VALVE SPRINGS

KVS SERIES +

Kelford Cams Extreme Valve Spring Compression

Do Valve Springs Increase Horsepower?

VALVES & SPRINGS

Upgrading Retainers with Springs?

Kelford Cams racing valve spring kits use various design styles. What are the differences in beehive, single parallel, dual spring & what does ovate wire mean?

All spring retainers are made in house with highest quailty titanium

Beehive

Shaped like a beehive, which allows for a smaller retainer to be used, reducing the valvetrain mass. Pac Racing Springs

4B11T Beehive Valve Springs KVS11-BT
4B11T Premium PACALOY™ Beehive Springs
EJ20 / EJ25. Premium Beehive Valve Springs with Retainers.
EJ20/EJ25 Ovate wire Beehive Springs

Ovate Wire

Ovate wire has a non-circular cross section which reduces max wire stress compared to round wire. Its shape also allows for more spacing between coils, enabling greater valve lift before coil bind occurs.

Single Parallel

Single parallel have a cylindrical shape with a constant outside diameter. They can be packaged together to create dual or triple design.

KA24DE Single Valve Spring
pac1209x
Chevrolet LS1 Dual Springs

Dual

The smaller spring inside the larger outer spring manages spring surge and dissipates vibrations. An interference fit damps these vibrations, preventing damage to the valvetrain.

Compressing Valve Springs
ACHIEVING MAXIMUM

Valve Spring Compression / Pressure

Designing the overall valve spring package is a balancing act of several factors:

  • Operating RPM
  • Mass of the valvetrain
  • Mild/Extreme boost or naturally aspirated
  • What space the OEM cylinder head has provided to work with.

SPRINGS WITH RETAINERS

All titanium Retainers are made in house by the expert Kelford Team.

VALVE COMPRESSION TOOL

FIND THE RIGHT VALVE TRAIN UPGRADES

Pac Racing Spring

Kelford Cams has partnered with PAC Racing to provide valve springs made to our specifications. We use only the highest quality materials and techniques for maximum reliability in performance engines. Our cam lobe profiles are designed with our valve spring package to ensure adequate spring force for controlling cam profile at maximum RPM. We also analyze valvetrain harmonics to prevent spring surge within the engine’s operating range. We recommend using a Kelford Cams KVS  spec range with our camshafts.

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