What is the purpose of the recess on these valve locks?

The -.050 inch recess helps to properly locate the valve retainer and spring relative to the valve stem. This recess works with the taper of the retainer to create a collet effect that securely holds the components in place.

How do I know if these valve locks are the correct size for my valve stems?

When properly installed on the valve stem, there should be a small gap between the two halves of the lock. If the halves fit together with no gap, they are too large. If they fit tightly to the stem but leave a gap between the middle of the lock and the stem's outer diameter, they are too small.

Are these valve locks suitable for high-performance racing engines?

These specific valve locks are recommended for street applications with lighter valve spring loads. For more demanding racing applications with higher spring loads, other COMP Cams lock options may be more appropriate.

COMP Cams 11/32 Valve Locks Set of 100 630-100

Name: COMP Cams Super Valve Lock Eb11/32-.050 - Set of 100
Brand: COMP Cams
SKU: comp-cams-comp-cams-super-valve-lock-eb11-32-050-set-of-100-t14-4393194
Price: 265.24 USD
Availability: BackOrder

COMP Cams Super Valve Lock Eb11/32-.050 - Set of 100

$265.24

On Backorder

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

COMP Cams 11/32 valve locks, set of 100. For engine rebuilds with lighter spring loads.

Key Features

Fits 11/32 inch valve stems.
Set includes 100 valve locks.
Features a 10-degree single groove design.
Includes a -.050 inch recess.
Recommended for street applications with lighter valve spring loads.
Stamped and hardened for wear resistance.

These valve locks are designed for 11/32 inch valve stems and are suitable for engine rebuilds with lighter valve spring loads.

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Product Details

When you're rebuilding an engine, getting the valve train components right is crucial. These COMP Cams Super Valve Locks are designed for 11/32 inch valve stems and feature a 10-degree single groove with a -.050 inch recess. They come in a set of 100, which is typically enough for a complete V8 engine rebuild.

The main job of a valve lock, or keeper, is to temporarily hold the valve spring and retainer in place until the retainer's taper can properly seat around the lock. This creates a collet effect, binding the retainer and lock together. The more spring force applied, the tighter this connection becomes. These locks are specifically recommended for street applications where valve spring loads are lighter, ensuring reliable performance without needing to switch to 10-degree retainers.

It's important to note that there should always be a small gap between the two halves of the lock when they are correctly installed on the valve stem. If they fit together with no gap, they are too large. Conversely, if they fit tightly to the stem but leave a gap between the center of the lock and the outer diameter of the stem, they are too small. These locks are stamped and hardened for good wear resistance.