Engine Block Guard for Honda F20 Engines

Manufactured from Billet Aluminum, offering increased cylinder rigidity, preventing cylinder cracks.

* Suitable for Honda F20 Engines.

** This product is not a bolt on solution and for properly install its necessary to milling the engine block.

You can buy the "Upgrade your block" service to send us your engine block ( without pistons, rods & crankshaft ) to milling and install the engine block guard.

The Use and Benefits of a Block Guard in Open Deck Engines

A block guard is an aftermarket reinforcement component designed to support the cylinder walls in open deck engine blocks. Open deck designs typically offer less structural rigidity around the cylinders because of the open space between the cylinder walls and the outer engine block. This design is beneficial for cooling but becomes a weakness under high-performance conditions due to potential cylinder wall flexing, cracking, or even failure.

Installing a block guard fills the open space around the cylinders with a high-strength insert—usually made from aluminum or steel—that provides added stability and prevents cylinder wall movement. This is especially important in high-boost or high-horsepower applications where cylinder pressures are significantly increased.

Key Benefits:

• Improved structural integrity of the engine block under stress.

• Prevents cylinder wall distortion, which can lead to head gasket failure or engine damage.

• Enhances reliability in forced induction setups (turbo or supercharged engines).

• Allows for higher boost levels and more aggressive tuning with less risk.

• Extends engine lifespan in motorsport or performance street use.

In summary, a block guard is a crucial upgrade for anyone looking to push the limits of an open deck engine, offering durability and peace of mind in extreme performance environments.