NEXTEK VALVE SPRINGS, RETAINERS, LOCATORS, AND LOCKS -
learn more about our valve spings,
retainers,
locators,
locks
Manley valve springs are wound from super clean alloy. Each design minimizes stress to ensure long service life with high lift camshafts. Retainers are manufactured in our own double spindle CNC machines to exacting tolerances and precise installed height specifications. Locators are manufactured in our own CNC lathes. Heat treated and black oxided after machining. Valve locks are manufactured in our own Swiss turning centers with rigid control over the all-important angle to ensure precise mating with the retainer. |
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| NEXTEK VALVE SPRINGS - learn more about our valve springs |
| Part No. |
Description |
Max Valve Lift |
O.D. |
I.D. |
Installed/Open Pressure |
Rate (lbs/in) |
Coil Bind |
 |
| Super Finished Single Conical Ovate Wire |
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| 221431-16* |
Chrysler Hemi 5.7L, 6.1L
High Performance Street/Strip |
.650" |
1.076" Top
1.311" Bottom |
.650" Top
.885" Bottom |
145 @ 1.811"
370 @ 1.161"
380 @ 1.150" |
353 |
1.100" |
| 221439-16 |
Chrysler Hemi 6.4L
High Performance Hydraulic Roller |
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| * These Chrysler Hemi springs come with shims which are ONLY needed for 6.1L applications on the intake side in order to achieve the correct installed height. P/N 221431 also includes a set of piloting rings that install over the factory “Top Hat” integral valve seal to properly locate the ID of the spring on early 5.7L (thru 2008) and 6.1L applications. |
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| 7 ° TITANIUM RETAINERS & STEEL RETAINERS - learn more about our retainers |
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Valve Stem
Diameter |
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Dimensions |
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| Part # |
Quantity |
Spring |
Degree |
A |
B |
C |
Height |
Valve Locks |
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| 7° Titanium |
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| 23613-16 |
16 pcs. |
221431-16/221439-16 |
.3125" |
7° |
.935" |
.640" |
.570" |
Stock |
Manley 13093 or factory valve lock |
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| 7° Steel |
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| 23612-16 |
16 pcs. |
221431-16/221439-16 |
.3125" |
7° |
.935" |
.640" |
.570" |
Stock |
Manley 13093 or factory valve lock |
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| I.D. VALVE SPRING LOCATORS |
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| Part No. |
Quantity |
Spring # |
Locator I.D. |
Locator O.D. |
Thickness |
Shoulder Diameter |
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| 42324-16 |
16 pcs. |
221431-16 / 221439-16 |
.812" |
1.300" |
.205" |
.875" |
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| Must use ID locator P/N 42324-16 for the 2009 and up Hemi 5.7L and all 6.4L |
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| 7° MACHINED VALVE LOCKS |
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| Part No. |
Quantity |
Valve Stem |
Groove Type |
Angle |
Wgt./Pr. |
|
| 13093-16* |
16 pr. |
.3125" |
Manley Bead Loc® Single Radius |
7º |
2.2 gms |
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| * Must be used with Manley Bead Loc® single radius groove valves |
