1. Restricted to "V" bottom, Tunnel, and modified Tunnel hulls.
2. Fuel is limited to gasoline with Two-Cycle outboard oil only. Two-Cycle oils containing oxidizers or fuel additives of any kind are not allowed.
3. Nitrous Oxide is not allowed.
4. Any lower unit except a Speed Master is allowed. Boat must have F-N-R shifting from driver's seat.
5. Small diameter lower units (other than Speed Masters) can be used but are assessed a 50 pound weight penalty (note: when a small diameter lower unit is standard on a particular motor, there is no penalty).
6. An engine cowl (modified or stock) covering the flywheel is required.
7. Refer to the Modified Class weight table to determine the exact racing weight for boats with various size engines.
8. Kill switch is required on electric fuel pump(s).
9. No multi-speed shifting midsections or multi-speed shifting lower units.
10. Only OEM factory produced components are allowed except as noted. Modifications to factory components are allowed unless specifically excluded or limited.
11. Aftermarket TPI, fuel regulator, fuel pump, spark plugs, stator, trigger and switchboxes are allowed.
12. Engine porting modifications are allowed.
13. No stroker crankshafts. Crankshafts can be balanced but not lightened.
14. No Mercury/Mariner Z-Ports or 2.5 Bridgeports.
15. OEM or equivalent after market pistons only. Pistons may be modified.
16. OEM connecting rods only. Rods may be modified.
17. For EFI motors, the ECU, fuel rail, and injectors must be OEM.
18. No remote fuel curve altering devices either electrical and/or mechanical including vacuum pumps, potentiometers, fuel bypass solenoids etc.
19. Multiple fuel pump setups must not be sequentially wired or activated.
20. Center Air Inlet Merc HP EFI up to 3.625" maximum diameter bore allowed. No welding, grinding or fabrication on plenum permitted.
21. AMS/SVS/MAD EFI induction systems or mechanical fuel injection or Center Air Inlet Merc HP EFI with greater than 3.625" bore allowed with 50 pound weight penalty.
22. All Carbureted entries must use outboard motor carburetors only.
23. Flywheels can be balanced and lightened (must retain OEM magnets).
24. No mechanical or electrical timing or spark advance modules allowed.
25. No fuel pressure regulators outside of engine cowl on EFI motors.
26. 15" Short Shafts are OK but no F1/Champ 12" driveshaft housings.
27. No hydraulic up/down midsections. Hydraulic jack plates allowed.
28. Any CC OEM single plug cylinder heads on Mercury/Mariner allowed.
29. Aftermarket single plug heads OK on OMC, Yamaha and Suzuki allowed.
30. Aftermarket ignition and flywheels on OMC, Yamaha and Suzuki allowed. Flywheels must retain OEM magnets.
31. No cool cans allowed.
32. Reed cages must be OEM, modifications are allowed. Any reeds allowed.
33. Exhaust plate must be OEM, modifications are allowed.
34. Aftermarket bolt-on exhaust diffusers (tuners) are allowed.
35. Minimum recommended boat length 17'6".
(Back to top)
B. River Racer Class Rules:
1. Restricted to "V" bottom, tunnel and modified tunnel bottom hulls.
2. Fuel is limited to gasoline with Two-Cycle outboard oil only. Two-Cycle oils containing oxidizers or fuel additives of any kind are not allowed.
3. Nitrous oxide is not allowed.
4. Must use stock size lower unit with standard gear ratio. Driver must have F-N-R shifting from driver's seat.
5. No small diameter lower units allowed except where standard on motor.
6. Nose cones with or without low water intakes allowed.
7. Complete stock or lightweight engine cowl is required.
8. Refer to the river Racer Class weight table to determine the exact racing weight for boats with various stocks or modified engines.
9. Kill switch is required on electric fuel pump(s).
10. No multi-speed shifting midsections or multi-speed shifting lower units.
11. No "Drag" or "S3000" power heads or motors.
12. Only OEM factory produced components are allowed except as noted. Modifications to factory components are allowed unless specifically excluded or limited.
13. Aftermarket TPI, fuel regulator, fuel pump, spark plugs, stator, trigger, and switchboxes are allowed.
14. Engine porting and modifications are allowed.
15. No stroker crankshafts. Crankshafts can be balanced but not lightened.
16. No Mercury/Mariner Z-Ports or 2.5 Bridgeports.
17. OEM or equivalent aftermarket pistons only. Pistons may be modified.
18. OEM connecting rods only. Rods may be modified.
19. For EFI motors, the ECU, fuel rail and injectors must be OEM.
20. NO remote fuel curve altering devices either electrical and/or mechanical including vacuum pumps, potentiometers, fuel bypass solenoids etc.
