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Valves Rods
RB30 - RACE SERIES VALVES - learn more about our valves

Manley valves have set the standard for excellence in quality, material and design in the performance world for four decades. Manufactured from proven Race Master materials, Manley valves feature chrome stems, hard tips, fully machined surfaces and swirl polished radii.

Note: Manley Performance strongly recommends that customers check their valve guide size in order to achieve the proper valve stem to guide clearance. Guides may need to be honed when replacing stock factory valves.

 
Part # Type Head Diameter Stem Diameter O/A Length Tip Length Underhead Angle/Radius Margin Seat Width Top of Head
  Nissan RB 30E/T SOHC 12 Valve
11185-6 Exh. 35.1mm 8.0mm/.3136" 124.59mm 4.45mm 25° x 7/16" .065" .100" 18° Dish
11187-6 Exh. 36.1mm 8.0mm/.3136" 124.59mm 4.45mm 25° x 7/16" .065" .100" 18° Dish
11182-6 Int. 42.1mm 7.0mm/.2750" 125.68mm 4.45mm 10° x 3/8" .050" .080" 5° Dish
11184-6 Int. 43.1mm 7.0mm/.2750" 125.68mm 4.45mm 10° x 3/8" .050" .080" 5° Dish
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