This is the O.S. Engines Speed B2102 1/8 scale Competition Buggy Engine.                                                                                          ****** Because of the expressed racing nature of this engine, ******            ******     it is NOT covered by the O.S. 2 Year Warranty      ******                                                                                       FEATURES: Low cylinder head reduces the buggy's center of gravity by 0.67"                        (17mm) for better stability during aggressive driving                                  Newly designed 22C slide valve carburetor for better fuel economy                        Tungsten weighted crankshaft with diamond-like coating and silicon potting                                                                                Bypass of crankcase is modified for better performance                                                                                                INCLUDES: O.S. Engines Speed B2102 Engine with P3 Turbo Glow Plug                                 6.5mm Carburetor Reducer in Red                                                         Exhaust Seal Ring                                                                       One each 3mm, 16mm and 18mm Dust Caps                                                   Instruction Manual                                                                                                                                    REQUIRES: Exhaust System such as the O.S. Engines T2090SC Tuned Pipe                              Fuel: 10-30% nitro content, 20% recommended for break-in                                Air filter, glow starter and track equipment                                                                                                          SPECS:      

Engine;                                                                       Displacement: 0.211 cu (3.46 cc)                                                Bore: 0.646 in (16.40 mm)                                                       Stroke: 0.646 in (16.40 mm)                                                     Practical RPM: 4,000-42,000                                                     Power Output: 2.65 PS/2.61 hp @ 34,000 rpm                                      Crankshaft Size: UNF1/4-28                                                      Distance/Mounting Hole Centers Same Side: 0.83" (21mm)                          Distance/Mounting Hole Centers Opposite Side: 1.45" (37mm)                      Width of Crankcase below Mounting Tabs: 1.2" (31.6mm)                           Width of Mounting Tabs: 1.8" (45mm)                                             Height/Mounting Tab to top of Cylinder Head: 2.6" (65.9mm)                      Height/Mounting Tab to center of Exhaust Outlet: 1.1" (28mm)                    Height Crankcase Bottom to top of Cylinder Head: 3.2" (81.5mm)                  Length of Crankshaft end to Front Bearing: 1.2" (29.5mm)                        Length of Crankshaft end to Backplate: 3.7" (94mm)                              Length of Crankshaft end to Center of Crankcase: 2.9" (73.5mm)                                                                                                  Carburetor Settings;                                                           (Carburetor is preset from factory and should only require very small adjustments)                                                            Needle Valve: 3 turns open from fully closed                                    Mixture Control Valve: One turn screwed in from flush position with carb body                                                                     Metering Needle: 0.3-0.4mm protruding from flush position with carb body                                                                          Throttle Stop Screw: Approximately 0.5mm from carb body when viewed from above