RUNABOUT
CLASS ENGINE WEIGHTS
STOCK ENGINES
A Yamato 80/Yamato 102,202,302 w/20ssH restrictor
Sidewinder 15H 390lbs
B Yamato 102,202,302/Merc-Mariner 25XS 420lbs
D Merc 44 cu in/Tohatsu M50 D2 490lbs
NOVICE Yamato 80/OMC 15 with restrictor/Any 15hp-15 cu in
or less w/club foot-removal of tiller handle/addition of
steering bar acceptable/Kill switch-deadman throttle
required.
SUPER STOCK ENGINES
A Merc KG-4,MK15/Merc 20H/Hotrod A/Sidewinder 15H
w/any exhaust/Yamato 80 345lbs
B Merc 20H,25XS/Hot Rod B 365lbs
B OMC-Merc B1 engines 420lbs
C Yamato 202-302 any exhaust any gear ratio
Yamato 102 Mod,
Chrysler 302-304/24.1 cu in Yamaha 25 Mod
Merc 30 cu in-25XS-25 Mod 465lbs
D Merc 40 cu in,44XS/Yamaha 30(1yr probation 2004) 490lbs
E Merc 40cu in, 44 cu in/Tohatsu MK50 D2 490lbs
SE OMC 44-49 cu in./MercMK75,650/
Tohatsu MK50 D2/Yamaha 40
HYDROPLANE
STOCK ENGINES
A Yamato 80/Yamato 102,202,302 w/20ssH restrictor
Sidewinder 15H 380lbs
C stock Yamato 102,202,302 420lbs
D Merc 44 cu in./Tohatsu MK50 D2 440lbs
NOVICE Yamato 80/OMC 15w/ restrictor/
Any 15hp 15 cu in or less engine(see rule 12G)
Yamato 102,202,302 w/restrictor(see rule 12G)
APBA J class engines runnning APBA rules(see rule 12G)
SUPER STOCK ENGINES
A Merc KG-4,MK15.20H/Hot Rod A
Side winder 15Hw any exhaust/Yamato Mod 80 340lbs
B1 Merc 200,25SS/OMC 22 cu in/Yamato 80 365lbs
B Merc 20H,25XS/Hot Rod B 365lbs
C Merc 30 cu in/Yamato 202,302?Yamato 102 Mod
Merc-Yamaha 24.1 cu in(w/Yamato 202,302 rules)
OMC 31.5 cu in(w/ manufacture date 1976-1999) 435lbs
D Merc 40 cu in,44XS/Yamaha 30/Tohatsu MK50 D2 440lbs
E Merc 44 cu in 440lbs
SE OMC 44-49 cu in/Merc MK75,650/Yamaha 40
Tohatsu MK50 D2
25 Mod Yamato Mod 102,202,302/ Merc 25 Mod/
Yamaha 24.1 cu in 25 Mod 400lbs
Tech Committee has the right to equalize competition with one race notice of any combined class or classeswith multiple engines.
Rules and regulations for all classes and engines can be found in the OFFICAL NBRA RULE BOOK
