Description3701411hot street – Dirt trackMazda BP-4W Solid cam followersI-4cyl 1.8L 16v DOHC (DTs/DTs)Camshaft Data:      Intake /  Exhaustlash ramp:             0.25mm 0.25mmduration @ 0.1mm: 286° / 286°duration @ 1.0mm  : 240° / 240°valve lift:   10.35mm  /  10.35mmcam lift:      10.35mm / 10.35mmlobe angle:             108° /  108°timing @ 1.0mm  : 12° / 48°  –  48° / 12°valve lift @ TDC : 2.50mm 2.50mmREMARKS : #valve locks and retainers are not interchangeable with parts of the earlier BP cylinder head with hydraulic cam followersREMARKS :#Camshafts for use with OEM mechanical cam followers. Please check the following dimensions before ordering:– short intake camshaft– long exhaust camshaft, grooves in cam bearings, slot for distributor drive– cam follower diameter: 30.0mm– shim diameter: 27.0mm (between cam and cam follower)#FOR COMPETITION APPLICATIONS ONLY. Following details must be verified:– the camshafts must turn smooth in the cylinder head, provide free travel by machining where needed– distance between valve seal and retainer at full lift must be 0.6mm at least– minimum valve spring travel of 1.0mm at full lift must be provided– distance between valve and piston 1.0mm (pref. 1.5mm). check 5-15° before TDC on exhaust, and after TDC on intakestand-alone ECU based on throttle position sensor advised