This is the Thunder Tiger Pro .18BX 2-Stroke Model Car Engine w/Pull Starter.

FEATURES: Side exhaust
          CNC machined aluminum heat sink and backplate
          ABC piston and sleeve "A"luminum piston, "B"rass cylinder liner that
            is "C"hrome plated
          Hyperutectic machined Al-Si ringed piston
          Dual ball bearing-supported SG crankshaft
          Two needle valve rotary carburetor
          Three year limited warranty through Hobby Services beginning at date
            of purchase

INCLUDES: Thunder Tiger Pro .18BX Model Car Engine with carburetor, pull
            starter, air filter with foam element, decals and instruction
            manual

REQUIRES: Fuel: 20% lubricant and 10-30% nitro content, synthetic/castor blend
            lubricant recommended (do not use more than 10% nitro content for
            break in)
          Glow Plug: Long type recommended such as the OS #8
          Glow starter, plug wrench and field equipment

SPECS:    Displacement: 0.181 cu in (2.97cc)
          Bore: 0.638" (16.2mm)
          Stroke: 0.567" (14.4mm)
          Practical RPM: 3,000 - 32,000
          Output: 0.8 HP @ 31,000 rpm

            Carburetor Settings-NOTE carburetor is preset from the factory and
            requires only small adjustments
          Needle Valve: 3 - 3-1/2 turns counterclockwise from closed
          Air Bleed Screw: After setting needle valve, 1/8 turn clockwise if
            mixture is too rich or 1/8 turn counter-clockwise if mixture is too
            lean

          Height from Mounting Tab Bottom/Top of Cylinder Head: 2.9" (74.5mm)
          Height from Crankcase Bottom to Top of Cylinder Head: 3.4" (86.1mm)
          Width at Mounting Tabs: 1.5" (39mm)
          Width of Crankcase below Mounting Tabs: 1" (25.4mm)
          Center of Mounting Holes Same Side: 0.43" (11mm)
          Center of Mounting Holes Opposite Side: 1.2" (32mm)
          Center of Crankcase to Front Bearing: 1.3" (34.5mm)
          Distance from Starter to Front Bearing: 2.8" (71mm)

                                                                   jxs 10/21/10
                                                                         ir/jxs