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T.Q. Midgets
Mini-Cup Division Rules 2010
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Western New York Mini Cup Rules and Information This section identifies all club rules/options that
may be different from the MMRA rules that follow. Adoption of rules and/or changes requires majority
vote of Mini-Cup members. WNY Mini Cup Club Rules allows the use of a "Stock
motor". Bottom line: If you need a new motor go with the MMRA
Sock. If you own an "alternative" you're legal for WNY club
events only until your motor expires, all motors will be
replaced with the MMRA Stock motor rules. Information:
Note:
Racing is a dangerous sport. The likelihood of
serious injury and possible death are greatened by competing
in speed type events. The MMRA assumes no responsibility for
injury or death resulting from, but not limited to, the
compliance of these rules or the engagement of competition in
a MMRA sanctioned event. No express or implied warranties of
safety or fitness for a particular purpose shall be intended
or result from publication or compliance with these rules. 1.0 TERMS OF THE BASIC COMPETITION RULES
“Basic Competition Rules” shall govern all vehicles
participating in sanctioned MMRA events. A competitor’s
ingenuity is encouraged. The rules set forth in the BCR set
limits on said ingenuity. These limits will be strictly
enforced. All parts of a vehicle mentioned or not, shall be
subject to the approval of the MMRA. Parts found to be unsafe,
even if specifically allowed in the BCR, shall be banned from
competition. This will include, but is not limited to, “stock”
parts on any and all manufacturer vehicles. No vehicle or part
shall be deemed legal by simply passing through inspection
unobserved.. 2.0 VEHICLE TECHNICAL SPECIFICATIONS
2.1 FUELS The sanctioning body reserves the right to require
competitors to adhere to these specifications by means of a
pump around system, spec fuels and/or any other test deemed
appropriate.
The director at his/her discretion may disqualify any
competitor based upon any traces of these additives whether
detected by a device or sense of smell. Competitors found to
be in violation of section 2.1 will be dealt with harshly. 2.2 OILS SPECIFICATIONS The use of combustible oils and/or additives is
strictly forbidden. The sanctioning body reserves the right to
require competitors adhere to these specifications by the use
of spec oils and any/or other test deemed appropriate. Oils
and/or additives found to be an irritant to other drivers and
or people will be banned. Competitors found to be in violation
of section 2.2 will be dealt with harshly. 2.3 WEIGHT SPECIFICATIONS All vehicles shall weigh the specified amount for the
class at post and pre race inspections. There shall be a
maximum of 55% left side weight.
2.4 BALLAST Ballast shall be added to all cars as required, to
meet minimum weight. Ballast shall be securely mounted within
the bodywork and serve no other purpose. Ballast shall be
mounted by means of grade 8 hardware, lock nuts and safety
wire or pins to a frame member. Ballast shall be solid with no
sharp edges. 2.5 NOISE REGULATIONS Local noise regulations may require the use of a
muffler, in which case the sanctioning body will mandate the
existence. Mufflers are a non-techable item except for the
following specifications: 1) Mufflers shall quiet the vehicle suitable for the
track’s requirements 2) Mufflers shall be securely mounted. 2.6 BATTERIES A type 10L battery (or similar), in good working
order, shall be mounted securely to the vehicle. Maximum
dimensions of the battery shall be: L 6.5 W 5.0 H 8.0. In the
event the battery is located in the driver’s compartment, it
shall be mounted within a non-conductive marine type container
or equivalent. All batteries shall be attached securely to the
frame or chassis structure independent of the marine type
container. Battery location is unrestricted. Battery,
mounting, wiring and/or charging post are subject to approval
by the sanctioning body. 2.7 FUEL CELLS
All fuel cells shall be securely mounted to the
frame. The location shall be within the structure of the
vehicle outside the driver’s compartment. It is recommended
the fuel cell be mounted inside a metal enclosure. The filling
neck of the fuel cell shall not be in the driver’s
compartment. Maximum capacity of the fuel cell shall be 3
(three) gallons. Filler caps, fuel pickup openings and lines,
breather vents, and fuel lines shall be so designed that if
the car is partially or totally inverted, fuel shall not
