{"product_id":"ultimate-racing-m-3r-21-nitro-racing-engine","title":"Ultimate Racing M-3R .21 Nitro Racing Engine *Discontinued","description":"\u003cmeta charset=\"utf-8\"\u003e\n\u003cp\u003eThis is the 3 port .21 Off-Road Ultimate M3R Competition Engine. After launching the M3S engine back in September 2017, Ultimate Racing presents its last creation, the M3R.\u003c\/p\u003e\n\u003cp\u003eLike the M3S, it’s a 3 transfers OS based engine, with the same configuration and power than its predecessor.\u003c\/p\u003e\n\u003cp\u003eUnlike the M3S, the M3R incorporate the following parts:\u003c\/p\u003e\n\u003cp\u003e- High precision steel rear bearing made in Japan.\u003c\/p\u003e\n\u003cp\u003e- Balanced crankshaft with tungsten weight and silicone filling.\u003c\/p\u003e\n\u003cp\u003e- 6.5mm plastic venturi.\u003c\/p\u003e\n\u003cp\u003eThe M3R, like the M3S, is a long stroke, high torque and extreme power engine with low fuel consumption. Produced with the guaranteed OS quality, the M3R is a cheaper option with the same power and performance.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eCOOLING HEAD\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe cooling head has been redesigned by Modelix. It’s not as low as the B2102 lower profile but it’s lighter so it keeps the center of gravity as low as the B2102 but improving its performance on very high temperatures. It’s the same head as the M3T and M3S engines.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eCARBURETOR\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe Ultimate M3R engine comes with the same carburetor than the M3S and M3T engines where high speed needle holder has been redesigned for a better refrigeration of the fuel flow into the carburetor, lowering the temp of the carb, and as a consequence it’s more stable with a great idle stability, improves fuel mileage and overall engine performace.\u003c\/p\u003e\n\u003cp\u003eBesides this, the uniball joint of the carb slide has also been 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.\u003c\/p\u003e\n\u003cp\u003eThis carb offers a higher accuracy tuning, a very interesting advantage to experienced drivers.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eBACKPLATE\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe backplate is CNC machined and made of 7075-T6 Swiss Aluminum. The reason of making it with this material is to make it harder than the original and reduce the conrod-backplate friction increasing the life of the conrod and improving engine efficiency and performance.\u003c\/p\u003e\n\u003cp\u003eThanks 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.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eCRANKSHAFT\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe M3R crankshaft has been designed by the O.S team of engineers to ensure an optimum flow of fuel thanks to the aerodynamic design and the silicone filling. It is balanced with a tungsten weight in order to increase the inertia to rotation.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eBEARINGS\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eIn line with the high quality and performance of this engine, its two high precision made in Japan bearings ensure high idle stability, longer life and low friction at high temperatures.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eVENTURIS\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe engine is supplied with a 6.5mm plastic venturi.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eSLEEVE AND PISTON\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe sleeve with 3 inlet port and an exhaust port guarantee a low fuel consumption with a very high but smooth and linear power.\u003c\/p\u003e\n\u003cp\u003eBoth, the sleeve and piston are made from a high strength aluminium bar to improve its durability.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003e\u003cstrong\u003eTECHNICAL SPECIFICATIONS\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eDisplacement: 3,46 cc\u003c\/li\u003e\n\u003cli\u003ePower Output: 2.75 PS\/2.71 hp @ 34.000rpm\u003c\/li\u003e\n\u003cli\u003ePractical Range RPM:  4.000-44.000\u003c\/li\u003e\n\u003cli\u003eBore x Stroke: 16,27x16,80\u003c\/li\u003e\n\u003cli\u003eSleeve: 3 + 1 ports\u003c\/li\u003e\n\u003cli\u003eRear Ball Bearing: steel\u003c\/li\u003e\n\u003cli\u003eFront Ball Bearing: steel\u003c\/li\u003e\n\u003cli\u003eCrankshaft: 14 mm\u003c\/li\u003e\n\u003cli\u003eCarburetor: Aluminum w\/ insulator gasket\u003c\/li\u003e\n\u003cli\u003eGlow plug: P3 Turbo\u003c\/li\u003e\n\u003cli\u003eExhaust Position: rear\u003c\/li\u003e\n\u003cli\u003eWeight:  345g\u003c\/li\u003e\n\u003cli\u003eFuel type: 25% nitro. Recommended fuel Nitrolux.\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Ultimate Racing","offers":[{"title":"Default Title","offer_id":32895798050953,"sku":"UR3401-M3R","price":380.0,"currency_code":"EUR","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0682\/8293\/products\/UR3401-M3R-1__42420.1556194554.jpg?v=1584726641","url":"https:\/\/www.edusportsonline.com\/products\/ultimate-racing-m-3r-21-nitro-racing-engine","provider":"edusportsonline","version":"1.0","type":"link"}