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Profil Noken As/Camshaft Yamaha YZ 450F

Written By Novanda S.T. on Wednesday, October 7, 2015 | 10:09 PM

Profil Noken As/Camshaft Yamaha YZ 450F - Ingin tahu seperti apa profil noken as motor SE (Special Engine) yang terkenal dengan performa nya? Silahkan disimak keterangan di bawah ini.
noken as YZ 450F
Stock 06-09 YFZ450
  • Intake Lift : 8.64 mm
  • Exhaust Lift : 8.45 mm
  • Intake Lobe Center : 107º
  • Exhaust Lobe Center : 123º
  • Intake Duration (@1 mm lift): 256º
  • Exhaust Duration (@1 mm lift): 258º
  • Intake Open/Close: 21 btc/55 abc
  • Exhaust Open/Close: 72 bbc/6 atc
  • Lobe Separation Angle : 115º
  • Overlap: 27º
Comments: Exhaust cam is advanced from the factory. Better all-around performance is achieved by retarding the exhaust camshaft one tooth.

Stock 06-09 YFZ450 with "Cam Mod"
  • Intake Lift : 8.64 mm
  • Exhaust Lift : 8.45 mm
  • Intake Lobe Center : 107º
  • Exhaust Lobe Center : 100.5 º
  • Intake Duration (@1 mm lift): 256º
  • Exhaust Duration (@1 mm lift): 258º
  • Intake Open/Close: 21 btc/55 abc
  • Exhaust Open/Close: 49.5 bbc/28.5 atc
  • Lobe Separation Angle: 103.75º
  • Overlap: 49.5º
Comments: Increased performance across the board compared to stock. Excellent benchmark for comparing aftermarket cams.

Stock 08-09 YZ450f
  • Intake Lift : 8.64 mm
  • Exhaust Lift : 8.45 mm
  • Intake Lobe Center : 97º
  • Exhaust Lobe Center : 103º
  • Intake Duration (@1 mm lift): 256º
  • Exhaust Duration (@1 mm lift): 258º
  • Intake Open/Close: 31 btc/45 abc
  • Exhaust Open/Close: 52 bbc/26 atc
  • Lobe Separation Angle: 100º
  • Overlap: 57º
Comments: Possible budget early IVC/high overlap setup. YFZ450 exhaust cam in "cam mod" position will increase overlap to 59.5.

Hot Cams Stage 1 (4023 in/4044 ex)
  • Intake Lift(inches/mm): 8.86
  • Exhaust Lift(inches/mm): 8.67
  • Intake Lobe Center (degrees): 110
  • Exhaust Lobe Center (degrees): 103
  • Intake Duration (degrees at .040"): 269
  • Exhaust Duration (degrees at .040"): 265
  • Intake Open / Close: 24.5 btc/64.5 abc
  • Exhaust Open / Close: 55.5 bbc/29.5 atc
  • Lobe Separation Angle: 106.5
  • Overlap: 54
Comments: Top-end gain compared to stock "cam mod". Stock springs and retainers OK.

Hot Cams Stage 3 (4097 in/4098 ex)
  • Intake Lift(inches/mm): 8.89
  • Exhaust Lift(inches/mm): 8.74
  • Intake Lobe Center (degrees): 108
  • Exhaust Lobe Center (degrees): 97.25
  • Intake Duration (degrees at .040"): 260
  • Exhaust Duration (degrees at .040"): 253.5
  • Intake Open / Close: 22 btc/58 abc
  • Exhaust Open / Close: 44 bbc/29.5 atc
  • Lobe Separation Angle: 102.625
  • Overlap: 51.5
Comments: Trades some Stage 1 top-end for mid-range. Stock springs and retainers OK.

Web 297/192 "Torque" Profile (exhaust retarded 1 tooth)
  • Intake Lift(inches/mm): .360/9.14
  • Exhaust Lift(inches/mm): .338/8.59
  • Intake Lobe Center (degrees): 107
  • Exhaust Lobe Center (degrees): 100.5
  • Intake Duration (degrees at .050"): 244
  • Exhaust Duration (degrees at .050"): 247
  • Intake Open / Close: 15 btc/49 abc
  • Exhaust Open / Close: 44 bbc/23 atc
  • Lobe Separation Angle: 103.75
  • Overlap: 38
Comments: Web cam card duration and event info is at .050" lift, so duration-related numbers will appear low compared to other cams rated at .040" lift.

Web 943 (most aggressive in catalog with stock valve springs)
  • Intake Lift(inches/mm): .355/9.02
  • Exhaust Lift(inches/mm): .355/9.02
  • Intake Lobe Center (degrees): 107
  • Exhaust Lobe Center (degrees): 100.5
  • Intake Duration (degrees at .050"): 258
  • Exhaust Duration (degrees at .050"): 258
  • Intake Open / Close: 22 btc/56 abc
  • Exhaust Open / Close: 49.5 bbc/28.5 atc
  • Lobe Separation Angle: 103.75
  • Overlap: 50.5
Comments: Web cam card duration and event info is at .050" lift, so duration-related numbers will appear low compared to other cams rated at .040" lift.

Web 963/216
  • Intake Lift(inches/mm): .356/9.04
  • Exhaust Lift(inches/mm): .363/9.22
  • Intake Lobe Center (degrees): 107
  • Exhaust Lobe Center (degrees): 100.5
  • Intake Duration (degrees at .050"): 262
  • Exhaust Duration (degrees at .050"): 263
  • Intake Open / Close: 24 btc/58 abc
  • Exhaust Open / Close: 52 bbc/31 atc
  • Lobe Separation Angle: 103.75
  • Overlap: 55
Comments: Requires performance valve spring kit. Web cam card duration and event info is at .050" lift, so duration-related numbers will appear low compared to other cams rated at .040" lift.

MMAD Lightspeed
  • Intake Lift(inches/mm): .384/9.75
  • Exhaust Lift(inches/mm): .384/9.75
  • Intake Lobe Center (degrees): 108
  • Exhaust Lobe Center (degrees): 105 (small core exhaust)-110 (big core/meg/OOF)
  • Intake Duration (degrees at .040"): 266
  • Exhaust Duration (degrees at .040"): 266
  • Intake Open / Close: 25 btc/61 abc
  • Exhaust Open / Close: 63 bbc/23 atc (at 110 lobe center)
  • Lobe Separation Angle: 109
  • Overlap: 48
Comments: Drag race cam, HD springs required.

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