Brand:
Manley
Manufacturer's Part Number:
221455-16
Part Type:
Valve Springs
Product Line:
Manley NexTek Valve Springs
UPC:
807298039749
Valve Spring Style:
Standard
Number of Springs Per Valve:
Dual
Maximum Valve Lift (in.):
1.000 in.
Retainers Included:
No
Outside Diameter of Outer Spring (in.):
1.500 in.
Coil Bind Height (in.):
1.130 in.
Damper Spring Included:
No
Spring Rate (lbs./in.):
797 lbs./in.
Inside Diameter of Inner Spring (in.):
0.719 in.
Locks Included:
No
Valve Stem Seals Included:
No
Valve Springs Coated:
No
Remanufactured:
No
Quantity:
Sold as a set of 16.
Manley NexTek Valve Springs
These Manley NexTek valve springs are better-designed valve springs using state-of-the-art machinery for purpose-built racing engines. They're manufactured from super-clean, high-tensile chrome silicon steel and are shot-peened to MIL specs for maximum fatigue life. They feature a proprietary, multi-step heat-treating that minimizes load loss and have computer-aided modeling to minimize valve bounce and valve gear separation. The Manley NexTek valve springs are smaller diameter and lightweight, allowing engines to rev higher faster. They have an extended tip thickness designed to eliminate overload breakage, and their tightly controlled open-end flatness reduces valve stem side loading.
Applications
Installed Height (in.):
2.175 in.
Seat Pressure at Installed Height (lbs.):
438 lbs.
Open Height (in.)(application):
1.175
Open Pressure (lbs.):
1,235 lbs.
