|
| Proper material choice for the application is crucial to the valve performance and reliability. The extreme change of temperature to a valve in the combustion chamber area (in excess of 1600° F) and in the intake manifold area (up to -25° F), can cause "thermal fatigue." The material's ability to resist these drastic thermal variations is crucial to the valve life. This is why Ferrea is constantly testing and evaluating new materials and processes to provide the highest level of "fatigue resistance" in the industry. Here is the growing list of materials that we use in the production of our valves:
|
|
X3
Y6
EV8
EV8-Z18
EV4-N12
VV54/EV16
VV54/Nb/W
IN-751
NICKELVAC N80A
NIMONIC 90
NICKELVAC 600
NICKELVAC 800
ASTELLOY 75
PYROMET
STELLITE
|
Stell Alloy (Chromium/Silicon)
Stell Alloy (Chromium/Silicon)
Stainless Steel (Chromium/Nickel)
Stainless Steel (Chromium/Nickel) + Tungsten
Stainless Steel Hi-Temp
Stainless Steel Hi-Temp
(Nickel Base + Niobium + Tungsten)
Inconel Alloy 1.800° F
Super Alloy (Nickel Base) 1.850° F
Super Alloy (Nickel Base) 2.000° F
Super Alloy (Nickel/Chromium) 2.200° F
Super Alloy (Nickel/Chromium) 2.400° F
Super Alloy (Nickel Base)
Super Alloy (Nickel Base)
(Chromium/Tungsten)
|
Intake Valves
Heavy Duty Intake Valves
Racing Intake & Exhaust Valves
Racing Intake & Exhaust Valves
Turbo Intake & Exhaust Valves
Racing Exhaust Valves
Racing Exhaust Valves
Turbo Intake & Exhaust Valves
Racing Exhaust Valves
Turbo Exhaust Valves
Racing Exhaust Valves
Racing Exhaust Valves (Funny Car/Top Fuel)
Turbo Exhaust Valves
Turbo Exhaust Valves
Seat & Tips Applications
|
| back to top |
|
|
|
 This illustration shows our Super-Flo valves (often referred to as under-cut and/or neck down) actually reduces the stem diameter in the port area. This increases flow over straight stem valves (Flo valves) considerably, yet with no adverse effect on reliability.
We use an innovative technology that actually compresses the stem to achieve the Super-Flo effect with special rollers, maintaining and compacting the grain flow in the material. This exclusive process provides our Super-Flo valves with excellent strength and reliability. All our competitors rely on a machining process in order to achieve the Super-Flo effect. Removing material needed in this area is crucial and can lead to fractures and possible head failure.
|
| back to top |
|
|
|
In the production of our "one piece forging valve," the head of the valve is forged under a slow two-step process, to avoid damage to the material structure. The forging piece is then machined entirely to eliminate any imperfection from the forging operation. Next is the triple heat treatment, the stress-relief process, the grinding, and then the coating. Finally the valve stem is rolled to remove the rough scale and any gross imperfection on the surface. Ultrasonic tests and x-rays are then performed, piece by piece, to give each part a certified quality.
Some valves require an additional process. For example, the "neck down" valves receive a shot peened operation to prolong their resistance to valve fatigue.
|
| back to top |
|
|
|
These valves are used in professionally-built high rpm (above 8000) roller or flat tappet racing engines. Applications include Drag Racing, NASCAR, Oval & Sprint Car, Road Racing, and Motorcycle.
Special extreme duty Hi-Temperature Exhaust Valves. For use in Top/Fuel, Funny/Car, Supercharged, Nitrous, NASCAR, Off-Shore Marine, 9.0 to 1 compression restricted carburetor motors (extreme exhaust temperature present).
Extreme duty racing valves, engineered for high rpm, high horsepower racing engines. They have exclusive features, which make them the best flowing valve on the market with unequaled performance and reliability. Drag Racing, NASCAR, Oval & Sprint Car, Road Racing, Motorcycle and Off-Shore Marine.
Competition valves with higher fatigue resistance and tensile strengths than our competitors' best offering. These valves are made to withstand high spring pressure, roller and flat tappet cams, Drag Racing, Oval Track and Road Racing.
Hi-Performance stainless steel one piece forged valves, fully machined, hard chrome, and hard tip. These valves are excellent for Hi-performance Street, mildly modified Drag Racing, and Oval Track applications. |
Valves after the forging process |
Valves after completion of manufacturing process
and ready for use |
|
| back to top |
|
|
