 23.2 12.9

Coefficient of Thermal Expansion for 2618

Temperature Range Average Coefficient

C F μm/m K μin/inF

20 to 200 68 to 392 20.2 11.2

EXAMPLE: When measured at room temperature, a 4 inch diameter piston made from 4032 measures 4.000". If the same piston weremeasured at 375, the piston would measure 4.0034".

Coefficient of Thermal Expansion for 4032

Temperature Range Average Coefficient

C F μm/m K μin/inF

20 to 200 68 to 392 20.2 11.2

EXAMPLE: When measured at room temperature, a 4 inch diameter piston made from 4032 measures 4.000". If the same piston weremeasured at 375, the piston would measure 4.0034".

toyota forged piston