Whitewater Jetboat Racing

US Jet River Racer Series
2013 Race Class Rules
Unlimited Jet Class – 300 Series Numbers (U 300)
Hull any shape or material with a minimum length of 16 feet (4.88 m)
Unlimited engine restrictions or modifications, any exhaust c/w mufflers
Canadian new “A” 500+ engine is in this class
Propulsion – jet drive (Turbine engines, mufflers not required)
Roll Bar/Cage – well braced and mounted
“A” Local Class – 200 Series Numbers (A 200)
Hull any shape or material with a minimum length of 16 feet (4.88 m)
Engine displacement shall not exceed 470 Cubic inches (770cc)
BBFX engine legal as well as Canadian 454LSX engine
Older A and B engines in this class
Superchargers, blowers and turbos are allowed at 1.8 x cubic inch ratio
Engine shall use gasoline for fuel, any exhaust c/w with mufflers
Propulsion – jet drive
Roll Bar/Cage (well braced and mounted)
“CX” Jet Class – 100 to 200 Series Numbers (CX 100 – CX 200)
Hull any shape or material with a minimum length of 16 feet (4.88m)
Stock Crate Engine shall be GM(LS3 Engines 376 cu, in.) 480, 515 or CT525 or Ford (392 cu. In.) part # m-6007-d392rt(430) / c392rt (475)374w(540) Dodge(6.1 hemi) part # P5155067
Any cfm carburetor, or fuel injection engines with gasoline for fuel, normally aspirated only. Maximum 2” carb spacer, maximum 3 gaskets (0.60)
Stock crate intake manifold, no port matching on intake or heads, any valve covers
Any oil pan (no vacuum or dry sumps allowed), any ignition or distributor, any fluid damper
No overbore, porting, balancing or engine modifications allowed, factory heads only
Any exhaust c/w mufflers “SPORATIC TESTING”
Propulsion – jet drive
Roll Bar/Cage (well braced and mounted)





“FX” Jet Class – 01 to 99 Series numbers (FX 99) - - Crate Motor Class
Tunnel hull any shape or material with a minimum length of 16 feet (4.88m) or V bottom/ Step tech hull any shape or material with a minimum length of 13 ft. (3.96 m) No glass windshields
Engine – GM ZZ4 355 HP CRATE engine (GMPP long block part number 24502609)
Engine repairs must meet OEM specifications & weights, No roller rockers allowed and no porting, balancing, port matching or modifications; no overbore allowed; fluid dampers allowed
Any ignition system, Any oil pan (no dry or vacuum sumps) any valve covers, Stock GM intake manifold “SPORATIC TESTING”
Carburetor – 750 cfm maximum & 1” spacer thickness maximum 3 gaskets (0.60)
Exhaust - any exhaust system allowed c/w mufflers
Engine shall use gasoline for fuel
Propulsion – jet drive
Roll Bar/Cage (well braced and mounted)
“FXV” Local Jet Class – 01 to 99 Series Numbers (FX 99) – Crate Motor Class
V bottom or Step Tech hull any shape or material with a minimum length of 13 feet (3.96m) No glass windshields. Engines and all specifications the same as FX class
Sport jet engines will race in this class with the same hull restrictions