21. Multiple fuel pump setups must not be sequentially wired or activated.
22. Center Air Inlet Merc HP EFI is allowed a 3.375" maximum diameter bore. No welding, grinding or fabrication on plenum permitted.
23. No AMS/SVS/MAD EFI style induction systems or mechanical fuel injection units permitted.
24. All carbureted entries must use OEM outboard motor carburetors only.
25. Flywheels can be balanced but not lightened (must retain OEM magnets).
26. No mechanical or electrical timing or spark advance modules allowed.
27. No fuel pressure regulators outside of engine cowl on EFI motors.
28. 15" short shafts are OK but NO F1/Champ 12" driveshaft housings.
29. No hydraulic up/down midsections but hydraulic jack plates are allowed.
30. Any CC OEM single plug cylinder heads on Mercury/Mariner allowed.
31. Aftermarket single plug heads on OMC, Yamaha and Suzuki allowed.
32. Aftermarket ignition and flywheels on OMC, Yamaha and Suzuki allowed. Flywheels must retain OEM magnets.
33. No cool cans allowed.
34. Reed cages must be OEM, modifications are allowed. Any reeds allowed.
35. Exhaust plate must be OEM, modifications are allowed.
36. Aftermarket bolt-on exhaust diffusers (tuners) are OK.
37. Minimum recommended boat length 17'6".
(Back to top)
C. Factory Stock Class Rules:
1. This class is intended for Hi Performance Ski, Fish, and/or Pleasure boats. To be legal in this class, the manufacturer must have offered the specific model with an interior originally configured for seating at least three people. The original interior may be removed during competition.
2. Boat models designed and sold exclusively as single seat race boats will not be allowed in this class.
3. Only stock outboards up to 225 HP are legal. OMC cross flow 235 HP motors will be allowed.
4. All outboard motors in this class must be legal stock motors as described in Section E of these rules.
5. Electronic Fuel Injection, Direct Fuel Injection, (OptiMax, Ficht, HPDI, etc.) and carbureted stock motors are all legal.
6. No Mercury Performance Product Motors or Mercury Racing motors are allowed except Mercury Pro Max 225, Pro Max 200 and Pro Max 150. The Pro Max 225X is not allowed.
7. 15" midsections are allowed in this class.
8. No motors with 12" midsections are allowed in this class.
9. All boats must meet the required minimum weight, as shown in the Stock Class Weight Table, with empty fuel tanks.
10. Ballast (sand or shot bags) may be used to make minimum weight. All ballast must be added in a safe manner and may be distributed in a maximum of three places in the boat.
11. All boats must use pump gasoline with Two-Cycle outboard oil only. Racing gas, Two-Cycle oils containing oxidizers of fuel additives of any kind are strictly not allowed. Fuel may be tested. NOTE: Pump gasoline with high alcohol content may fail the fuel test.
12. A 25-lb. weight penalty will be given for any Factory Stock motor that has its original 40 or 35-amp charging system replaced with a 16 or 9-amp system.
(Back to top)
D. Sport Racer Class Rules:
1. SPORT RACER is a class where a wide variety of boats that do not fit any of the other NEODA outboard classes can race.
2. The Tech Inspector (s) will determine eligibility for this class.
3. The boats will be weighed and required to meet a specific minimum weight. The reason this is done is to equalize the competition and give every entry an equal chance to win.
4. Ballast (sand or shot bags) may be used to make minimum weight. All ballast must be added in a safe manner and may be distributed in a maximum of three places in the boat. Specific entries may be required to have approved weight boxes.
