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.

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.

Model Number 133230
Type 8124-01
Displacement 206
Bore 2.5615/2.5625
Stroke 2.438
Compression Ratio 6.5 to 1
Factory Timing 22 degrees BTDC
Description Wrench / socket size Torque
Magneto Armature #10-24 X .875 30 lb-in. (3 Nm)
Back Plate (to cylinder) 100 lb-in. (11 Nm)
Blower Housing 1/4 -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 .410 30 lb-in. (3 Nm)
Cylinder Head 140 lb-in. (16 Nm)
Cylinder Shield #8-32 X .410 30 lb-in. (3 Nm)
Exhaust Manifold 140 lb-in. (16 Nm)
Fan Retainer 140 lb-in. (16 Nm)
Fuel Tank 1/4 -20 X .625 80 lb-in. (9 Nm)
Flywheel Guard #8-32 X .410 30 lb-in. (3 Nm)
Flywheel Nut 60 lb-ft.
Cylinder Head Bolts 5/16-18 X 2.46 140 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 Drive 125 lb-in. (14 Nm)
Rewind Guard 5/16-18 X 1.125 30 lb-in. (3 Nm)
Spark Plug 5/8" Deep 180 lb-in. (20 Nm)
Stop Switch Bracket #8-18 24 lb-in. (3 Nm)
Stop Wire #10-32 30 lb-in. (3 Nm)
Crankcase Cover/Sump 1/4-20 X 1.25 120 lb-in. (14 Nm)

what could be causing oil to leak from the bottom of the engine? I have it raised up on a slight angle on an engine mount and its recently been leaking oil 

Asked by: CarterK
It is likely a seal. I would recommend working with a dealer to determine the cause of the leak. You can find a dealer here: http://bit.ly/GYxQ2N
Answered by: Nicole_BriggsStratton
Date published: 2015-01-02

where can i get an exhaust and an air filter for the engine? i want to make sure i buy the right stuff

Asked by: CarterK
To locate any information on your engine, you will first need the model type and code. Please see the following link for assistance in locating these numbers: http://bit.ly/17rzznN Once you have this information you can find information on your engine here: http://bit.ly/12pIs1I Select engine as your product type and follow the directions for entering the model type and trim into the search fields.
Answered by: Nicole_BriggsStratton
Date published: 2015-01-02

what type of fuel does a raptor 3 run in it ?

Asked by: chuck from state farm
The Raptor engine was factory built to run standard 87 octane pump gas. This is the same standard for all of our racing engines.
Answered by: Nicole_BriggsStratton
Date published: 2014-12-03

Would a small leak in jthe gaket inbetween  gas tank and carb cause the motor to cut out at higher rpms??

Asked by: fretz
Yes, this could cause your issue. Please change out that gasket.
Answered by: Nicole_BriggsStratton
Date published: 2014-11-06

Could you please tell me where I can purchase billet connecting rods for my 14hp boxer, model 400707

Asked by: Lionel
You can purchase parts through a local racing dealer. You can find a racing dealer here: http://bit.ly/GYxQ2N
Answered by: Nicole_BriggsStratton
Date published: 2014-08-02


Asked by: sierra11
The best source of information on this engine would be to contact a Briggs Racing dealer in your area. Here is a link to the dealer locator: http://bit.ly/GYxQ2N
Answered by: Nicole
Date published: 2014-08-02

where can I find a manual to rebuild my 5hp raptor motor for my kart

Asked by: BDUB
you can get all of the information for Briggs racing engines at http://www.briggsandstratton.com/engines-racing/
Answered by: Terri
Date published: 2014-08-02
  • 2015-01-31T18:20CST
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