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274 Camshafts for the Bp4W

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£610.00

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Cat Cams Camshafts for the MX5 is designed to offer a broad powerband while at the same time allowing the engine to breathe heavier with the additional lift and changes to cam timing, we have done our best to highlight the theoretical benefits of this camshaft via the table below

These cams will fit into the standard BP4W MX5 1.8 Head without any modification of the castings or the need for adjustable cam pulleys, they are as far as you can go without the need to adjust overlap in order to correct piston to valve clearance.

When installing performance camshafts the engine should always be checked for clearance and the valvetrain checked for the correct tolerances, this may involve changing shims on solid lifter setups in order to achieve minimal valve lash.

The specification for these camshafts are below – Model Number – 3701403

Cat Cams BP4W Hot Street MX5

REMARKS :
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 camshafs must turn smooth in the cylinderhead, 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
MUST BE USED WITH A STANDALONE ECU. Click Here for ECUs.
Brand

Cat Cams

Engine

1.8

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Make Model Year
Mazda MX-5 1998 - 2000