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Engine and Cylinder head sales: 1300 360 110


Cylinder Head Servicing

Trusted cylinder head servicing throughout Australia

Cylinder head reconditioning and inspection

At HM GEM Engines, we offer professional cylinder head reconditioning services for a very competitive price to all customers in Dandenong and the rest of Australia. Using state-of-the-art, computerised equipment, we can carry out a full survey report on every cylinder that comes to us, ensuring they meet the OEM specifications. 

Our team will then perform non-destructive magnetic particle crack-testing on the components, as well as checking valve guide clearances, valve masking heights, and valve margins. All parts, including inlet and exhaust valves, retainers, springs, and washers are also checked for serviceability.

Our cylinder head reconditioning service includes:

  • Valve guide fitting and reaming
  • Valve seat insert replacement
  • Valve seat machining 
  • Valve re-facing 
  • Cylinder head milling 
  • Fire ring recess re-machining
Caterpillar 3412 cylinder head having the valve masking height measured for serviceable tolerance
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The serdi S5.0 valve guide and seat machine

The reconditioning process explained

From small, single cylinder alloy heads to the largest cast-iron diesel heads, we can accommodate all sizes of cylinder heads at HM GEM Engines.

Our team will carefully inspect each cylinder head for cracks and flaws by carrying out magnetic particle crack-testing and pressure testing. Vacuum impregnation is also performed on all alloy cylinder heads for better resistance to heat stress and to seal the internal water jacket porosity.

New LPG compatible valve guides, bronze guide liners, and valve seats are also fitted and cut to the original manufacturer’s specifications. The cylinder head fire deck surface is milled to ensure the minimum amount of stock is removed from the casting.

Finally, the cylinder head is assembled using new premium-quality inlet and exhaust valves and new valve stem seals.

The rottler SG8 valve guide & seat machine

Specialised products

At HM GEM Engines, we have the largest variety of specialised tooling for injector sleeve and pre-combustion chamber replacement in Australia, including:

  • Caterpillar
  • Detroit GM
  • Fiat
  • Hino
  • International
  • Komatsu
  • Leyland
  • Mack
  • Mercedes
  • Mitsubishi
  • Perrins 
  • Volvo

With a fast turnaround on all work and highly qualified staff using the best equipment available, we guarantee professional results when you visit HM GEM Engines.

Valve seat cutting scania DSC11
AMC 2500VF milling a caterpillar 3412

Contact Us

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Call us today for more information about our cylinder head servicing!

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