English Creek Speedway
2015 Rules and Regulations
390 Adult Clone Flat Karts - 390lbs
Any other organized class must be approved by the
Mailing Address MLC Motorsports 2005 North Lincoln
Knoxville, IA 50138
The rules and/or
regulations set forth herein are designed to provide for
the orderly conduct of racing events and to establish
minimum acceptable requirements for such events. These
rules shall govern the condition of all events, and by
participating in these events, all participants are
deemed to have complied with these rules. NO EXPRESS OR
INPLIED WARRENTY OF SAFETY SHALL RESULT FROM
PUBLICATIONS OF, OR COMPLAIANCE WITH THESE RULES AND/OR
REGULATIONS. They are intended as a guide for the
conduct of the sport and are in no way a guarantee
against injury or death of a participant, spectator or
The race director shall be
empowered to permit minor deviation from any of the
specifications herein or imposed and further
restrictions that, in his opinion, do not alter the
minimum acceptable requirements. NO EXPRESS OR IMPLIED
WARRANTY SPECIFICATIONS. Any interpretation or deviation
of these rules is left to the discretion of the
officials. Their decision is final.
Drivers and parents or
minor drivers are responsible to read and understand the
rules and regulations set forth in this book.
IF WE DON’T SAY YOU CAN-YOU
English Creek Speedway
Clone track rules
1. Drum Shoe clutch only
All pipes are no
tech no loop pipes allowed. All pipes must stay within
the rear axle and point down or must return in to tail.
All pipes must be approved by track promoter.
3. All pipes must use a
4. ECS will not have a claim
rule in any class.
Pulse-type fuel pump is not required.
YOU ARE RESPONSIBLE FOR THE
SAFETY OF YOU AND YOUR KART!
Frames must be of kart configuration. Not to exceed 90”
in overall length. No EXCEPTIONS. Kart not to exceed 350
lbs. including full tank of gas.
Must meet state noise levels.
Karts in Violation may not race until standards are met.
ALL KARTS MUST DISPLAY
6”BLACK NUMBER ON WHITE BACKGROUND ....Numbers that are not legible will not be scored.
Duplicate numbers must include a
letter. Must be a minimum of 6”.
Numbers must be
displayed on contrasting backgrounds.
and track officials’ decision is final.
All drivers under the age of 18 must provide a
notarized minor’s release form to the scorekeepers. A
new form is required for each season. In addition, when
parent or guardian is not in attendance, drivers must
provide us with a designated guardian form. A NEW FORM
IS REQUIED FOR EACH RACE.
7. Any other organized
class must have a minimum of 12 karts and be approved by
8. Should your car enter
the infield during a race you must slow down and come to
a stop at the edge of the track at that time a yellow
flag well come out.
All Clone class must run pump
gas only 87 Octane - no additives
All other classes - no tech on
B. Karts will be tested for fuel requirements.
Fines will be assessed for failure
to meet any one of the four tests in (b) above.
The following safety rules
have been imposed by 2013 safety Committee.
YOU ARE RESPONSIBLE FOR THE SAFETY OF YOU AND KART.
Brakes must be in good working condition at all times.
All karts must have seat belts and shoulder harnesses.
Shoulder harnesses must be mounted in a way to restrict
forward body motion independently of the seat. Lap belts
should be mounted on frame. Cut or frayed seat belts
will not be allowed. This entire rule will be strongly
Approved neck braces and arm restraints are mandatory.
Arm restraints must be attached to lap belt and worn
below the elbow.
Snell 2005 or SFI 24.1 approved with face shield only.
Must fit driver’s head.
Seat Securely mounted to the frame.
No excessive holes.
All drivers must maintain a working fire extinguisher in
their pit area.
All karts must have a 6” nylon tie attached to spark
Kill switches are recommended.
No sharp or
protruding objects on any part of the kart.
10. Fuel line
location cannot be closer than 2” to any of the exhaust
system at any time and shall not be above the exhaust.
If closer than 2”, fuel line must be insulated.
Fuel line must have ample slack for cage
movement. Must be petroleum grade fuel line.
11. Fuel tank
location: Out board mounted fuel tanks must have metal
protection, particularly grade fuel line.
12. No axle
protrusion beyond wheel rim. Max axle length 40”.
13. Smoking in pit
area is not recommended. Use common sense.
14. RED LIGHT: WHEN
THE RED FLAG COMES OUT, AND THE LIGHTS COME ON YOU MUST
COME TO A COMPLETE
AS SOON AS IT IS SAFE. You must not pass the accident.
