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Valve Spring, Dual, 1.580 in. Outside Diameter, 535 lbs./in. Rate, 1.170 in. Coil Bind Height, Each
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Overview
Brand:
Manufacturer's Part Number:
221443-1
Part Type:
Product Line:
Summit Racing Part Number:
MAN-221443-1
UPC:
807298023670
Valve Spring Style:
Standard
Number of Springs Per Valve:
Dual
Maximum Valve Lift (in.):
0.730 in.
Retainers Included:
No
Outside Diameter of Outer Spring (in.):
1.580 in.
Coil Bind Height (in.):
1.170 in.
Damper Spring Included:
No
Spring Rate (lbs./in.):
535 lbs./in.
Inside Diameter of Inner Spring (in.):
0.832 in.
Locks Included:
No
Valve Stem Seals Included:
No
Valve Springs Coated:
No
Quantity:
Sold individually.
Installed Height (in.):
1.950 in.
Seat Pressure at Installed Height (lbs.):
235 lbs.
Open Height (in.)(application):
1.250
Open Pressure (lbs.):
610 lbs.
Remanufactured:
No
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.
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Some parts are not legal for use in California or other states with similar laws / regulations
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