Transcription of CYAUTO Premium Engine Valves
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CYAUTO Engine VALVE. " CYAUTO " Engine Valve apply to different kinds of materials/special treatments according to OE specifications as follows: SPECIFICATIONS of MATERIALS / SPECIAL TREATMENT. MATERIAL SYMBLE. W Chromium-Manganium-Molybdenum-steel(JIS SCM4) Alloy Steels applied to Inlet Valves H Silicon-Chromium(Silichrome 1) (JIS SUH 11)apply to Inlet Valve only A Silicon-Manganium-Molybdenum-steel(JIS SUH3) apply to Inlet Valves (may apply to Exhaust Valves of light engines). B High Chromium-Magane Austenitic steel (JIS SUH36)(Anti-Magnetic Steel 21-4N). Apply to Exhaust Valves of heavy duty enginess. D DIN (Inlet),DIN (Exhaust). SPECIAL TREATMENT SYMBOL. S ss Valve seat : Stellite or (F). st Tip:Stellite T Wafer welded Valves Small wafer ( normally in our A-class material). is welded at the valve tip C Chromium plated Valves stems N Soft nitrided valve Soft nitrided finish,in other words "Tufftride", or so called " Black Finish" in general,The significance of these improvements resulting from soft nitrideing is of course an extneded valve life.
DAIHATSU Engine Code Vehicle Model Chassis Type CC Year IN EX O.E. Part NO. Remark PREMIUM ENGINE VALVE CYAUTO No. No. of Cyl. DELTA 1500 DV23 SV23 V30 31 32 IN 13711-44012
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