Engineering

Engineering services

  • Cylinder Rebores
  • Cylinder head reconditioning
  • Dynamic crankshaft balancing
  • Welding and fin repairs
  • Blasting & Polishing

With fully trained and experienced staff we are able to undertake many engineering jobs to not only BSA, Triumph and Norton models but to other makes and models too.

 

 

CRANKSHAFT
Sludge tap thoroughly cleaned.
Re-grinding accurately to  size and specified radii.
Dynamic balancing to smooth out the vibrations.

CONRODS
Checked and polished.
Standard Small ends re-bushed or special oversize made.

CYLINDER HEAD
Colsibro valve guide fitted and sized Valve seats cut.
Hardened valve seats fitted to run on Unleaded fuel.
Repairing Fins and thread repairs.
Blasting and cleaning to restore the Original finish.
Gas flowing and tuning.

CYLINDER BARREL
Bored to within 0.002” (thou) then honed to an exact size, within two tenths of a thou (0.0002”) tolerance,
Bore size is matched to piston dimensions for correct clearance.
Bores are straight and parallel.
Barrels are shot blasted and a high quality stove enamel paint before machining.

BUSHES, BEARINGS & OIL SEALS
High quality bushes are always used and can be made to size to accommodate worn shafts or casings. 
New quality bearings and oil seals are always fitted.                                                                                                   

WELDING REPAIRS
Specialist welding especially on alloy casings. 
Welding and re-machining holes.