Precision meets performance in this .015" shim, tailored to refine valve spring behavior in GX200 Clones for that extra burst of speed racers crave.

• Promotes tighter valve lash for responsive handling
• Withstands thermal expansion in hot laps
• Simplifies achieving optimal cam timing

SKU JF168-1246 is your ally in keeping the engine bay tidy and efficient, ensuring every race starts with a finely tuned machine ready to accelerate past the competition.

Frequently Asked Questions

Q: Why should I use a .015" valve spring shim in my GX200 clone engine?

A: A .015" shim is used to increase the installed height pressure of your valve springs. This helps prevent valve float at higher RPMs and ensures your valvetrain remains stable during aggressive racing conditions.

Q: How do I know if I need a .015" shim or a different size?

A: The shim size depends on your specific cam profile and desired spring pressure. Racers typically use shims to fine-tune the seat pressure to match the manufacturer's specifications for their specific camshaft, ensuring optimal valve timing and performance.

Q: Is it possible to stack these shims?

A: While you can use shims to reach a specific height, it is generally recommended to use the single most appropriate shim size for your setup to maintain structural integrity and prevent potential binding or misalignment.

Q: Does this shim work with stock valve springs?

A: Yes, this shim is designed to work with GX200 clone valvetrains. It is a common tuning tool for both stock-class engines and modified builds to ensure consistent spring tension.

Q: What is the best way to install these shims?

A: The shim should be placed at the base of the valve spring pocket in the cylinder head before installing the valve spring. Ensure the surface is clean and free of debris to ensure the spring sits perfectly flat.

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