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 |  SKU: 247-A

Kelford Performance Camshafts

Mazda 3 MPS BK BL/6 MPS GG/CX-7 (MZR 2.3L)
$1,117.60
Camshaft Profile
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Description
 

Kelford has designed a range of mild performance camshafts to suit the Mazda MZR engines. The newly released 247 range suits the popular, award-winning 2.3L L3-VDT DISI turbo engine. For more radical builds, please contact us to discuss your requirements.

 

Camshaft Profiles - Click "Specifications" Tab for profile data:

247-A:

  • 252/252 Degrees advertised duration, 9.50mm/9.50mm lift.
  • E-Z power, drop in cams. Can be used with stock springs. Suits mild turbo upgrade.

247-B:

  • 260/268 Degrees advertised duration, 10.25mm/10.50mm lift.
  • Ultimate stage 2 cams to suit engine builds in the 350-500HP range.

247-C:

  • 266/276 Degrees advertised duration, 10.55mm/10.55mm lift.
  • Stage 3 turbo cams, 500-750HP range, great with E85.

247-C2:

  • 272/278 Degrees advertised duration, 11.00mm/11.00mm lift.
  • Turbo Race Cams, to suit high power builds, 650-900HP. Great with E85

247-D:

  • 282/292 Degrees advertised duration, 11.25mm/11.25mm lift.
  • Stage 4 Drag Cams, best suited for professionally built engines. 750-1000HP.
 

Technical Specifications

247-A

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

 

 

 247-B

Engine Make: Engine Model: Part Number:
MAZDA 2.3 DISI 247-B
Valve Clearance: Intake: 0.30mm Set COLD at the CAM
  Exhaust: 0.35mm Set COLD at the CAM
 
Cam Lift:   Intake: 10.55mm Exhaust: 10.85mm
Rocker Ratio:   Intake: 1 Exhaust: 1
Nett Valve Lift:   Intake: 10.25mm Exhaust: 10.50mm
Advertised Duration @ 0.10mm Intake: 260 Exhaust: 268
Duration @ 1.00mm VALVE LIFT Intake: 220 Exhaust: 228
Timing @ 1.00mm VALVE LIFT IVO: 18 ATDC EVO: 48 BBDC
    IVC: 58 ABDC EVC: 0 TDC
Suggested Centre Lines:   Intake: 128 Exhaust: 114
VALVE Lift @ TDC Intake: 0.08mm Exhaust: 0.99

 

 

 247-C

Engine Make: Engine Model: Part Number:
MAZDA 2.3 DISI 247-C
Valve Clearance: Intake: 0.30mm Set COLD at the CAM
  Exhaust: 0.35mm Set COLD at the CAM
 
Cam Lift:   Intake: 10.85mm Exhaust: 10.90mm
Rocker Ratio:   Intake: 1 Exhaust: 1
Nett Valve Lift:   Intake: 10.55mm Exhaust: 10.55mm
Advertised Duration @ 0.10mm Intake: 266 Exhaust: 276
Duration @ 1.00mm VALVE LIFT Intake: 228 Exhaust: 236
Timing @ 1.00mm VALVE LIFT IVO: 16 ATDC EVO: 52 BBDC
    IVC: 64 ABDC EVC: 4 ATDC
Suggested Centre Lines:   Intake: 130 Exhaust: 114
VALVE Lift @ TDC Intake: 0.16mm Exhaust: 1.37

 

 

247-C2

 

247-D

Engine Make: Engine Model: Part Number:
MAZDA 2.3 DISI 247-D
Valve Clearance: Intake: 0.30mm Set COLD at the CAM
  Exhaust: 0.35mm Set COLD at the CAM
 
Cam Lift:   Intake: 11.55mm Exhaust: 11.60mm
Rocker Ratio:   Intake: 1 Exhaust: 1
Nett Valve Lift:   Intake: 11.25mm Exhaust: 11.25mm
Advertised Duration @ 0.10mm Intake: 282 Exhaust: 292
Duration @ 1.00mm VALVE LIFT Intake: 242 Exhaust: 248
Timing @ 1.00mm VALVE LIFT IVO: 9 BTDC EVO: 62 BBDC
    IVC: 53 ABDC EVC: 6 ATDC
Suggested Centre Lines:   Intake: 112 Exhaust: 118
VALVE Lift @ TDC Intake: 1.96mm Exhaust: 1.56

 

Fitment Table