Precision Automotive Machining Services

CNC Valve Seat Cutting | Decking | Boring | Line Hone | Hot Hone | Balancing | Porting

The Machine-shop at Hasselgren Engineering in Berkeley, California is available for performance engine machining services.

newen cutter toyota headFor high quality valve jobs using  Newen’s new Fixed-Turning machine or precision decking on the Berco with XYZ 0.0001″ positioning, Hasselgren has always offered these services as a job shop in addition to prepping Hasselgren’s own engines.

Sunnen Cylinder Hot HoneHasselgren’s CNC Sunnen Hot Hone is used in conjunction with custom heated torque plates and oil heated to engine operating temperature for the truest bores when the engine is fully loaded.

Hasselgren also owns CNC Mazak and Mori-Seki VMC’s and an Okuma lathe for prototype or production parts.

Valve Seat Cutting – Newen Fixed-Turning Machine

Improving Engine Performance and Fuel Economy

Hasselgren offers high precision programmable valve seat cutting on hard or soft valve seat materials with Newen’s new generation Fixed-Turning technology.

For valve diameters from 13mm to 80mm+ (0.52-3.15″), Hasselgren can prepare a cylinder head with greater accuracy and for any valve seat material.

Duplicate existing seat profiles or generate custom profiles by specifying any combination of angles and radii from deep within the port to the deck surface.

Oil Swirl Pot for Hewland FTR Oil Tank

Eliminate oil pickup issues under cornering and braking loads

  • Expand oil tank capacity
  • Efficient Oil-Air Separation
  • Compact Design

Hasselgren Oil Swirl Pot Hewland FTRHasselgren has developed an oil swirl pot to eliminate oil delivery issues under high g loads, both lateral and longitudinal, by expanding oil tank capacity.

The scroll top design incorporates three ports for scavenged oil, catch tank and engine vent in case of positive crank case pressure.

The compact screw top allows for easy filling and level checking and the assembly fits under most formula car engine bay covers.  The mounting flange has been designed to fit on the Hewland FTR style oil tank/gear cases but can be customized for other applications.

Custom Exhaust Manifold Fabrication

Stainless tube header for prototypes and production

Exhaust Manifold Flange Design

Hasselgren has expanded its fabrication capabilities to include custom stainless or mild steel exhaust manifold assemblies.  Hasselgren can design and machine flanges and assemble for prototype or production quantities.  We can also advise on muffler requirements to fit chassis space and sound level constraints.

The gallery shows the recent design and prototype for the Mazda MZR engine Hasselgren is providing for new FormulaSPEED2.0 race car.

Machining and Fabrication