escape. Fuel cell breathers shall vent outside the vehicle and
away from the exhaust system Fuel lines shall not enter or run
through the driver’s compartment. 2.8 FIREWALL AND FLOOR A firewall constructed of aluminum and/or steel shall
completely separate the vehicle into two areas known as the
engine and driver compartments. The Floor of the vehicle shall
be constructed of steel only with a minimum thickness of .030. 2.9 FIRE SYSTEMS All vehicles are recommended to have a fire
extinguisher on board and securely fastened. 2.10 FLUID CATCH TANKS AND FILTERS AND BREATHERS
All orifices within the engine compartment shall vent
into a catch tank that is securely mounted within the engine
compartment (I.E.…Valve cover) 2.11 ELECTRICAL AND SWITCH SPECIFICATIONS All electrical wiring shall be neatly routed within
the chassis of the vehicle. No part of the harness may be
capable of “floating” within the driver compartment. Switches
shall be mounted to a dash or panel located in front of and
accessible by the driver. The ignition or master kill switch
shall be located on the left-hand side of the vehicle and
marked on/off. Accessibility to the ignition or kill switch
through the left side window is mandatory and shall be
unobstructed. 2.12 WINDOW SAFETY NETS
All vehicles are required to have a left side safety
net that is securely fastened to the chassis. The use of a
window net or side window is recommended on the right side. 2.12.1 WINDOW MATERIALS AND FASTENING
The windows shall be constructed of a clear
polycarbonate (i.e. Lexan) material with a minimum thickness
of .0625. Windows shall be securely fastened in place.
Plexiglas is not a polycarbonate material. There shall be no
holes in the front or rear windows. Front, rear, left rear
side and right rear side windows are mandatory. 2.13 DATA COLLECTION DEVICES If used, data collection devices shall fall within
these parameters. Device shall collect and/or remember only
these approved inputs:
All devices shall be securely mounted and shall not
obstruct the driver in any way. 2.14 DRIVER RESTRAINT SYSTEM
The use of a 5-point quick release style safety
harness is mandatory. The Safety harnesses shall have a SFI
rating of at least 16.1 and a minimum of 2 inches wide. The
safety harness shall be free of fretting and visible wear with
a manufactured date less than 5 years old. The Safety harness
shall be mounted securely to the chassis with grade 5 SAE
bolts. NO INERTIA WHEELS 2.15 BODY REQUIREMENTS The body is required to fit the chassis properly.
Handmade and /or home built bodies shall be subject to
approval of the sanctioning body. The sanctioning body
encourages the purchase of bodies of reliable and known
sources. 2.16 BODY CONSTRUCTION The body, which includes, trunk, hood and roof panel
shall be constructed of fiberglass and or plastic. If the body
is constructed of more than one material no visible difference
of the two shall be evident. If the body is constructed of
multiple pieces (i.e. clips, fenders etc.) the seams shall
have close fits and an appealing look. All bodies shall have
separate trunk, hood and roof panels. The roof panel shall be
hinged in the front. Body dimensions shall be:
2.17 BODY MOUNTING
The Body shall be mounted to the chassis by means of
screws or bolts, level to the chassis. The body shall be
mounted on center to the chassis. The only holes allowed in
the body shall be located on the front spoiler under the
bumper. A maximum of 2 holes, 3 inches by 6 inches or 4 holes
3 inches by 3 inches. A metal mesh screen mounted from inside
the body is required for any/all holes. 2.18 SPOILER REQUIREMENTS
Rear Spoilers shall not have the ability to be
adjustable from inside the driver’s compartment. Spoilers
shall meet a minimum width of 35 inches and a maximum of 36
inches. The height of the spoiler shall be a minimum of 2
inches and a maximum of 4 inches tall. Spoilers shall be run
between 39 and 50 degree to a level and horizontal plane.
Spoiler shall be constructed of a thick enough material as to
keep it from flexing while at speed. Spoiler angle will be
measured with driver in the car and as raced. 2.19 BUMPER SPECIFICATIONS
Bumpers are required on front and rear of the
vehicle. Bumpers shall not be visible or protrude outside the
body. 2.20 SEAT REQUIREMENTS
The seat shall be constructed of aluminum by a
reputable manufacturer of Automobile racing seats. Seat shall
be securely mounted on the centerline of the chassis. The only
materials allowed for the mounting of the seat shall be metal.
