Engine, Transmission, wheels/Tyres and Heating/Cooling

PUSH RODS

Many gains in power and reliability in an engine can be achieved by careful building. When the rocker gear is installed, the rocker motion should result in the rocker being at 90° to the pedestal at half lift. To achieve this, the pedestal is either raised with shims, or the under-face machined off. This exercise will invariably result in the push rod ball pins being out of adjustment, requiring different length push rods. We therefore offer the push rods listed below to correct this situation. The push rods are measures in length overall. We appreciate that the correct way to measure would be from the centre of the ball end to the centre of the cup but as this is impractical an overall dimension gives an adequate indication of what will work in an individual application.

NOTE: For reference a TR250-6 Carb standard length is 211mm and TR5-6PI standard length is 206mm