SUZUKI ADVANCED COOLING SYSTEM

Suzuki pioneered the use of this unique cooling system in the original GSX-R750 and has used it successfully in several models. The SACS cooling system uses air and recirculating oil to maintain engine operating temperature. The heart of the system is a 2-sided oil pump that is fed from a common oil supply. One side of the pump supplies the lubrication system with oil while the other side recirculates a large volume of oil through the cylinder head. Oil in the cylinder head passes over the top of the combustion chambers, (the hottest part of the engine), and draws away heat before returning to the sump at the bottom of the engine. Oil in the sump is simultaneously pumped through a large volume oil cooler to help maintain optimum oil temperature. Another feature of the system is oil jet piston cooling which sprays a continuous stream of oil under the crown of each piston to reduce engine heat. Overall the Suzuki SACS system is simple and effective. It requires no special servicing and allows engine designers to use lightweight engine components while maintaining high durability.