The ENGINE COMPLETE package is built entirely with brand new OE parts from Honda. Before assembly, all metal burrs are removed from the cylinder block and cylinder head to avoid possible stress concentration and to avoid engine damage from contamination.

The piston, piston pin and all moving parts of the conrod are carefully weighted and balanced within 0.02g of tolerance on each cylinder, translates to the weight difference within 0.002%.

Stock Honda Type R engines are built with a tolerance of 0.2%. We've set our bar 100 times higher.

Precise weight management of moving parts in an engine helps to decrease minute vibrations, allowing the engine to rev smoothly. The effect may not be visible on a power curve, but it definitely reflects on driving feel.

Another critical factor of building an engine is clearance management.

Modern engines are made up of different materials such as aluminum and steel in order to balance durability and weight

saving . sleeves made of steel is cast molded into an aluminum cylinder block and combined with pistons made from aluminum. Crankshaft, camshaft and intake/exhaust valves are made of steel, assembled to cylinder blocks and cylinder heads made of aluminum.

Since the coefficient of thermal expansion are different between aluminum and steel, clearance deviates according to temperature fluctuation.

At SPOON SPORTS, we take pride in assembling all our engines in a cleanroom, temperature controlled to maintain an environment for optimum clearance management during assembly.

Precision components are assembled in a constant environment by our skilled engine builders. We look forward to delivering the true performance of the Honda engine to our customers!