Reliable .008 Inch Clone Valve Spring Shim for Balanced Power Delivery

• Stabilizes valve action during rapid shifts
• Reduces energy loss from improper seating
• Perfect for intermediate tuning levels

Imagine your kart pulling harder out of turns without hesitation—this .008" shim makes it real by ensuring valves operate in harmony with your rev-happy Clone engine.

Incorporate SKU JF168-1246-8 into your maintenance routine for a more organized trackside experience and the edge needed to lead the pack.

Frequently Asked Questions

Q: Why do I need a .008 inch valve spring shim for my Clone engine?

A: A .008" shim is used to adjust the installed height of your valve springs. By adding this shim, you increase the spring pressure slightly, which helps prevent valve float at higher RPMs and ensures the valve seats firmly for consistent power delivery.

Q: How do I know if I need a .008 shim versus a different size?

A: Choosing the right shim depends on your specific engine build and valve spring tension requirements. If you are experiencing minor power loss at high RPMs, a .008" shim is a great starting point for fine-tuning. If you need more or less pressure, you may need to experiment with different thicknesses.

Q: Is it difficult to install a valve spring shim?

A: Installation requires a valve spring compressor to remove the retainers and springs. Once the spring is removed, the shim is placed in the spring pocket on the cylinder head before reinstalling the spring. Always ensure the shim is seated flat and centered.

Q: Can I stack multiple valve spring shims?

A: While it is possible to stack shims, it is generally recommended to use a single shim of the correct thickness to ensure stability and prevent the spring from binding. If you find yourself needing significant height adjustment, consider checking your spring specs or using a single thicker shim.

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