NO modifications with there intent deemed as lightening shall
be allowed. Seats and the mounting of them are subject to
sanctioning body approval. 2.21 STEERING SPECIFICATIONS The steering system shall consist of a steering wheel
suitable for automobile racing and mounted with a quick
release hub, and a rack and pinion style steering box. All
bolts used to mount any part of the steering systems shall be
grade 8 and use lock nuts and/or safety wire. 2.22 WHEEL SPECIFICATIONS Wheels shall be 8 inches max diameter and 8 inches
max width and constructed of aluminum and/or steel. Wheel rim
width shall be measured at the base of the rim seat. 2.23 TIRE SPECIFICATIONS American Racer Slicks - 15.0 X 7.00 X 8S are
mandatory. M32 compound only. Tire softeners are prohibited 2.24 BRAKING SYSTEM REQUIREMENTS
The braking system shall consist of one foot-operated
pedal, located on the left side of the car, which operates a
hydraulic style master cylinder. The braking system shall
break the entire rear axle, at a minimum. NO BAND STYLE BRAKES 2.25 THROTTLE LINKAGE SPECIFICATION
The throttle of the engine shall be controlled by one
foot-operated pedal located on the right of the vehicle.
Throttle return springs are mandatory. 2.26 DASH REQUIREMENTS The dash shall not hinder the driver from controlling
the car in any way. The dash shall not obstruct the driver’s
view in any way. 2.27 REAR AXLE REQUIREMENTS
The rear axle shall be made of steel at least 1 ¼
inches in diameter. The axle shall not protrude outside the
wheels. Both rear hubs shall be securely mounted to the axle.
The hubs shall never spin independent to the other wheel or
axle. Axles shall have a groove cut into the end. This groove
shall have an external lock ring installed. No limited slip
devices. 2.28 ENGINE LOCATION AND COOLING REQUIREMENTS The engine must be located in the rear of the
chassis. Engine cooling shall be limited to shrouds and ducts.
NO RADIATORS. The oil capacity shall remain unaltered from
stock specifications. 2.29 AIR DUCT SPECIFICATIONS NACA style ducts shall be located in the rear side
windows only except for one duct located in either (not both)
driver’s side window. The duct located in the driver’s side
window shall not close off more than 1/3 of the window opening
– this includes the mounting structure. Accessibility
requirements in section 2.11 are mandatory. NO FORCED AIR
INDUCTION. 2.30 MIRROR SPECIFICATIONS All vehicles are required to have mirror(s) that give
the driver a rear view of both sides of the car. Mirrors shall
not protrude outside a vertical line drawn from the ground up
tangent past the body. 2.31 CLUTCH SPECIFICATIONS Only dry centrifugal clutches utilizing a “bell” and
“shoe(s)” design are allowed. No Transmissions, belt driven
torque converters, oil bath or axle clutches. Manufacturer is
open. Number 35 chain drive only. 2.32 ENGINE STARTER SPECIFICATIONS All vehicles are required to run an on board engine
starter operated by a switch on the dash. The starter shall be
in good working order 2.33 GEARING SPECIFICATIONS
The sanctioning body reserves the right to specify a
“SPEC” gear ratio for special events or series. 2.34 CHASSIS RIDE HEIGHT
Minimum ride height shall be measured at the nose and
both sides of the chassis with driver sitting normally inside
the seat and vehicle above minimum weight. Minimum ride height
shall be one and one half inches “1 1/2” measured at the
lowest point of the chassis or body, not including welds or
fasteners for suspended vehicles. Ridged vehicles shall retain
a minimum ride height that allows for safe operation of the
vehicle. Excessive scrubbing of the chassis is prohibited and
is cause for a black flag to be issued or finish position to
be taken away. 2.35 SHOCKS AND SPRING SPECIFICATIONS Shock and springs may be of any manufacture. Springs
shall be 1 7/8 inches in diameter, rates are open. Shocks
shall not have remote reservoirs(s) and shall not be
adjustable from inside the driver’s compartment. 3.0 CHASSIS SPECIFICATIONS 3.1 CHASSIS MANUFACTURER 3.2 CHASSIS SPECIFICATIONS The overall length width and height of the chassis
shall fit within the dimensions set forth in section 2.16. The
suspension settings shall be run within the following
parameter at all sanctioned events:
The left and right wheelbase of the vehicle shall be
no greater than ½ inch different from each other. No portion
of the wheel or tire shall protrude outside the bodywork more
than the maximum of 1 inch. Offset chassis are prohibited on suspended chassis
construction. The use of offset chassis for ridged vehicles is
approved. 3.3 CHASSIS REPAIR Chassis repair and modifications shall stay within
