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Christmas 2020 Opening Times

As we approach the end of this most trying of years we would like to thank all our customers and suppliers for their help and support and wish you all a Happy Christmas and a healthy happy and safe 2021.  We will be shipping orders upto and over the holiday period but closed on the 24th re-open 29th and 30th then closed until Jan 4th. Best wishes from all at RGM

INLET PUSHROD, HOLLOW STEEL, TWINS 7.9", MODEL 7/88"

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INLET PUSHROD, HOLLOW STEEL, TWINS 7.9", MODEL 7/88"

Part No
067031S
RGM Genuine

INLET PUSHROD, HOLLOW STEEL, TWINS 7.9", MODEL 7/88"

HI TENSILE HOLLOW STEEL TUBE, HARDENED STEEL ENDS.  MODELS 7 & 88.  INLET.

ORIGINALLY THE PUSHRODS USED ON THE TWINS WOULD BE SOLID ALLOY WITH STEEL ENDS, THESE THEN EVOLVED INTO A SPECIAL RENOLDS ALLOY HOLLOW TUBE.  (FIRST ARE PARALLEL, SECOND BARREL SHAPED), UNFORTUNATELY BY 1975 THE RENOLD COLD DRAWN TUBE BECAME UNAVAILABLE AND THE CAST PRODUCTION PUSHRODS ALONG WITH THE ALLOY ONES AVAILABLE TODAY WOULD RETAIN THE 'BARREL' SHAPE BUT ARE ACTUALLY SOLID.  THE STEEL PUSHRODS WHILST BEING HOLLOW ARE STILL HEAVIER THAN THE SOLID ALLOY PUSHRODS. THEIR ADVANTAGE IS DERIVED FROM THE FACT THAT THEY ARE SUBSTANTIALLY STRONGER AND WILL ALLOW THE VALVE TO FOLLOW THE THEORETICAL TIMING DICTATED BY THE CAMSHAFT.  AN ADVANTAGE UNLIKELY TO BE NOTICEABLE WHEN USING LOW/STANDARD LIFT CAMS AT LOW OR MEDIUM RPM'S.  ULTIMATELY CORRECT GEOMETRY CAN ONLY BE ACHIEVED BY DOING A PRELIMINARY ASSEMBLY AND OBSERVING THE SWEEP OF THE ROCKER ADJUSTER ACROSS THE VALVE TIP AS THE VALVE IS OPENED.  THERE ARE MANY VARIABLES THAT WILL AFFECT THIS AND IDEALLY AN OLD PUSHROD SHOULD BE USED AND EXAMINED IN OPERATION USED TO ESTABLISH THE CORRECT LENGTH OF THE PUSHROD TO OBTAIN AN ADJUSTER SWEEP THAT STARTS AND FINISHES AT APPROXIMATELY EQUAL DISTANCE FROM THE CENTRE LINE OF THE VALVE.

NOMINAL LENGTH: 7.9" (200MM)
OUTSIDE DIAMETER: 3/8"
WEIGHT: 71.7G


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