If in the opinions of the officials you did not stop
when you should have you well be disqualified. Once the
officials say it safe the pit gate well open for one
pitman per kart if more then one person attends to a
kart that kart well be disqualified.
15. Pitmen are not
allowed on racetrack or infield while race is in
progress. Violators will result in their kart being
16. During a yellow
flag, WORK ON KARTS ON RACETRACK IS PROHIBITED.
17. SPEEDING IN THE
PIT AREA will result in a $50.00 fine and loss of
points. Officials and Safety Committee members are
authorized to issue fines.
18. Any Official is
permitted to remove karts from racetrack due to unsafe
conditions to driver and/or other karts.
19. Safety Committee
and Track Official’s decision is final.
20. Chain guards are
mandatory. Appropriate design to prevent injury to arm.
If in doubt, see safety tech.
21. Karts will be
inspected using the following safety list.
IMMEDIATE- must be fixed same day.
SECONDARY-must be fixed by the following race date
or pay $25.00 fine. Failure to fix by third face will
result in suspension of kart.
Seat belt & harness mounted
Steering link, lock nuts or cotter keys
Fuel Line Location
Spindles- Cotter Keyed
Floor Pan Condition
Seat – Condition/Mounting
Rear Axle Keepers
Any Official has the
authority to disqualify a kart for safety violations.
control devices allowed.
RACING RULES & ETIQUETTE
GREEN FLAG: The entire track is open for racing. Passing
will not be permitted before the green flag is
displayed, at designated point. Single file starts will
be at MEDIUM SPEED, until the lead kart begins to race.
At this point the green flag will be displayed and
racing will begin.
Double file starts. The two lead karts must stay side by
side, at MEDIUM SPEED, until reaching the start cone.
After two attempts if we do not get a side by side start
the front row will move to the last row.
RED/YELLOW FLAG: Restart race. This will happen
on the first lap only. All races will be entitled to two
YELLOW FLAG: CAUTION, All karts must come to a
parade lap speed. Failure to do so will result in being
sent to the back. Karts must be in single file formation
(nose to tail). Line up reverts back to previous lap for
STOP AS SOON AS SAFELY POSSIBLE.
Revert back to previous lap for line up.
Once the pit gate is open only one pitman per kart is
OBSERVE THE RED FLAR WILL RESULT IN DISQUALIFICATION.
BLUE/YELLOW FLAR: MOVER OVER. To inform slower
moving karts that leaders are about to pass. Move over
BLACK FLAG: PROCEED TO THE INFIELD for
consultation. Kart will cease being scored from time
flag is displayed.
WHITE FLAG: ONE LAP TO FINNISH.
8. CHECKERED FLAG: Race is
officially over. All karts must pass under this flag to
If a kart has a safety problem on the racetrack
and an Official can easily fix it, kart will resume
Jump starts will result in a loss of two
positions. This will be imposed at next yellow or at the
end of the race.
11. Drivers who are
involved in or the cause of a yellow or red flag will
start in the back of the pack. The TWO SPIN rule is in
effect. Should you be involved, cause or have to be
restarted at any time you will be charged with one spin.
NO REFUNDS issued once kart reaches track.
At no time will a driver or a kart representative
may enter the scorers booth without permission of the
head scorer. Should you enter the scorer booth with out
permission you kart or the kart you are representing may
RESULT IN DISQUALIFICATION.
14. Quads are to be used
for pushing karts only.
15. Quad operators must be
a minimum of 15 years old.
Alcohol beverages are not allowed in the pit area.
Anyone observed drinking any type of alcohol during the
race program will be disqualified.
You are responsible for your pit crew members. If a
member of your pit crew is observed drinking alcohol you
will be disqualified.
Any person found using or under the influence of drugs
will be disqualified
plus banned from the racing facility indefinitely.
Fighting on premises will result in permanent
suspension. Drivers are responsible for the action of
their pit crew.
ANY display of unsportsmanlike conduct (on or off the
track) will result in a FINE, SUSPENSION, IMMEDIATE
REMOVAL FROM RACE AREA, POINT PENALTIES, and OR ALL OF
Rough driving will result in docked position, fine or
Pit crew members observed verbally or physically abusing
driver will result in loss of accrued points for their
driver and/or fine. NO EXCRPIONS!
Any person entering an other persons pit in an adverse
manner will result in the kart that are associated with
being disqualified and possible fines and suspension
We have the right to refuse service to anyone
Point system will be disclosed at the first race. Copies
available at sign-in booth, upon request.
