Updated 3/19/16
AGE - Age limit to compete in Mini Cup is 10. All minors must have written parental consent to compete.
WEIGHT - Suspended cars will be 680 lbs.
Rigid cars will be 640 lbs.
SHOCKS - Carrera shock # 3361 or #3364.
Afco shock #1553 or #1551
SPRINGS - Any 8 inch spring is allowed. Any weight of spring is allowed.
TIRES - ONLY Hoosier or American Racer mini cup tires is allowed. NO prepping tires.
WHEELS - Any 6 inch., 8 inch. Or 10 inch mini cup wheel is allowed.
FUEL - Any PUMP fuel or racing fuel is allowed. NO aviation fuel will be allowed.
NO methanol will be allowed. NO type of fuel additives will be allowed.
NO cooling of your fuel in the fuel cell or fuel lines will be allowed.
CLUTCH - Only a dry centrifugal clutch is allowed. NO transmissions, belt drives,
torque converters or belt drive torque converters, oil bath or axle clutches
allowed. ONLY #35 chain allowed. Live axle ONLY. NO ratchet or free
floating hubs allowed.
ENGINES - ONLY Honda GX390 13hp, GX340 11hp or the 13hp "Clone" allowed.
Home Depot has a 13hp "Clone" electric start engine for $329.00.
Engines will be used in competition. NO 420cc Harbor Freight engines
allowed. NO interchanging of parts from a 13hp to 11hp or vise versa
will be allowed. NO AFTER MARKET - STOCK APPEARING PARTS.
NO lightweight parts…piston, wrist pin, etc.
1 - Engines cannot be altered from stock Honda specs. Unless otherwise
noted in rules. NO lightweight parts unless otherwise specified.
2 - Zero (0) piston pop up is allowed. Bore may be clearanced.
Bore may be oversized by 10, 20 or 30 thousands. With a Honda 3P Carb
and spacer.
3 - Piston must not exceed above the top of the block. Top of piston crown
may be sanded to ensure "0" piston pop out. Dish in top of piston must
maintain a minimum of .80 (+\-) 5\1000 measured in the dish.
4 - Ring piston ONLY. No gapless rings allowed. Rings must be the same
thickness and width with no collapsing. Piston must have 3 rings.
5 - Rotating the piston or rod will not be allowed. Any replacement rod
bolt is allowed. Wrist pin OEM inside hole diameter -.600. Stroke must not
be altered - 2.530 is optimum.
6 - Piston and connecting rod must maintain standard stock size with NO
grinding or sizing modifications allowed. OEM ARC or Parsons connecting
OEM length allowed. Rod inserts allowed.
MECHANICAL & TECHNICAL RULES AND REGULATIONS
7 - Choke assembly may be removed from the carb. Any size jet is allowed.
No remote carb adjusters will be allowed from the inside of the car. Carb
spacer may be drilled for pulse pump fitting for fuel pumps. Stock
UNALTERED insulator blocks must run with stick gaskets. One per side,
UNALTERED and in tact. Maximum size bore of carb is .883 with NO
modifications being allowed. NO machining of carbs allowed. Choke may be
removed. NO modifications to carb except the jet size and choke removal.
ONLY restrictor plate .780 will be allowed.
CAMS - All pressed gears shall remain in stock position. OEM balances cannot
be removed. NO shims of any kind. EZ spin must be unaltered. NO
altercations to cam of any kind is allowed.
CRANKSHAFT - Must have stock stroke. Crankshaft may be turned or shortened to
accommodate various clutched. NO lightening, polishing or balancing of
crankshafts allowed. Crankshaft may be ground to .010 and the use of
a .010 replacement rod is permissible.
CYLINDER HEADS - Must remain stock. NO material can be added or taken out of port.
NO material can be added to anywhere of the cylinder head. Old or
warped heads may be machined to a minimum 3.730 thickness. NO porting,
polishing, sand, bead blasting or sizing of any part of the cylinder head will
be allowed. NO acid baths allowed. Three (3) angle valve seats are NOT
allowed. NO multi angle on valves (45 degrees ONLY) allowed. O-rings (one
per valve) are allowed as a safety procedure. Valves may NOT be grooved
to accommodate o-ring. All valves, lifters, push rods and rocker arms must
maintain OEM stock. Cylinder head must use stock valve springs ONLY. NO
aftermarket valve springs allowed. Stock valve spring are four (4) coils.
Stock or brass 32 lb. valve guide replacements are allowed in stock location.
HEAD GASKET - Must be OEM (fiber) with .040 as minimum. No metal head gaskets
will be allowed.
