Raptor

Raptor Engine by Briggs & Stratton Racing

The Raptor engine’s role in racing dates back to before the Briggs & Stratton Racing division began in 1991. The workhorse of our racing line for almost 20 years, this engine line CEASED production in 1999 due to impending E.P.A. regulations. We ask that you contact your source of supply about parts availability as many parts have been discontinued.

Features

  • Racing connecting rod with integral oil dipper and larger radius I-beam.
  • Soild fuel tank bracket and improved tank to bracket connection.
  • Oil impregnated bronze exhaust valve guide for long competition life.
  • Revamped carburetor machining for uniform high- flow.
  • Redesigned head gasket for torque retention and heat transfer.
  • Longer high-strength head bolts for better control of head torque.
  • Silicon-beaded crankcase cover gasket for oil control and torque retention.
  • Upper retainer controls valve for spring control.
  • "As Cast" block, head and crankcase cover reduces combustion deposit and debris collection on internal parts.
General Specifications
Model Number133230
Type8124-01
Displacement206
Bore2.5615/2.5625
Stroke2.438
Compression Ratio6.5 to 1
Factory Timing22 degrees BTDC

Technical / Torque Specifications

Description Wrench / socket size Torque
Magneto Armature #10-24 X .87530 lb-in. (3 Nm)
Back Plate (to cylinder) 100 lb-in. (11 Nm)
Blower Housing1/4 -20 X .625 80 lb-in. (9 Nm)
Breather Screw#10-24 X .594 30 lb-in. (3 Nm)
Carburetor (to manifold) 65 lb-in. (7 Nm)
Connecting Rod 100 lb-in. (11 Nm)
Clutch Mount Screw#8-32 X .41030 lb-in. (3 Nm)
Cylinder Head 140 lb-in. (16 Nm)
Cylinder Shield#8-32 X .41030 lb-in. (3 Nm)
Exhaust Manifold 140 lb-in. (16 Nm)
Fan Retainer 140 lb-in. (16 Nm)
Fuel Tank1/4 -20 X .62580 lb-in. (9 Nm)
Flywheel Guard#8-32 X .41030 lb-in. (3 Nm)
Flywheel Nut 60 lb-ft.
Cylinder Head Bolts5/16-18 X 2.46140 lb-in. (16 Nm)
Intake Air Horn 45 lb-in. (5 Nm)
Intake Manifold (to cylinder head) 80 lb-in. (9 Nm)
Oil Drain Plug (internal)3/8" Square Drive125 lb-in. (14 Nm)
Rewind Guard5/16-18 X 1.12530 lb-in. (3 Nm)
Spark Plug 5/8" Deep 180 lb-in. (20 Nm)
Stop Switch Bracket#8-1824 lb-in. (3 Nm)
Stop Wire#10-3230 lb-in. (3 Nm)
Crankcase Cover/Sump1/4-20 X 1.25120 lb-in. (14 Nm)

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