5. Only V bottom, tunnel, or modified tunnel hulls will be allowed.
6. Fuel is limited to pump gasoline with Two-Cycle outboard oil only. Additives of any kind are strictly not allowed.
7. Safety equipment, as defined in this rulebook will be required.
(Back to top)
E. Definition of A “Stock” Motor:
The following modifications are allowed on a "Stock" motor:
1. Adding air inlets to the stock engine cowl or using a lightweight cowl.
2. Modification or removal of air box or the addition of velocity stacks.
3. Solid engine mounts and/or OEM one-piece exhaust plate.
4. Exhaust relief holes in lower unit or drive shaft housing.
5. Nose cone with or without low water pickups.
6. Electric fuel pump(s).
7. Plastic reeds.
8. After market tuners are allowed.
9. All other safety enhancements not affecting horsepower.
The following modifications are NOT allowed on a "Stock" motor:
1. Aluminum flex flywheel.
2. Cylinder porting or polishing.
3. High compression cylinder heads.
4. Cylinder head modifications or swaps, and/or dual spark plug conversions.
5. Carburetor, intake manifold, reed cage or crankcase modifications or swaps.
6. Piston modifications.
7. Balancing or lightening of rotating assembly.
8. Exhaust plate modifications or dry stacking.
9. No welding, grinding, fabrication, sanding, or polishing of any component unless specific class rules override.
10. Internally modified lower units.
F. Factory Modified Motors:
All Mercury/Mariner Performance Products engines and Mercury Racing engines, except the Pro-Max series, are automatically considered modified regardless of what modifications were or were not done after they left the factory.
G. NOTES:
1. Fiberglass is used in the generic sense to represent fiber glass reinforced plastic laminated construction. Boats reinforced with Kevlar7 or Carbon Fiber or other exotic materials are also included in this category. At the discretion of the Tech Inspector(s), hand made, custom designed and/or wooden boats will be allowed to race in any of the outboard classes except Factory Stock.
2. Centerline length does not include bolt on set backs or jack plates. The Tech Inspector(s) may allow boats under 16 feet to compete providing the owner/driver can demonstrate safe handling characteristics.
3. Modified OMC Cross Flow motors utilizing the factory original vertical reed crankcase and 8 port reed cages will run at the minimum weight shown in the PRO, MODIFIED and RIVER RACER weight tables. CCC or other horizontal crankcase cross flow motors will be penalized an additional 50 pounds.
4. Modified Mercury 2.0 or 2.4 motors that retain the original concept of exposed center transfer and finger ports will run at the minimum weight shown in the Modified Production and River Racer weight tables. Mercury 2.0 or 2.4 motors that use additional behind the liner transfers and/or boost tube transfers will be penalized an additional 50 pounds.
5. Fuel tests may be randomly conducted at any NEODA event. Fuel samples may be checked during tech inspection, after the final round of a class, or on a spot check basis as a determined by the Tech Inspector(s).
6. Weighing Rules:
1. All entries should weigh in before the race with COMPLETELY EMPTY fuel tank(s) (if possible).
2. All racers should provide their own lifting harness. The harness should be constructed to provide a three or four point attachment to the hull and terminate in a single, steel lifting ring or shackle. The ring or shackle shall be between six and seven feet off the ground when all slack is taken out of the "straps". The horizontal position of the ring shall be at the approximate balance point of the boat.
3. Adding ballast or weight to a boat is acceptable in order to meet a class minimum. Hull weight boxes will be permitted. The location of the weight boxes, in the hull is left up to the discretion of the racer; however, the location must allow easy inspection by the Tech Inspector(s). The preferred weights are sand bags or shot bags. Other weights will be acceptable providing they are judged to be safe (i.e. no sharp edges.). All weight must be added to the boat prior to going on the scales.
4. If a weight box is to be used, it should be fabricated from aluminum,
plywood or other suitable materials and have a tight fitting lid which when closed is approximately flush with the four (4) sides. The lid must close securely with either bolts or screws. If the box is made from wood, it must be sanded smooth and painted or resin coated to allow the Tech Inspector's seals to stick.
5. Unless authorized and supervised by a club official, any weight which is tampered with or removed before the completion of the event will cause immediate disqualification.
6. The following items will not be included in the total boat weight:
- anchors
- lines
- fuel
- paddles or boat hooks
- extra life jackets, cushions, etc.
- tools
- miscellaneous boating equipment not required to race
7. The following will be included in the total boat weight:
- driver with driving suit/uniform and footwear
- racing life jacket
- helmet, goggles and helmet restraint
- fire extinguisher
- prop and prop hardware
7. Weight Tables:
Use the WEIGHT TABLES by first looking up your actual “as-manufactured” (stock) motor cubic inches.
1. “MODIFIED MOTORS" are allowed 0.030 of an inch overbore without a weight penalty.
2. “MODIFIED MOTORS" will have an “Actual Baseline Displacement” (ABD) calculated by assuming a 0.030 of an inch overbore and a standard stroke.
