What is the purpose of a valve spring shim?

Valve spring shims are used to adjust the installed height of the valve spring. This is important for ensuring the spring is compressed to the correct pressure, which helps prevent valve float and ensures proper valve train operation.

What material are these shims made from?

These valve spring shims are made from durable steel, providing a strong and stable base for your valve springs.

What does '.030 Undersize' mean for this shim?

The '.030 Undersize' designation means this shim is 0.030 inches thinner than a standard shim. This allows you to make fine adjustments to the valve spring's installed height, often needed when using aftermarket parts.

Specifications

Brand: Manley Performance
Part #: 02233-50
UPC: 807298042992

Manley Valve Spring Shim, SHIMS-1.250 X .030

Name: Manley Valve Spring Shim, SHIMS-1.250 X .030
Brand: Manley Performance
SKU: manley-performance-manley-valve-spring-shim-shims-1-250-x-030-t14-880037
Price: 39.42 USD
Availability: BackOrder

$39.42

On Backorder

Order now to reserve yours — we'll ship as soon as stock arrives. Full refund if we're unable to fulfill.

Manley Performance valve spring shim. Corrects spring height for improved valve train stability.

Key Features

Fits under valve springs to adjust installed height.
Made from durable steel for a solid base.
Precisely machined for a flat, stable surface.
This is a .030 inch undersize shim.
From Manley Performance, a well-known name in engine components.

⚠️ CA WARNING: This product can expose you to chemicals known to the State of California to cause cancer and/or birth defects or other reproductive harm. Learn more

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About this part

Product Details

When you're rebuilding the top end of your engine, getting the valve spring installed height just right is critical for proper valve train function. These valve spring shims from Manley Performance are designed to help you achieve that precise height. They're made to fit under the valve spring, allowing you to make fine adjustments to the installed height, which is especially important when using aftermarket camshafts or cylinder heads that might alter the original spring seat depth.

Manley is known for making well-built engine components, and these shims are no exception. They are made from durable steel and are precisely machined to ensure they sit flat and provide a stable base for your valve springs. This .030 inch undersize shim is a common size used to account for slight variations or to dial in the perfect installed height for optimal spring pressure and valve control. Using the correct installed height helps prevent valve float and ensures your valvetrain operates as intended.