CNC Precision Engineering  

Race Engine Tuning  - GM / Jawa 

Services

Full engine service will include:

  • Valves/seats re-faced
  • Springs installed to correct length
  • Cylinder and conrod honed
  • Flywheels seperated and re-aligned
  • All bearings inspected & replaced if necessary
  • Crank run out assessed
  • Crank balance assessed if excess main shaft/bearing wear or vibration occurs 
  • Compression ratio adjusted to rider requirements
  • All major components are accurately measured & recorded
  • Vital components are ultrasonically cleaned before installation
  • Cam degreeing / Valve lift assessed for final timing
  • Casings steam cleaned


Cylinder Head reconditioning will included:

  •  Old Valve guides & seats removed via pressing &  machining
  •  New Valve guides & seats machined & inserted
  •  New valve guides & seats concentrically machined in the head to lower tolerance limit
  •  Valve spring height & load assessed
  •  Assembly


Crankshaft rebuild

  •  Flywheels separated in separating fixture with 20 ton hydraulic press
  •  All components cleaned and inspected
  •  Conrod honed
  •  All parts measured & sized crank pin inserted to accommodate big end tolerance
  •  Crankshaft assembled on our hydraulic-pneumatic 55 Ton press together with the OKR alignment fixture
  •  Run-out assessed after each assembly


Engines can be tuned and upgraded to the riders requirements.

We can also provide cost effective solutions for customers with a limited budget.

If new components are required, customers will be informed prior to installation.

 

Other services available include:

  • Bespoke CNC Machining
  • Nikasil Replating
  • Repairs considered

2017 Prices

  •  Full engine service - £200
  •  Cylinder head reconditioning POA
  •  Reconditioned cylinders POA
  •  Crankshaft rebuild £40


  •  Engine delivery - from £30 / Uk Mainland
  •  All Machining & repairs - £20 p/h

 

  •  No VAT to pay
  •  Price + Cost of parts = Total

Machinery & Equipment

 

  •  Mach / Denford CNC centre lathe
  •  Mach / Triac CNC milling machine
  •  Harrison 140 / 600  Centre Lathe
  •  Easson 3 - axis DRO systems
  •  Delapena Speedhone
  •  B&D Valve refacing machine
  •  Ludwig Hunger Valve seat cutting machine
  •  20Ton Hydraulic press
  •  55Ton Hydraulic-Pneumatic press
  •  Custom made tooling, jigs & fixtures
  •  Digital Ultrasonic Cleaner