the rules set forth by the BCR. It is highly recommended that
competitors have their chassis regularly inspected by a
professional for metal fatigue. No cracked or broken frames
shall run in any sanctioned events. 4.0 ENGINE 4.0 GENERAL ENGINE REQUIREMENTS 4.1 MMRA recommends the use of MMRA approved sealed
engines. MMRA approved sealed engines are not required but
will save you time and money by reducing tear downs at MMRA
Touring and Grand National events. The exclusive source for
MMRA sealed mini-cup engines is: MMRA Official Engine
Builder: 4.2 MMRA approved sealed engines have numbered seals
with the MMRA logo engraved on them. These are the only MMRA
approved seals in existence. All other engine seals are not
recognized by MMRA. See photo below: 4.3 Only Honda GX390K1 or U1 engines will be used in
MMRA mini-cup competition. Serial numbers cannot be removed
from engine block. 4.4 Engine must remain in stock location. Offsetting
of engine is expressly prohibited. 4.5 No interchanging of parts from different engine
models except that using U1 crankshaft and rods in a K1 motor
are allowed. This includes the GX390 QAE also. The new Honda
piston and rings introduced in 2009 may be used in older
engines as well. 14.6 Engines cannot be altered from stock factory
Honda specifications unless otherwise noted in this rulebook. 4.7 All parts must be factory Honda parts designed
for the GX390K1/U1and will be checked against factory Honda
parts unless otherwise noted in this rulebook. All official
decisions are final. 4.8 Specifications for the Honda GX390K1 engines can
be found on page 2-4 of the Honda Shop Manual, part number
61ZH910. DETAILED ENGINE REQUIREMENTS 4.7 Internal and external governor system may be
removed. Governor shaft hole may be plugged or vented. 4.8 Zero piston pop-up is allowed. Bore may be
clearanced, and may not exceed the maximum service limits.
Bore may be oversized by 10 thousandths (.010), 20 thousandths
(.020), or 30 thousandths (.030) with Honda replacement pistons only. Top
piston ring may be oversized. Stock or aftermarket ring
permitted. Top ring gap is a non-tech item. No gapless rings.
No tech on rings except for thickness and width. 4.9 Crankshaft may be shortened by a maximum of 1.250
inches at the clutch end. Clutch bolt hole may be retapped. No
lightening, polishing, or balancing of the crankshaft is
allowed. Crankshaft may be ground .010 and the use of a .010
Honda replacement rod is permissible. 4.10 Piston and connecting rod must remain stock
standard size, no grinding, polishing or sizing modifications
allowed, although modifying oil lubrication hole is allowed.
Also, top of piston crown may be machined to ensure 0 piston
pop out. Dish in top of piston must remain a minimum of .080 4.11 Rotating the piston or rod is expressly
forbidden. 4.12 Any replacement rod bolt is allowed, as long as
the rod is not altered or modified, except for oil lubrication
hole as specified in rule 14.10 above. 4.13 New 2008 design Honda piston and rings are legal
in all engines. The part numbers for the standard size pistons
are 13101-Z5T-000 and for the rings are 13010-Z5R-004.
Standard size as well as 10, 20, and 30 thousandths oversize
are legal. 4.14 CYLINDER HEAD 4.15 Cylinder head must remain stock. 4.16 Cylinder head may be machined to a minimum
thickness of 3.730 inches 4.17 No porting, polishing or sizing of any part of
the cylinder head is allowed. 4.18 Only stock valve grinding angles allowed. 30°
first & 45° second 4.19 All cylinder head dimensions will be taken from
stock Honda parts. 4.20 Worn valve guides may be replaced with stock
Honda valve guides or with a bronze guide-liner and must
remain in stock location. 4.21 CAMSHAFT NOTE: Super Mini Cup engines must compete using the
profiled camshaft as described below which has not changed in
9 years. This is the only camshaft profile allowed for 2010. 4.22 Camshaft timing cannot be changed from Honda
factory specifications. (See Honda Manual) 4.23 A reground Honda camshaft must be used meeting
the following profile and must be checked at the lifter
against the camshaft. Specifications are listed below. If a
cam does not meet the profile below and MMRA officials
determine that the only reason is excessive wear on a formerly
legal cam, the cam will pass tech for that race only and the
driver will be instructed to have a new cam installed for the
next event. INTAKE LIFT DEGREES POSITION
EXHAUST LIFT DEGREES POSITION
4.24 VALVE TRAIN 4.25 All valves, lifters, push rods and rocker arms
must remain stock Honda GX390K1/U1 engines. Aftermarket valve
springs okay if they meet the dimensions of the stock spring.
