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         This is the RB Concept TM728 5-Port Monster Truck Engine
                           with Pull Starter.

FEATURES: Fits most monster trucks that use .21 - .25 cu in (3.4 - 4.1cc)
            engines
          Ten fin orange colored aluminum cooling head
          Aluminum connecting rod, grooved for better lubrication and
            reliability
          "ABC" cylinder & piston set, "A"luminum piston,"B"rass
            cylinder liner, that is "C"hrome plated
          Nylon body slide valve carburetor with steel base

INCLUDES: RB Concept TM728 5-Port Monster Truck Engine with glow plug, pull
           starter, slide valve carburetor, exhaust gasket and instructions

REQUIRES: Fuel: Car blend with 10%-25% nitro content
          Tuned Pipe and Manifold depending on vehicle, RB Concepts recommends
            their TM series #01900-401
          Glow plug wrench and track equipment

SPECS:    Displacement: 0.28cu in (4.67cc)
          Bore: 18.35mm
          Stroke: 17.60mm
          Intake Ports: 5 bypass
          Exhaust Ports: 1
          Crankshaft: 14mm
          Carburetor Intake Diameter: 9mm
          Carburetor Settings: Main Needle, 4 turns from closed
                               Idle Needle, 6 turns from closed
          Weight: 4.2 6oz (426g)

          Distance from Starter to end of Crankshaft: 4.5" (114mm)
          Height from Mounting Tab to top of Cylinder Head: 4.5" (114.5mm)
          Center of Mounting Holes Same Side:  0.83" (21mm)
          Center of Mounting Holes Opposite Side: 1.5" (37.5mm)
          Mounting Hole Diameter: 0.12" (3.2mm)
          Distance from Front Bearing to End of Crankshaft: 1.2" (29.8mm)
          Width of Crankcase Below Mounting Tabs: 1.3" (32.5mm)
          Width at Mounting Tabs: 1.8" (45mm)
          Distance/Bottom of Crankcase to Crankshaft Center: 0.71" (18mm)
          Distance/Exhaust Port Center to Crankshaft Center: 1.2" (32mm)
          Diameter of Cooling Head: 2.4" (60mm)

COMMENTS  Some notes on rotary and slide valve carburetors;
          Rotary carbs offer a larger response in the middle of the power
            band. This works well for off-road applications when throttle
            response must be varied.
          Slide Valve carbs provide greater response at the beginning and end
            of the power band. This works well for on-road and racing
            applications for fast take-offs and high speed.

                                                                   jxs 11/21/07
                                                                         ir/jxs



– If you need more information, use these RB Products resources –

E-mail: b.howard@rb-usa.com
Web Site: http://www.rb-usa.com/
Phone: 817-876-9707


 
Postal Address:
RB Products
5611 COLLEYVILLE BLVD #160
COLLEYVILLE, TX 76034  








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