Sport Camshaft Set Renault F4R.730

The Cat Cams 5502421 is a sport camshaft set engineered for the Renault F4R.730 Clio II engine, specifically models with VVT that produce 172-180hp. This performance camshaft set features hydraulic lash adjusters for smooth operation. Key specifications include an intake duration of 277° at 0.1mm lift (240° at 1.0mm) and an exhaust duration of 268° at 0.1mm lift (231° at 1.0mm). The valve lift measures 11.25mm on the intake side and 10.25mm on the exhaust side, with corresponding cam lifts of 5.70mm intake and 5.20mm exhaust. The lobe separation angle for the intake is 124° (disengaged) or 108° (engaged with VVT), while the exhaust is 108°. It is crucial to ensure adequate piston-to-valve clearance when the VVT system is engaged. For applications utilizing the original ECU and intake manifold, Cat Cams recommends camshaft 5502438, which features reduced valve overlap when timed with the original tool. The VVT system on the intake camshaft allows for variable cam timing, affecting the lift at Top Dead Center. The intake valves have a timing angle of 124° (disengaged) and 108° (engaged), with the second intake valve at 128° (disengaged) and 112° (engaged). The exhaust valves operate at 112° and 108° respectively, without VVT.