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1.6L 16v - TU5J4 TU5JP4
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1.6L 16v - TU5J4 TU5JP4
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Set of 8 SUPERTECH / FERREA / CATCAMS exhaust valves for the TU5J4 and TU5JP4 engines:
The reinforced exhaust valve kits SUPERTECH, FERREA and CATCAMS for the TU5J4 and TU5JP4 engines consist of 8 valves.
Technical specification 
SUPERTECH valves start life as a forged blank which is then CNC machined for optimal precision. They are heat treated, the process varying with the intended application, then reground in a super-finishing operation. Each valve is checked by ultrasound, X-ray and laser measurement.
For over three decades SUPERTECH has worked to find the most suitable material for each valve and each application in order to increase reliability. Hence the different valve materials: stainless steel, Inconel, titanium and sodium, the latter sitting inside the stem to improve heat dissipation.
Technical specification 
FERREA Racing Components valves are made in much the same way as SUPERTECH: slow two-stage forging, heat treatment with 48 hours of stress relieving, and CNC machining. They are designed for better reliability in all conditions and for improved flow, thanks to a thinner stem below the head (Superflow Valve). FERREA offers several ranges and materials to match the demands of each engine and each application, whether naturally aspirated, turbo or nitrous.
Technical specification 
CATCAMS has been recognised worldwide for years for its camshafts and related parts such as valve springs, cam followers and vernier cam pulleys, thanks to its know-how and its detailed study of engines and applications. Each cam profile and each spring rate is developed to suit the specific engine and the intended use, whether road, sport, rally, run or circuit.
