Supertech Full Valve Set w/ Inconel Exhaust Standard Size for Nissan SR20DET
Production of Supertech
valves begins with a one piece forging, where the head of the valve is forged
under a slow two step process to keep a good material grain flow. The forging
is then CNC machined in several steps to ensure the precision of the final
dimensions. Supertech then do another heat treatment for stress relieving
followed by a nitride hardening treatment. Lastly, final grinding followed by
their patented Superfinishing of the surface to ensure that each valve is free
of any imperfections and the dimensions are precise. Supertech applies more
than 30 years of experience in the development of each and every racing valve
sold. Experience combined with state of the art equipment such as ultrasonic
test, x-rays, laser measurement equipment, and applications like computerized
finite element analysis.
Intake valves are made
exclusively from an enhanced version of EV8 (21-4N) steel. This is the highest
grade of steel available and provides the strength to withstand just about any
application. Exhaust valves are made from EV16 (21-8N) or EV8-Nb/w for greater
strength at higher temperatures. Some applications call to harden certain areas
such as the tips and or the seats. For these applications Supertech often times
weld other hard metal alloys to the valve for increased durability.
The nickel base alloy material is used for exhaust valves in engines that reach
very high temperatures and its use is growing with the application of turbos
and superchargers. Supertech now offers Inconel valves, hollow and filled with
sodium. This will ensure cooling of the valve by removing heat from the head of
the valve to the stem. This provides better temperature distribution and lowers
head temperature.
Supertech SR20DE SR20DET - Black Nitrided Intake Valve STD Set
Brand: Supertech Performance
Manufacturer Part Number: NIVN-1005-8
Head Diameter: 34.15mm (+1mm)
Stem Diameter: 5.97mm
Length: 101.40mm
Material: Black Nitrided
Valve Type: Intake
Engine: Nissan SR20DE / SR20DET
Supertech SR20DET - Inconel Exhaust Valve STD Set
Brand: Supertech
Manufacturer Part Number: NEVI-1005-7-8
Head Diameter: 30.15mm
Stem Diameter: 6.94mm
Length: 102.4mm
Material:Inconel
Valve Type:Exhaust
Engine: Nissan SR20DET
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Just Racing is an Engine Machine Shop and Retail Performance Parts Store based out of Las Vegas, NV. We are a full-service shop capable of building custom engines to fit the customer’s needs while providing quality parts at a great price! Your one stop shop for quality performance parts!
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