Cummins 6B Engines

Precision Engine Services received two Cummins 6B engines in for a full rebuild.  

These engines are both fitted to a marine vessel, and works on a fish farm on the West Coast of Scotland. 

The engines were fully stripped, inspected and overhauled.  

One of the engines was already at maximum bore size and required additional boring and repair liners fitted to bring it back to standard size.  Surface skimmed.

Cylinder heads were fully overhauled including new valves, springs, seals, etc.  The heads were both machined to accept valve guides as there are none fitted from standard.  

Fuel pumps overhauled and new nozzled fitted to the injectors.  New oil pump and bearings fitted.  All new gaskets, seals and head bolts supplied and fitted. 

Test run on site and painted as per customer's request to Cummins spec. 

  • First Cummins 6B Engine as it arrived at Precision

    First Cummins 6B Engine as it arrived at Precision

  • Cummins 6B Early Photos

    Cummins 6B Early Photos

  • Cummins 6B

    Cummins 6B

  • Cummins 6B - more early photos

    Cummins 6B - more early photos

  • Cummins 6B - with original cooler

    Cummins 6B - with original cooler

  • Cummins 6B as we start reassembly

    Cummins 6B as we start reassembly

  • Cummins 6B - full rebuild commences

    Cummins 6B - full rebuild commences

  • Second Cummins 6B Engine in for rebuild

    Second Cummins 6B Engine in for rebuild

  • Cummins 6B - second engine prior to strip

    Cummins 6B - second engine prior to strip

  • Cummins 6B - also for rebuild

    Cummins 6B - also for rebuild

  • Cummins 6B - both engines ready for delivery

    Cummins 6B - both engines ready for delivery

  • Cummins 6B - full rebuild of both engines complete

    Cummins 6B - full rebuild of both engines complete

Back to top ^
News Headlines

Changes to MOT Rulings Affect our own Services

The changes that have been imposed for MOT testing could have an impact on your vehicle when it is in to Precision Engine Services for ANY work at ANY Full Story...

Changes to our Summer Opening Hours

Please note that over the next few weeks, Precision will be altering their opening hours.   We will be open earlier each day, but closing Full Story...

Opening Hours:

Monday - Thursday: 0730-1700

Friday: 0730-1500

Precision Engine Services 48 Seafield Road, Longman Industrial Estate, Inverness IV1 1SG

Tel: 01463 235537 Fax: 01463 712684 Email:

Precision Engine Services Limited Registered in Scotland No: SC399507
Registered Office: 10 Knockbreck Street, Tain, IV19 1BJ. All paperwork to be sent to 48 Seafield Road, Inverness, IV1 1SG

website by plexus media