GR Yaris Closed Decking service G16E-GTS

For GR Yaris, GR Corolla, Lexus LBX Morizo RR G16E-GTS engine

Our Closed Decking service for Toyota GR engine blocks is designed to reinforce the engine’s structural integrity, especially at the top of the cylinder walls where combustion pressure is at its peak. This process involves machining the top plane of the engine case to accept precision CNC machined inserts, providing full support to the cylinder walls and minimizing the risk of flexing or cracking under high power and boost.

Key Benefits:

• Enhanced Cylinder Support: The CNC machined inserts provide comprehensive support to the cylinder walls at their most vulnerable point, improving durability and allowing the engine to handle higher performance demands.
• Optimized Cooling: All coolant bores present in the head gasket are carefully integrated into the supporting inserts, ensuring that the engine’s cooling capacity remains unaffected. An additional cooling passage can be machined to promote efficient coolant flow under the head gasket, further enhancing engine reliability.

Whenever we perform a closed-decking service, we recommend boring and honing the block to suit the next oversize pistons to restore roundness and ensure correct piston-to-wall clearances.

Comprehensive Service:

We offer convenient pickup and re-delivery options for your engine case once all chosen engineering processes are complete. Your engine case will be fully prepared for the assembly process, which can either be completed by our professional engine builders or undertaken by you.

Contact us today to discuss how our Closed Decking Service can elevate your engine’s performance and reliability.

Important: This service is done using block that you provide. If new block is needed we can provide it - cost for that is extra 2500Eur.