One stock Honda shim allowed under both intake and exhaust
springs. All dimensions will be taken from known stock Honda
GX390K1/U1 engine parts. All other specifications will be from
Honda GX390K1 shop manual. 4.26 A small groove may be cut in the valve stem for
a safety (rubber) "O" ring to be installed. Groove must be no
more than: 0.020" deep - 0.100" wide - 0.750" from end of
valve stem. 4.27 Slot in rocker arm may be elongated to prevent
binding. 4.28 A stock Honda valve seal may be used on intake
valve only. 5.0
CARBURETOR 5.1 Choke may be removed from carburetor. Shaft
holes must be plugged. 5.2 Must be the clone carburetor only 5.3 When using the Clone carburetor needle and seat must remain stock 5.4 Stock Clone throttle stop must remain stock,
unaltered – although aftermarket throttle Linkages may be
attached to the top for throttle actuation only. 5.5 The following modifications are the only allowed
changes to the stock Clone CARBURETOR Clone Only: Throttle Shaft and dimensions shown above.
NOTE: ONLY THE MODIFICATIONS MENTIONED ABOVE ARE
ALLOWED. ANY ATTEMPT TO CIRCUMVENT THE RULES WILL BE CAUSE FOR
DISQUALIFICATION AND/OR LOSS OF POINTS. 5.6
CARBURETOR GASOLINE FILTER 5.7 Gasoline filters may be used. The location and
size of the filter must be acceptable to official(s). 5.8
AIR FILTER AND ADAPTER 5.9 All engines are required to have an air filter
and carburetor adapter. 5.10 Air filter must be Velocity Airflow Products part
#VAP1016 or K & N part # RU2780 and must remain unaltered. 5.11 Air filter adapter must be Extreme Engine
Systems part #390919 or equivalent for Honda and part #3901919
or equivalent for Tillotson carbs and must remain unaltered. 5.12 Air filter cannot act as a ram air device. 5.13 ENGINE/CAR ELECTRICAL SYSTEM ALTERNATOR 5.14 Oil alert system may be removed. 5.15 Charging system may be removed. 5.16 Charging magnets may be removed. 5.17
FLYWHEEL 5.18 Flywheel may be balanced. Minimum flywheel
weight must be 11 lbs. 10 oz. Weight must be removed from the
outer edge of the flywheel. Any flywheel that shows signs of
machining on the inside area will be deemed illegal. The tech
official will have sole discretion and authority on this
matter. 5.19 No other alterations to the flywheel allowed. 5.20.
SPARK PLUG 5.21Any make or brand of spark plug may be used. Plug
must remain unaltered from factory but sealing ring may be
removed for head temperature sensor. 5.22 Aftermarket spark plug connectors may be used to
replace stock Honda connectors.. 6.0 DRIVER SAFETY EQUIPMENT REQUIREMENTS
6.1 SUIT Driver suits that effectively cover the body from the neck to the ankles and wrist, manufactured of fire resistant material are mandatory. All suits shall be manufactured of the following materials:o: NNOMEX, KYNOL, FPT, IWS, Fiberglass, Fire wear (tm),
DURETTE, FYPRO, PBI, KEVLAR or any suit carrying an SFI rating
of 3-2A/1. 6.2 HELMET Crash helmets approved by the Snell Foundation with a
Snell sticker 1990 or later Special Application (SA90) are
mandatory. Helmets involved in major 6.3 GLOVES Gloves made of leather and/or acceptable fire
resistant material containing no holes are mandatory. 6.4 SHOES Shoes, with uppers of leather and/or nonflammable
material that at a minimum cover the instep are mandatory. 6.5 ARM RESTRAINTS Driver Arm restraints are highly recommended. 6.6 NECK COLLAR Driver neck collars are highly recommended. © 2010 – Mini-Cup Division |
06/07/2010
Copyright © Micoli MotorSports. 2004 All Rights Reserved.