Building off of the success of the Animal Racing engine, the World Formula was launched in 2003 in accordance with the CIK World Formula class rules. This complete engine package balances the latest in engine design and technology to provide racers with a consistent, low-maintenance and low-cost platform, in which to sharpen their driving skills and chassis setup. Hand-built and individually tested in our Milwaukee, Wisconsin skunk works.
Engine Specifics
Highlighted Features
- Dual Ball-Bearing, RACING Reinforced Cylinder
- Billet Rod
- Slotted, Stelite-Faced, Ground Cam w/ Compression Release
- Dual, High-Silicon Valve Springs
- PVL™ Digital Ignition System w/7,100 RPM Limiter
- CNC D-Shape Intake Port
- Walbro™ Round -Slide Carburetor
- Dana™ Fire-Ring Head Gasket
- Racing Crankshaft w/ Induction-Hardened Crankpin
- Green™ Air Filter
- Federal Mogul™ Moly-Coated Cam Ground, Barrel-Faced Piston
- Chrome-Faced, Racing Only Ring Package
- Port-Liner, Exhaust System
- Mikuni™ Fuel Pump
- Noram™ Clutch w/ Quick Change Sprocket Set
- Automotive 3-Piece Valve Retainer System
- Beefy Rocker Arm Stud Nuts
General Specs
- Model: 124335
- Type: 8105
- Displacement: 12.48 Cu. in. - 206 cc
- Design: Slant, 30 degree,
- Overhead Valve, Electric Start
- Bore: 2.6875/2.6885 in.
- Stroke: 2.2 in.
- Compression Ratio: 9.5 to 1
- Factory Timing: 29 degrees BTDC
Technical/Torque Specs
| Description | Wrench/socket size | Torque |
|---|---|---|
| Air Guard | 7mm | 40-50 lb-in. (4.5-5.6 Nm) |
| Blower Housing | 10mm & 3/8" | 60-110 lb-in. (7-12.5 Nm) |
| Carburetor (to manifold) | 10mm | 80-110 lb-in. (9-12.4 Nm) |
| Connecting Rod | T27 | 140-150 lb-in. (16-17 Nm) |
| Cylinder Head Bolts | 10mm | 200-220 lb-in. (20-27 Nm) |
| Exhaust Brace Screws | 10mm | 95-125 lb-in. (11-14 Nm) |
| Exhaust Stud | 10mm | 95-125 lb-in. (11-14 Nm) |
| Flywheel Nut | 15/16 | 55-75 ft-lbs. (74.5-101 Nm) |
| Flywheel Fan | 10mm | 180-240 lb-in. (20-27 Nm) |
| Intake (to cylinder) | 5mm Allen | 70-90 lb-in. (8-10.2 Nm) |
| Oil Drain Plug | 3/8" | 100-125 lb-in. (11-14 Nm) |
| PVL Module | 7mm | 20-35 lb-in. (2.3-4 Nm) |
| Rocker Arm Stud | 7/16" | 90-120 lb-in. (10-14 Nm) |
| Rocker Arm Plate | 10mm | 70-90 lb-in. (7.9-10.1 Nm) |
| Rocker Arm Set Screw | 1/8" Allen | 50-70 lb-in (5.6-7.9 Nm) |
| Spark Plug | 5/8" Deep | 95-145 lb-in. (11-16.4 Nm) |
| SIde Cover | 10mm | 95-125 lb-in. (11-14 Nm) |
| Starter Gear | #2 Phillips | 35-53 lb-in. (4-6 Nm) |
| Top Control Plate | 10mm | 70-90 lb-in. (8-10 Nm) |
| Valve Cover | 10mm Lower & 3/8" | 30-60 lb-in. (3.5-7 Nm) |
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