CAMSHAFT, ROAD 89, LARGE JOURNAL, RECONDITIONED

  • SKU: TT14041

Suitable for late Spitfire MkIV-1500

Road 89 - Ideal road cam which is slightly higher than the old Spitfire Mk III profile, and is suitable for all types of carbs with a flowed cylinder head to give a free revving engine.

Meaning of Journal Diameter

  • Small for engines with replaceable bearing fitted to cylinder block, originally fitted to twin carb engines, 1147-1286cc pre 1969.
  • Large for all other models, where cam runs in cylinder block. Bearings can always be removed for this range to be used on early models.

Details:

  • Profile: Road 89
  • Cam Size: Large Bearing
  • Inlet Timing: 22-70
  • Exhaust Timing: 62-26
  • Camshaft Duration: 272°
  • Lift: 0.276”
  • Install Figure: 112°
  • Inlet Valve Clearance: 0.012”
  • Exhaust Valve Clearance: 0.014”
  • Power Band: 2600-6000

Note: Use TT1307 double valve springs, without any lower collars or spacers. Installed height - 33-34mm

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Instruction GERMAN

Instruction ENGLISH