HKS Belt Upgrade Timing for RB20/RB25/RB26

Notes:

• This timing belts best suited for use with HKS Slide Cam-Pulley. Optimized belt strength for each engine application makes the Fine Tune Timing Belt ideal for use with HKS Slide Cam-Pulleys for high power/high RPM engine.

  • Belt strength has been optimized for each engine application and designed to allow stable belt tension even when heat expansion occurs in the engine
  • Previous timing belt manufacturing techniques have involved with applying pressure from the
  • outside to the teeth. This applies tension to teeth making them weaker. By forming a mould with the correct shape of teeth to begin with, will allow the teeth shape to be formed without compromising belt strength and can decrease the belt skipping at high
  • torque engine.
  • Teeth rubber is made from H-NBR grade rubber for additional strength.
  • Balancer belt for 4G63 is also available. By combining both timing belt and balancer belt, the load and stress can be reduced for both engine and cha
  • ssis

  

  Necessity of Changing the Balancer Belt

• The balancer is designed to reduce engine vibration by creating a vibration in the opposite direction to the engine. When used at high RPM such as on circuits, the vibration will naturally increase which causes more load on the balan

• cer. Moreover, the balancer rotates at double speed of the crankshaft which will cause the belt to stretch at a faster rate compare to the other belts. This stretch will eventually put the balancer out of synchronization with the crankshaft, causing more
• vibration and then eventually the belt may break up. For this reason, HKS recommends that when the timing belt is changed, the balancer belt should also be changed with a strengthened item to allow the balancer for effective, accurate and reducing stress
• on the engine and chassis.