Supertech Bronze Manganese Valve Guides
For Nissan Silvia S13, S14, S15 SR20DET Engine
(6mm Intake Valve Stems & 7mm Exhaust Valve Stems)
Intake x 8 -- GDE-NSR6-I -- 10.03mm Outer Diameter -- 40mm Length
Exhaust x 8 -- GDE-NSR7-ET -- 11.03mm Outer Diameter -- 43mm Length
Supertech Valvetrain has proven in a variety of motorsports applications from mild 150 horsepower street engines to 1000+ Horsepower race cars. Don't be fooled by lesser quality valvetrain components, stick with Supertech and get the quality you deserve for your project that will fit right the first time and offer superior performance and longevity.
The Supertech Valve Guides are precision-machined from high quality Manganese Bronze material. These guides in combination with our low friction black nitride valves provides the best solution for performance and durability.
Interference fit in the cylinder head should be about 0.04mm (0.0015"). Inner bore needs to be honed after installation
Supertech Performance is best known for high performance valves, and valvetrain components. With over 30 years of experience Supertech performance has been providing the racing market with first class parts for every type of racing application.