Rough Diamond services include:

  • Engine building – specialising in big and small block Chevrolet, Vauxhall XE and Ford ‘Kent’ engines – but anything with pistons considered!
  • Transmission repair and re-build
  • Axle servicing and ratio changes
  • Fabrication of one off components and short run projects
  • Chassis modifications
  • Welding – steel, stainless steel and aluminium
  • Race preparation
Of course we are now the authorised Tony Morris Carburetors UK agent!
  • Refurbishment and rebuilds to all Holley style carburetors
  • Optimization and adjustment to make your carb work just how it should
  • Conversions. From gas to alcohol – or even the other way around!
  • New bespoke built to order carburetors. After a thorough consultation, we will build a carburetor to exactly suit your requirements
Why use us?

Dave has a wealth of experience of working on a wide range of vehicles over many years. He’s also a racer himself, so he understands what’s important to you. As a result, he has built a reputation for:

  • Being a great problem solver
  • Having meticulous attention to detail
  • Being totally reliable in terms of quality and delivering to deadlines
  • Making the most of limited resources
  • Being a nice bloke to do business with!

Here are some examples of work we do:



One of our main customers is Caterham 7 specialists Redline Components Ltd. We manufacture a range of parts for them, including this low profile, increased capacity sump and oil pick-up for Ford Kent engines.

Twin blown 502 Engine montage 2

A trio of Chevys! A twin-blown 502, a ‘Stovebolt’ six and a a 331 Small Block.

  Motor 29.4.15 2

A 454 big block Chevy street engine and a blown nitro Hemi.

  Jon Spoard HRDs 1

And of course, the Rough Diamond competition altered is all Dave’s own work!