Click on a thumbnail to see the full-size image
Bekaert (SOREVI) with technical support from Xcel...
Race-Proven Exhaust Valve Coating
Innovative Diamond-Like Carbon (DLC) coating for use on exhaust valves prevents unleaded fuel damage to race cars
Bekaert (SOREVI), a worldwide leader in performance engine coating technology, and Xceldyne Technologies, a direct manufacturer of titanium valves, have announced the development of Cavidur®HT a Diamond-Like Carbon (DLC) coating and a competitive alternative to existing CrN coatings for exhaust valves. The companies’ combined solution will address wear issues resulting from the use of unleaded fuel in NASCAR.
NASCAR teams found excessive valve face & seat wear after the mandated switch to unleaded fuel due to the reduced amount of sulphur in unleaded fuel, creating a dry fuel condition, similar to ethanol and methanol fuel systems. NASCAR teams requested Bekaert to research a suitable alternative to the existing CrN (Chromium Nitride) coatings that are currently applied to exhaust valves. Bekaert’s Cavidur® DLC coatings address these wear and erosion issues,
as they provide a permanent lubrication and keep friction low, successfully avoiding excessive wear and deformation of these
To serve motor sport professionals all over the globe, Xceldyne has developed a worldwide presence, with facilities in the US as well as in Europe. Bekaert and Xceldyne’s also aligned their cooperation on a global level, enabling both companies to guarantee timely deliveries and support. The valves are coated at Bekaert’s US facility in Raleigh-Durham, North Carolina for the American market and at Bekaert’s Limoges facility in France for the European market. Thanks to their global presence, Bekaert and Xceldyne’s combined logistic operations go without a hitch.
More information is available from Bekaert at www.bekaert.com/bac.