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Cat Cams Turbo 269/249 Camshafts for Mazda MX-5 1.6 for turbo conversion. These Camshafts are for use in 1598cc B6 engines with long intake camshaft with sleeve for distributor drive and short exhaust camshaft. Will not work with standard hydraulic followers. Upgraded shim under bucket cam followers must be used.

FOR COMPETITION APPLICATIONS ONLY. Following details must be verified:
  • 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 the valve and piston 1.0mm (pref. 1.5mm). check 5-15° before TDC on the exhaust and after TDC on the intake
  • Only for pro street use with adjustable engine management

Camshaft Data Intake Exhaust
Lash ramp 0.25mm 0.25mm
Duration @ 0.1mm 269° 249°
Duration @ 1.0mm 236° 216°
Valve lift 11.50mm 10.25mm
Lobe angle 110 115
Timing @ 1.0mm 8° / 48°  43° / -7°
Valve lift @ TDC 2.20mm 0.60mm

 

Parts Required
Cam Wheels Y Y
Followers Y Y
Valve Lash Y Y
Valve Spring Y Y

 

Brand

Cat Cams

Engine

1.6

Cam Followers

Upgraded Shim Under Bucket

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