CAMSHAFT - Camshaft timing must be in place with notches in line. NO advancing or
retarding of cams allowed. Any camshaft will be allowed.
FLYWHEEL - Flywheel minimum weight is 11lb. and 10oz. Charging magnets on the
inside of flywheel may be removed. Stock timing key ONLY. NO offset keys
allowed. Flywheel OEM key modification will NOT be allowed. Balancing
of flywheel is allowed. NO machining of the inside of the flywheel will be
allowed. Outside magnets must remain stock and in the stock location.
NO exceptions. NO altercations to the key guide on the flywheel allowed.
GOVERNOR SYSTEM - Internal and external governor systems may be removed.
Hole must be sealed up or used to vent the block.
OIL - Oil brands are optional. NO flammables or explosives. NO additives. No
decking of the block.
EXHAUST - Must be a minimum of 28 inches long, but no more than 33 inches long,
from end to end. NO coating of header. NO staged headers. Header
wrap is allowed.
IGNITION - Altering the ignition timing from stock Honda specs is NOT allowed. NO
alterations to the starter coil, mounting bolts and holes or any other
electrical parts will be allowed. NO advancing or retarding of crankshaft
gears allowed. Stock Honda or "Clone" coils ONLY. NO alterations to the
coil allowed.
ENGINE PROTEST - Newport Speedway reserves the right to inspect any car at any time.
It is the drivers responsibility to have the car available for inspection by
the Race/Competition Director or any other staff member.
Protests must be made in writing within twenty (20) minutes of race
completion and turned in to the Race/Competition Director ONLY.
All protests are CASH ONLY. Protests must be filed
by either the driver or car owner ONLY. Protest fees must be turned in
at the time the protest was filed. Only second or third place finishers,
who are on the lead lap, may claim the winner. If you refuse to sell your
engine when you are claimed, you forfeit all monies and points for that
race event. Protest fee is $100.00 and motor fully torn down.
FRAME - Suspended cars must be suspended in all four (4) corners. Rigid cars must
rigid in all four (4) corners. NO type of air suspension is allowed. NO
half suspended\half rigid cars allowed. MMRA safety and car rules apply
mini cup division.
NO ANTIFREEZE! If your car is found to have antifreeze, you will be subject to a $100.00 FINE
AGE - Age limit to compete in Mini Cup is 10. All minors must have written parental consent to compete.
WEIGHT - Suspended cars will be 680 lbs.
Rigid cars will be 640 lbs.
SHOCKS - Carrera shock # 3361 or #3364.
Afco shock #1553 or #1551
SPRINGS - Any 8 inch spring is allowed. Any weight of spring is allowed.
TIRES - ONLY Hoosier or American Racer mini cup tires is allowed. NO prepping tires.
WHEELS - Any 6 inch., 8 inch. Or 10 inch mini cup wheel is allowed.
FUEL - Any PUMP fuel or racing fuel is allowed. NO aviation fuel will be allowed.
NO methanol will be allowed. NO type of fuel additives will be allowed.
NO cooling of your fuel in the fuel cell or fuel lines will be allowed.
CLUTCH - Only a dry centrifugal clutch is allowed. NO transmissions, belt drives,
torque converters or belt drive torque converters, oil bath or axle clutches
allowed. ONLY #35 chain allowed. Live axle ONLY. NO ratchet or free
floating hubs allowed.
ENGINES - ONLY Honda GX390 13hp, GX340 11hp or the 13hp "Clone" allowed.
Home Depot has a 13hp "Clone" electric start engine for $329.00.
Engines will be used in competition. NO 420cc Harbor Freight engines
allowed. NO interchanging of parts from a 13hp to 11hp or vise versa
will be allowed. NO AFTER MARKET - STOCK APPEARING PARTS.
NO lightweight parts…piston, wrist pin, etc.
1 - Engines cannot be altered from stock Honda specs. Unless otherwise
noted in rules. NO lightweight parts unless otherwise specified.
2 - Zero (0) piston pop up is allowed. Bore may be clearanced.
Bore may be oversized by 10, 20 or 30 thousands. With a Honda 3P Carb
and spacer.
3 - Piston must not exceed above the top of the block. Top of piston crown
may be sanded to ensure "0" piston pop out. Dish in top of piston must
maintain a minimum of .80 (+\-) 5\1000 measured in the dish.
4 - Ring piston ONLY. No gapless rings allowed. Rings must be the same
thickness and width with no collapsing. Piston must have 3 rings.
