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Manley Polished NexTek Oval Track/Endurance Valve Spring 1.570" O.D.

Manley 221441P-1

660-221441P-1

made in usa
jegs shipping
Estimated to ship directly from the manufacturer on 09/24/18
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Manley Polished NexTek Oval Track/Endurance Valve Spring 1.570" O.D. $31.99
Polished NexTek Oval Track/Endurance Valve Spring
  • 1.570'' O.D.
  • 0.750'' I.D.
  • 575 lbs./in. Spring Rate
  • 280 @ 2.030'' Installed
  • 700 @ 1.300'' Open
  • 0.730'' Max Valve Lift
  • 1.215'' Coil Bind
  • Double Spring with Damper
  • 1/pkg.

  • Manley 221441P-1 Details

    1.570'' O.D. Double Valve Springs

  • Polished Finish
  • Type of Spring: Double Coil with Damper
  • Color Code: Polished Finish
  • Installed Height and Pressure: 2.030'' @ 280 lbs./in.
  • Open Height and Pressure: 1.300'' @ 700 lbs./in.
  • Spring Rate: 575 lbs./in.
  • O.D. of Outer Spring: 1.570''
  • I.D. of Outer Spring: 1.121''
  • I.D. of Inner Spring: 0.750''
  • Coil Bind height: 1.215''
  • Weight: 170 grams
  • Damper Included: Yes

    Click Here to see 660-221441 Valve Spring Load Chart

  • Specifications:

    Installed Height (in)
    2.030 in.
    Open Height (in)
    1.300 in.
    Open Pressure (lbs)
    700 lbs.
    Seat Pressure at Installed Height (lbs)
    280 lbs.
    Number of Springs Per Valve
    Dual
    Outside Diameter of Outer Spring (in)
    1.570 in.
    Coil Bind Height (in)
    1.215 in.
    Damper Spring Included
    Yes
    Spring Rate (lbs/in)
    575 lbs./in.
    Quantity
    Sold individually
    Manufacturer's Part Number:
    221441P-1
    Shipping Weight:
    0.45
    Package Height:
    3.3
    Package Depth:
    3.1
    Package Width:
    3

    NexTek Valve Springs...Better By Design!

    Manley's NexTek valve springs are the latest in valve spring technology. The main benefit of the NexTek springs is that they resist degradation of spring pressure in the later stages of a race. This is critical in oval track racing, where an engines valve train is abused for a long period of time. The spring inside diameter is chamfered for retainer clearance. The state-of-the-art winding process, thermal treatment and finishing practices cannot be duplicated, making these springs unique. The specially processed premium-grade chrome silicon is virtually free of impurities or surface irregularities, making for a high-quality, high-performance valve spring. NexTek Series valve springs have been tested by leading engine builders and are confirmed to be the best performing valve springs on the market today!

    Features:
  • No degradation of spring pressure in the later stages of a race
  • Manufactured from ''super clean'' HiTensile Chrome Silicon steel
  • Shotpeened to MIL Specs for maximum fatigue life
  • Proprietary multistep heat treating minimizes load loss
  • Tightly controlled open end flatness reduces valve stem side loading
  • Tip thickness designed to eliminate overload breakage
  • No degradation of spring pressure in the later stages of a race
  • Specially processed premium-grade chrome silicon that is virtually free of impurities or surface irregularities
  • NexTek Series valve springs have been tested by leading engine builders and are confirmed to be the best performing valve springs on the market today
  • These Manley NexTek valve springs are available in Polished and Super Finished versions to reduce friction, improve fatigue life and minimize load loss
  • Super Finished is multi-step surface enhancement that significantly improves fatigue strength

    Click Here to see Valve Springs Load Chart

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