ULTIMATE - Nitro Engine, MTS Ceramic, 1/8 Off Road

This is the 3 port .21 Off-Road Ultimate MTS Ceramic Competition Engine. Made by the prestigious Japanese O.S. Engines brand and based on their long stroke Spec II configuration, the MTS features a DLC coated crankshaft with two balanced tungsten, modified backplate, and 21J3 carburetor to improve performance. The MTS is a great choice for use in nitro buggy and truck applications. This engine provides amazing power and great fuel consumption. It has exceptional low to mid-range torque and a great idling. COOLING HEAD The cooling head has been redesigned by Modelix. It‚Äôs a low profile and light cooling head that keeps a lower center of gravity improving its performance on high temperatures. CARBURETOR The MTS comes with the 21 J3 carburetor. Compared to the original OS 21 J3 carb, its high-speed needle holder was redesigned for a better refrigeration of the fuel flow into the carburetor, lowering the temp of the carb, and consequently it‚Äôs more stable with a great idle stability, improves fuel mileage and overall engine performance. Besides this, the uniball joint of the carb slide was also modified with two stoppers instead of one. With this new modified design, you can easier adjust the angle of the uniball joint without having to disassemble the engine. This carb offers a higher accuracy tuning, a very interesting advantage to experienced drivers. BACKPLATE The MTS backplate has been modified. The backplate is CNC machined and made of 7075-T6 Swiss Aluminum. It‚Äôs been milled to improve the gas flow going to the piston and improving engine efficiency and performance. Thanks to its design, you can remove the backplate without damaging the conrod even when it is on its lower position (PMI). The lateral grooves allow to easily remove the backplate without having to use any tool that can damage it. CRANKSHAFT The crankshaft of the MTS is an evolution of the DLC B2102 but with two balanced tungsten in order to increase the inertia to rotation. BEARINGS The MTS comes with the original Ceramic bearing in the rear and steel in the front. VENTURIS The engine is supplied with a 6.5mm aluminum venturi. SLEEVE AND PISTON The sleeve with 3 inlet port and an exhaust port guarantee a low fuel consumption with a very high but smooth and linear power. Both, the sleeve and piston are made from a high strength aluminum bar to improve its durability. TECHNICAL SPECIFICATIONS ● Displacement: 3,49 cc ● Power Output: 2.61 hp @ 34,000 rpm ● Practical Range RPM: 4,000 - 42,000 rpm ● Bore x Stroke: 16,27x16,80mm ● Sleeve: 3 + 1 ports ● Rear Ball Bearing: ceramic ● Front Ball Bearing: steel ● Crankshaft: 14 mm ● Carburetor: 21 J3 ● Glow plug: P3 Turbo ● Exhaust Position: rear ● Fuel type: 16% nitro. Recommended fuel Nitrolux.