5 - Rotating the piston or rod will not be allowed. Any replacement rod
bolt is allowed. Wrist pin OEM inside hole diameter -.600. Stroke must not
be altered - 2.530 is optimum.
6 - Piston and connecting rod must maintain standard stock size with NO
grinding or sizing modifications allowed. OEM ARC or Parsons connecting
OEM length allowed. Rod inserts allowed.
MECHANICAL & TECHNICAL RULES AND REGULATIONS
7 - Choke assembly may be removed from the carb. Any size jet is allowed.
No remote carb adjusters will be allowed from the inside of the car. Carb
spacer may be drilled for pulse pump fitting for fuel pumps. Stock
UNALTERED insulator blocks must run with stick gaskets. One per side,
UNALTERED and in tact. Maximum size bore of carb is .883 with NO
modifications being allowed. NO machining of carbs allowed. Choke may be
removed. NO modifications to carb except the jet size and choke removal.
ONLY restrictor plate .780 will be allowed.
CAMS - All pressed gears shall remain in stock position. OEM balances cannot
be removed. NO shims of any kind. EZ spin must be unaltered. NO
altercations to cam of any kind is allowed.
CRANKSHAFT - Must have stock stroke. Crankshaft may be turned or shortened to
accommodate various clutched. NO lightening, polishing or balancing of
crankshafts allowed. Crankshaft may be ground to .010 and the use of
a .010 replacement rod is permissible.
CYLINDER HEADS - Must remain stock. NO material can be added or taken out of port.
NO material can be added to anywhere of the cylinder head. Old or
warped heads may be machined to a minimum 3.730 thickness. NO porting,
polishing, sand, bead blasting or sizing of any part of the cylinder head will
be allowed. NO acid baths allowed. Three (3) angle valve seats are NOT
allowed. NO multi angle on valves (45 degrees ONLY) allowed. O-rings (one
per valve) are allowed as a safety procedure. Valves may NOT be grooved
to accommodate o-ring. All valves, lifters, push rods and rocker arms must
maintain OEM stock. Cylinder head must use stock valve springs ONLY. NO
aftermarket valve springs allowed. Stock valve spring are four (4) coils.
Stock or brass 32 lb. valve guide replacements are allowed in stock location.
HEAD GASKET - Must be OEM (fiber) with .040 as minimum. No metal head gaskets
will be allowed.
CAMSHAFT - Camshaft timing must be in place with notches in line. NO advancing or
retarding of cams allowed. Any camshaft will be allowed.
FLYWHEEL - Flywheel minimum weight is 11lb. and 10oz. Charging magnets on the
inside of flywheel may be removed. Stock timing key ONLY. NO offset keys
allowed. Flywheel OEM key modification will NOT be allowed. Balancing
of flywheel is allowed. NO machining of the inside of the flywheel will be
allowed. Outside magnets must remain stock and in the stock location.
NO exceptions. NO altercations to the key guide on the flywheel allowed.
GOVERNOR SYSTEM - Internal and external governor systems may be removed.
Hole must be sealed up or used to vent the block.
OIL - Oil brands are optional. NO flammables or explosives. NO additives. No
decking of the block.
EXHAUST - Must be a minimum of 28 inches long, but no more than 33 inches long,
from end to end. NO coating of header. NO staged headers. Header
wrap is allowed.
IGNITION - Altering the ignition timing from stock Honda specs is NOT allowed. NO
alterations to the starter coil, mounting bolts and holes or any other
electrical parts will be allowed. NO advancing or retarding of crankshaft
gears allowed. Stock Honda or "Clone" coils ONLY. NO alterations to the
coil allowed.
ENGINE PROTEST - Newport Speedway reserves the right to inspect any car at any time.
It is the drivers responsibility to have the car available for inspection by
the Race/Competition Director or any other staff member.
Protests must be made in writing within twenty (20) minutes of race
completion and turned in to the Race/Competition Director ONLY.
All protests are CASH ONLY. Protests must be filed
by either the driver or car owner ONLY. Protest fees must be turned in
at the time the protest was filed. Only second or third place finishers,
who are on the lead lap, may claim the winner. If you refuse to sell your
engine when you are claimed, you forfeit all monies and points for that
race event. Protest fee is $100.00 and motor fully torn down.
FRAME - Suspended cars must be suspended in all four (4) corners. Rigid cars must
rigid in all four (4) corners. NO type of air suspension is allowed. NO
half suspended\half rigid cars allowed. MMRA safety and car rules apply
mini cup division.
NO ANTIFREEZE! If your car is found to have antifreeze, you will be subject to a $100.00 FINE