Cat Cams BMW M54 Vanos 268/258 (1304501)

Cat Cams to suit BMW M54 double vanos. Requires new double valve springs.

Steel billet camshafts

-The VANOS (VVT) system on the intake camshaft changes the PD from 120° to 80°. The data are shown for full intake retard (disengaged VVT).

-The VANOS (VVT) system on the exhaust camshaft changes the PD from 105° to 80°. The data are shown for full exhaust advance (disengaged VVT).

-Check distance between valves and piston to be 1mm at least with VVT engaged. Wrong installation will cause severe engine damage!

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 intake
-lock or limit range of VANOS system