RB CONCEPT WS7T L2G has a new re-enforced crankcase, and has also been re-looked at the baseline, for better stability and strength. It has the L2G low profile head which increases cooling efficiency and comes with a new Turbo combustion Chamber. This new engine has a lot of exclusive features: the special RB Concept Coating, the new off Road Carburettor including extra stiffer and anodized body and interior steel rings plus a 8mm Venturi. RB CONCEPT WS7T L2G also has a new backplate with improved gazflow and improved o-ring positioning. Keeping its smooth and rapid acceleration, the RB CONCEPT WS7T L2G is the engine for those who want the power of the World Champion!

Crankcase

The RB CONCEPT WS7T L2G crankcase has been designed and developed by Rody Roem. It is light, rigid and strong to achieve optimum performance. The crankcase material is a highly developed alloy, which provides greater stability. It is formed utilizing a vacuum system, which avoids the creation of air cavities during the moulding process.

Porting

The RB CONCEPT WS7T L2G internal porting of this new crankcase has been improved and optimized to provide a more efficient gasflow in combination with the 7 intake ports of the sleeve. Included in the crankcase carburettor spigot you will find an o-ring system which prevents the carburettor o-ring from being damaged when removing and assembling the carburettor from the crankcase.

Piston Liner

The RB CONCEPT WS7T L2G piston and sleeve combination are «ABC», better known as Aluminium Brass and chrome. The piston is cast from aluminium, the sleeve is a brass cylinder on the outside that has been hard chromed on the inside to provide longer life. The sleeve itself has a total of 8 functioning ports. There are 7 intake ports, designed in such a way as to get improved fuel consumption while also giving unmatched power . This unique 7-port sleeve is now a standard which all others have adopted. Another RB innovation!

Conrod

The connecting rod in the RB CONCEPT WS7T L2G is what we refer to as a competition rod. It has been manufactured from aircraft grade alloy and is ultrasound checked for stability and strength. It consists of a double bushing design that prevents any premature failures from happening during high competition use. The shape of the connecting rod has been designed as aerodynamically as possible to prevent obstruction of the internal gas flow into the cylinder, add to this a special oil hole in the bottom and top of the rod to aid in lubrication, and these competition rods are ready for what you can throw at them.

Crankshaft

The shape of the new Bi-Turbo SQC(SQuare Concept) crankshaft gives astonishing performances to the new RB CONCEPT WS7T L2GI ! The timing and gas flow have been specially designed for the off-road specifications. The special drawing of the crankshaft has been studied to offer the best weight balance possible.

Bearings

The front-bearing of this RB CONCEPT WS7T L2G is featured with 2 rubber shields(inside and outside) to prevent dust or water to come into the engine and deteriorating the bearing itself.The 13mm main-bearing is of very high quality and has its line of balls placed more close to the conrod to get a better stability of the crankshaft.

Cooling-head

The new cooling head of the RB CONCEPT WS7T L2G lowers the centre of gravity to improve the handing of the car and the new shape increases the cooling capacity.

Carburetor

The RB CONCEPT WS7T L2G multicomposite carburettor is mainly made out of nylon to prevent overheating of the fuel entering the engine (vaporlock) when the engine is very hot. The base of the carburettor has a new steel insert, which goes through to the top of the housing, so that its strength and stability is assured. This carburetor is supplied with an 8mm venturi and can receive the following venturis of 6, 7 or 9mm diameter depending upon the power you need and fuel consumption you want to obtain. The idle screw has been repositioned and the slide is now easier to connect to the throttle linkage.

Glowplug

The RB CONCEPT WS7T L2G uses a Turbo glowplug, which we developed for competition use as it is recognized to be strong and reliable. The efficiency of the engine is better and the fuel mileage is also improved.