Description

The vision is for Kelford Cams to be known as one of the best in the camshaft industry, to be recognised worldwide for manufacturing high quality, high performance camshafts for the motorsport industry. We are a small company that, since 1968 has specialised in custom camshafts to suit the individual requirements of each racer. We have a vast knowledge of engine combinations for all types of motor sport and we know how to match camshafts to engine and vehicle requirements. All of our cams are manufactured in-house using ultra-modern design systems and ground using masterless CNC grinders with CBN cutting wheel technology for superior quality and consistency.

  • 252/252 Degrees advertised duration, 9.50mm/9.50mm lift
  • EZ Power stage 1 plug and play cams to suit near stock engines. Easy on the stock spring with boost up to 2 bar

Specifications

Engine Make: Engine Model: Part Number:
MAZDA 2.3 DISI 247-A
Valve Clearance: Intake: 0.30mm Set COLD at the CAM
  Exhaust: 0.35mm Set COLD at the CAM
 
Cam Lift:   Intake: 9.80mm Exhaust: 9.85mm
Rocker Ratio:   Intake: 1 Exhaust: 1
Nett Valve Lift:   Intake: 9.50mm Exhaust: 9.50mm
Advertised Duration @ 0.10mm Intake: 252 Exhaust: 252
Duration @ 1.00mm VALVE LIFT Intake: 212 Exhaust: 212
Timing @ 1.00mm VALVE LIFT IVO: 18 ATDC EVO: 36 BBDC
    IVC: 50 ABDC EVC: 4 BTDC
Suggested Centre Lines:   Intake: 124 Exhaust: 110
VALVE Lift @ TDC Intake: 0.06mm Exhaust: 0.62



Compatibility

  • 2005-2012 Mazdaspeed6/ Mazda6 MPS/Atenza MPS, Mazda CX-7, Mazdaspeed3/ Mazda3 MPS/Axela MPS, Mazda MPV (JDM only)

The vision is for Kelford Cams to be known as one of the best in the camshaft industry, to be recognised worldwide for manufacturing high quality, high performance camshafts for the motorsport industry. We are a small company that, since 1968 has specialised in custom camshafts to suit the individual requirements of each racer. We have a vast knowledge of engine combinations for all types of motor sport and we know how to match camshafts to engine and vehicle requirements. All of our cams are manufactured in-house using ultra-modern design systems and ground using masterless CNC grinders with CBN cutting wheel technology for superior quality and consistency.

  • 252/252 Degrees advertised duration, 9.50mm/9.50mm lift
  • EZ Power stage 1 plug and play cams to suit near stock engines. Easy on the stock spring with boost up to 2 bar
Engine Make: Engine Model: Part Number:
MAZDA 2.3 DISI 247-A
Valve Clearance: Intake: 0.30mm Set COLD at the CAM
  Exhaust: 0.35mm Set COLD at the CAM
 
Cam Lift:   Intake: 9.80mm Exhaust: 9.85mm
Rocker Ratio:   Intake: 1 Exhaust: 1
Nett Valve Lift:   Intake: 9.50mm Exhaust: 9.50mm
Advertised Duration @ 0.10mm Intake: 252 Exhaust: 252
Duration @ 1.00mm VALVE LIFT Intake: 212 Exhaust: 212
Timing @ 1.00mm VALVE LIFT IVO: 18 ATDC EVO: 36 BBDC
    IVC: 50 ABDC EVC: 4 BTDC
Suggested Centre Lines:   Intake: 124 Exhaust: 110
VALVE Lift @ TDC Intake: 0.06mm Exhaust: 0.62



  • 2005-2012 Mazdaspeed6/ Mazda6 MPS/Atenza MPS, Mazda CX-7, Mazdaspeed3/ Mazda3 MPS/Axela MPS, Mazda MPV (JDM only)

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