CLASSIC OUTBOARD RUNABOUT (COR-100) TECHNICAL RULES
Inline 6 and OMC cross flow V-4 engines originally manufactured and made available to the general public with a displacement of 100 cu. in. or less. Engines built and manufactured strictly for racing shall be prohibited. The engines must be naturally aspirated and run on gasoline containing no oxygen carrying additives introduced to the combustion chamber in any way. The maximum displacement for any engine shall be 105 cu. in. to provide for cylinder "clean-up". Unless specifically forbidden in the following rules, engines may be modified in any way. Strangler and T-2 type engines shall not be allowed in the COR-100 class.
MERCURY AND OMC MANUFACTURED POWERHEADS: (COR-100)
1. Engines must be of a standard production design. Special purpose engines shall not be permitted. 2. Ports may be modified, raised, or enlarged, but shall remain in their original positions. Ports may not be added to the cylinders. 3. Powerheads must exhaust no higher than the mid-section. 4. The engine may have no more than 4 carburetor venturis (OMC) and 3 single venturi carburetors (Mercury). 5. All critical or performance related parts/components (except pistons, rings, bearings, reeds, electronics, sealing components etc.) shall be made by the OEM. Parts may be exchanged with other model engines from the same manufacturer. No aftermarket parts or mixing of parts from other manufacturers shall be allowed.
See rules governing mid-sections for COR-2.0's. (same rules apply)
See rules governing lower units for COR-2.0 (same rules apply).
See rules governing COR-2.0 rules with the following exceptions:
1. V-Bottom and Flat-Bottom boats only. Mod VP's shall be prohibited 2. Weight: Minimum of 1175 lbs. measured in the same manner as the COR 2.0's with the same rules regarding ballast etc. 3. Length: 15' 6”, measured in the same manner as the COR 2.0's.