3. “MODIFIED MOTORS" which have been enlarged by boring or stroking beyond the ABD, are then penalized 5 pounds per cubic inch, or part thereof, over the original ABD.
4. The following notes apply to Pro, Modified, and River Racer weight tables:
a. Modified OMC Cross Flow motors utilizing the factory original vertical reed crankcase and 8 port reed cages will run the weight as shown in the tables. Factory RS/CCC or other horizontal crankcase mods will be penalized an additional 50 lbs.
b. Modified Mercury 2.0 or 2.4 motors that retain the original concept of exposed center transfer and finger ports will run as shown in the tables. Mercury 2.0 or 2.4 motors that use “behind the liner” transfers and/or boost tube transfers will be penalized an additional 50 lbs.
5. SPORT RACER NOTES: There will be a base weight of 1650 lbs. for this class for stock motors. Additional weights will be added for ANY other modifications done to stock motors. The base weight table for stock Bridgeportmotors is 1750 lbs.
|
PRO WEIGHT TABLE
|
100-122 CI LOOPER
|
123-142 CI LOOPER (Note 4B)
|
149-161 CI XFLOW (Note 4A)
|
143-165 CI LOOPER
|
166-191 CI LOOPER
|
192-UP CI LOOPER
|
|
MODIFIED MOTOR WITH STOCK TYPE CARBURETION, FACTORY LOW PERFORMANCE EFI FUEL INJECTION OR FACTORY DFI FUEL INJECTION
|
1070
|
1120
|
1120
|
1250
|
1250
|
1350
|
|
MODIFIED MOTOR WITH RACE STYLE CARBS OR ANY HIGH PERFORMANCE FUEL INJECTION SYSTEM
|
1120
|
1170
|
1170
|
1300
|
1300
|
1400
|
|
MODIFIED PRODUCTION WEIGHT TABLE
|
100-122 CI LOOPER
|
123-142 CI LOOPER (Note 4B)
|
149-161 CI XFLOW (Note 4A)
|
143-165 CI LOOPER
|
166-191 CI LOOPER
|
192-UP CI LOOPER
|
|
MODIFIED MOTOR WITH STOCK TYPE CARBURETION, FACTORY LOW PERFORMANCE EFI FUEL INJECTION OR FACTORY DFI FUEL INJECTION
|
1250
|
1300
|
1300
|
1400
|
1400
|
1500
|
|
MODIFIED MOTOR WITH RACE STYLE CARBS OR HIGH PERFORMANCE CENTERHORN EFI with 3.625 IN.MAX DIA.
|
1300
|
1350
|
1350
|
1450
|
1450
|
1550
|
|
RIVER RACER WEIGHT TABLE
|
100-122 CI LOOPER
|
123-142 CI LOOPER (Note 4B)
|
149-161 CI XFLOW
(Note 4A)
|
143-165 CI LOOPER
|
166-191 CI LOOPER
|
192-UP CI LOOPER
|
|
MODIFIED MOTOR WITH STOCK TYPE CARBURETION, FACTORY LOW PERFORMANCE EFI FUEL INJECTION OR FACTORY DFI FUEL INJECTION
|
1420
|
1470
|
1470
|
1600
|
1600
|
1700
|
|
MODIFIED MOTOR WITH RACE STYLE CARBS OR HIGH PERFORMANCE 3.375 MAX. DIAMETER CENTER HORN EFI
|
1470
|
1520
|
1520
|
1650
|
1650
|
1750
|
|
STOCK WEIGHT TABLE
|
MERC 2.4L 200
|
MERC 2.4L 220 LASER
|
MERC 2.5L 200
|
MERC 200 PRO MAX
|
MERC 225 PRO MAX
|
OMC CROSS FLOW
|
|
CARB
|
1600
|
N/A
|
1650
|
N/A
|
N/A
|
1600
|
|
EFI
|
N/A
|
1625
|
1675
|
1675
|
1700
|
N/A
|
| SPORT RACER WEIGHT TABLE
|
BRIDGEPORT
|
w/33cc HEADS
|
w/26cc HEADS
|
w/INTAKE SPACER
|
w/HI-PERF CARBURATORS
|
W/PORTING
|
|
STOCK BASE WEIGHT 1650 LBS.
|
1750
|
ADD 50 LBS.
|
ADD 100 LBS.
|
ADD 25 LBS.
|
ADD 25 LBS.
|
ADD 100 LBS.
|
