Cylinder Heads

Our aim is to always provide a solution to your cylinder head problem.

We can carry out:

  • Pressure testing of all cast and alloy heads

  • Skimming of all cast and alloy heads

  • Boring and fitting valve seat inserts - unleaded fuel conversions

  • Refacing valve seats and valves

  • Setting up valve clearances - shimming

  • Machining and fitting oversize or modified valve guides and valves

  • Hot degreasing, de-carbonising and blasting services

  • Supply, fitting and expanding of injector sleeves

  • Recess and flame ring cutting

  • Broken stud extraction and thread inserting

  • Weld repair of alloy heads

  • Porting and polishing

Here is an example of a full overhaul of a Detroit 4-71 cylinder head.  Detroit cylinder head following full overhaul by Precision

Detroit cylinder head, before it was overhauled by Precision

We also offer an extensive range of new and reconditioned cylinder heads and can supply all necessary gaskets, head sets, bolts and other components.  See our Parts Counter section.

Please call to discuss your requirements.  

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Opening Hours:

Monday - Thursday: 0730-1700

Friday: 0730-1500

Precision Engine Services, 23 Henderson Drive, Inverness IV1 1TR

Tel: 01463 235537 Email:

Precision Engine Services Limited Registered in Scotland No: SC399507
Registered Office: 23 Henderson Drive, Inverness IV1 1TR.

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