Our Services

Roland Alsop Machine Shop first saw the light of day as a passionate hobby in 1965. Our first premises opened in Bracknell but were soon outgrown by the demand for our automotive engineering expertise and experience.  In 1970 Roland Alsop moved to their current location in Chobham, Surrey.

The company started with a simple bench drill, portable boring machine, Prince crank grinder, some valve seat re-facing equipment, a press and a huge amount of enthusiasm and belief.  Now, we have state of the art equipment and what we believe is the best equipped machine shop in the UK.

We have been successfully supplying machining services (see below) and parts to our customers for 60 years.  Our workshop staff have a combined experience of 102 years coupled with a genuine love for what they do.

Roland Alsop Machine Shop offers the following services:

    • Blueprint engine machining on our Rottler EM69ATC race engine machining centre
    • Reboring cylinders finished with diamond and plateau honing
    • Surfacing of cylinder block and head faces using PCD tooling for aluminium and CBN tooling for cast iron
    • Valve guide replacement
    • Diamond honing of valve guides
    • Lead-free exhaust insert conversions
    • Refacing of valves
    • Valve seat cutting. Basic stoning of the seats, 3 angle  valve seat cuts on our Rottler guide and seat machine or full valve seat profiling on our Newen Contour BB CNC valve seat machine
    • Cylinder head gas flowing (full race to fast road)
    • Cylinder head flow bench test work carried out on our Superflow Flow bench with velocity checks and flow port analysis software
    • Injector flow testing on our ASNU Injector tester
    • Engine crankshaft assembly balancing on our custom-made Hines Dominator balancing machine (as used in NASCAR)
    • Crankshaft journal grinding
    • Cylinder head pressure testing
    • Bead blasting and shot blasting of components
    • Brake disc and flywheel refacing
    • Main tunnel line boring
    • Con-rod resizing

Plus, many others, just ask if it’s not listed above!  Please contact us via phone or email: click here.

© 1965 – 2025 Roland Alsop