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
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