High-Accuracy .012 Inch Clone Valve Spring Shim for Superior Valve Control

Struggling with inconsistent valve action in your kart's Clone engine? This .012" shim addresses that by providing precise adjustments to spring preload, promoting even compression and explosive power delivery.

Key advantages include:

• Improved fuel efficiency through better valve synchronization
• Longer spring life under racing stresses
• Ideal for setups targeting 8,000+ RPM

SKU JF168-1246-12 is a must-have for mechanics fine-tuning for victory. Its durable construction withstands the heat of competition, helping you organize your pit tools while pushing for podium finishes.

Frequently Asked Questions

Q: Why do I need a .012" shim for my Clone engine?

A: Valve spring shims are used to adjust the installed height of your valve springs. By adding a .012" shim, you increase the spring preload, which helps prevent valve float at high RPMs and ensures consistent valve timing for better engine performance.

Q: How do I know if I need a .012" shim or a different size?

A: The correct shim size depends on your specific valve spring pressure requirements and your engine's target RPM. If you are experiencing valve float or inconsistent compression, you may need to measure your current spring pressure and adjust using different shim thicknesses to reach your target seat pressure.

Q: Can I stack multiple valve spring shims?

A: While it is possible to stack shims, it is generally recommended to use the single most appropriate thickness to achieve your desired preload. Always ensure that the total shim stack does not cause the valve spring to reach "coil bind" at maximum lift.

Q: Is this shim compatible with standard 196cc Clone engines?

A: Yes, this shim is designed for standard Clone (GX200 style) valve train setups. It is a precision component intended for mechanics fine-tuning their engine for racing applications.

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