Computerised valve seat cutting machine. – allows us to machine numerous approach and exit forms to achieve maximum flow at low valve lifts. The automatic centring of the cutting head to the guide ensures perfect concentricity of the seat. The highly skilled job of shaping the inlet and exhaust ports and throats is carried out by hand. Chambers are also fettled by hand to re-profile and balance the capacities.
Performance and Competition Heads – Combinations of gas flowing of throats and ports, modifying chamber shapes, valve sizes and seat forms enable us to produce cylinder heads to the highest standards and specifications, delivering maximum power for both road and race use.
Lead-Free Conversions – a very important part of our engine program is to ensure that they are able to run efficiently and reliably on today’s changing fuels. A combination of the Head Shop and the Machine Shop enable us to modify heads to run on lead free fuel. The heads are machined to accept new valve seats, guides and valves of suitable material to ensure your engine’s safety wherever you fill up.
Inspection / correction – all heads are inspected and pressure tested, cracks or leaks being repaired by welding.
Wear of tappet cup bores and camshaft bearing housings are repaired by the Machine Shop by line boring and fitting of bearing shells for the camshafts and boring tappet cup guides to accept RSW oversize tappets with running clearances more suited to today’s modern lubricants. Cylinder heads are skimmed in the machine shop, to ensure perfect flatness, prior to final assembly by the engine shop.