ARP is a manufacturer of fasteners/bolts found in engines and drivelines, ranging from OEM replacement parts to specialty hardware for racing applications. ARP is the world leader in fastener technology.
Valve springs data Installed seat pressure - 38kg Load - 100kg@12.5mm Max. lift - up to 13mm Made from chrome-silicon steel SAE9254-V Outer spring outer diameter: 30.50mm Outer spring inner diameter: 23.20mm Inner spring outer diameter: 21.20mm Inner spring inner diameter: 16.20mm 10 pcs. outer springs 10 pcs. inner springs Fits 5 cylinder 10V Audi / VW 2.5TDi engines. With this set the risk of valve flutter and a possible engine failure is minimized. Recommended for engines with series and racing camshafts and over 7500 RPM.
ARP is a manufacturer of fasteners/bolts found in engines and drivelines, ranging from OEM replacement parts to specialty hardware for racing applications. ARP is the world leader in fastener technology.
8740 Chrome Moly: Until the development of today’s modern alloys, chrome moly was popularly considered a high strength material. Now viewed as only moderate strength, 8740 chrome moly is seen as a good tough steel, with adequate fatigue properties for most racing applications, but only if the threads are rolled after heat-treatment, as is the standard ARP production practice. Typically, chrome moly is classified as a quench and temper steel, that can be heat-treated to deliver tensile strengths between 180,000 and 210,000 psi