Drivers must have a valid Competitor’s License to race
and/or be eligible for points
Drivers may time in only ONE kart number in their class
and run that number kart for the entire event.
To be eligible for points and awards, licensed drivers
must not miss more than four point races, per series.
Borrowing a kart is permitted. Kart must display
DRIVER’S registered number. SCOREKEEPERS MUST BE
NOTIFIED of any changes.
No borrowing allowed after the green flag has been
Substitute drivers are permitted for only two scheduled
Points and winnings are awarded to registered kart
You must be present at awards banquet to receive awards
and/or prize money.
all classes except the open Class are trophy classes.
ALL Adult 390 Clone Flat
changes are simple:
Bolts on side covers for all 390 clone classes are
Triple angled is now legal but must stay in stock
run any tires
Tire doping of any kind is not allowed.
must be at least 14 years old
NOTARIZED MINOR RELEASE IS MANDATORY. A new release for every
In addition, when parent or guardian is
not present at race event, a DESIGNATED GUARDIAN form is
mandatory. One for each race.
Minor must be
accompanied by an adult at all times while in the pit
area. Parent/Guardian is responsible for the actions of
their minor child. Bike riding and playing in the pit
area is prohibited.
Any parent/guardian or pit crew
member observed verbally or physically abusing other
drivers will result in a fine and/or loss of points for
their driver. NO EXCEPTIONS!
BP (Builder Prepared) 6.5 OHV
– Fuel Pump Gas ONLY –Pulse-type
fuel pump is not required. Approved
Engine: 6.5 OHV 196cc clone engine modified only
according to BP OHV Engine Spec. Tires are track/series
ENGINE SPEC SHEET FOR BP 6.5 OHV CLASS
Description: Single cylinder, 2-valve overhead
4-cycle engine. No aftermarket coatings of any type are
permitted on any part of the engine (exception Blower
Housing and Shrouds).
Requirements: Stock cylinder head only. Machining of
gasket surface is allowed. No addition of material in
ports or to cylinder head allowed. Porting and / or
grinding are not permitted. Valve seats may have two
angles, 45° valve face and 30° top relief. Inside
diameter of valve seats must be stock(Into .897” max ID
and Ex .862” max ID). Valve seats must appear stock and
must be in stock position and depth. Stock head bolts
are required and all four are required.
Head gasket/s maybe
after market, must be of stock configuration, and gasket
thickness non-tech. Depth check between the valves,
front to back and side to side may not vary by more than
.005” max. Cylinder head guide plate for pushrods
must remain stock. No other alterations to the stock
head are permitted.
Bore and Stroke:
Stock bore is 2.685” and may be over bored to 2.718”
Stroke is 2.123” +/- .005”.
Connecting Rod: Stock or Billet aluminum rods, with or
without bearing inserts allowed. No titanium rods
allowed. Rod length is a non tech item.
Combustion Chamber Volume: 25 cubic
centimeter minimum, with piston at TDC, using prescribed
procedure. The Liquid CC check is the official check (IF
THE ENGINE FAILS THE CC LIQUID CHECK AT ANY TIME DURING
THE TECH PROCEDURE IT MUST BE CALLED ILLEGAL).
Carburetor/Intake Requirements: Stock Huayi or
Venturi .625” NO-GO. Rear carb bore .751” NO-GO. Carb bore finish,
non tech. Throttle shaft - .115” minimum. Butterfly -
.037” minimum. Air Filter adapter of 1.375” max length allowed. No air rams.
Pulse-type fuel pump is mandatory. Fuel pump must be
pulsed from either the crankcase or the valve cover.
Black phenolic carb insulator must be used. Choke
assembly may be removed. Jets, air bleeds jets, and
emulsion tubes are non-tech. Throttle shaft, washer, and butterfly
must be stock and must be present, butterfly screw non
tech. Stock intake runner gasket configuration only. One extra gasket
may be used with restrictor plates. No other alterations
Ignition timing is non tech. Stock ignition module only.
No modifications of any type allowed. Sparkplug
connector must be stock as from factory.
Piston Requirements: Must be stock dished piston
with no modifications. Oversize Clone or Honda ZOT
dished piston is allowed up to .035" oversize. Rings
must appear stock and all rings must be installed.
Piston may not pop out above cylinder deck.
Valve Train: Stock valve-train only in stock
configuration except: Any single valve springs and
valve spring shims are allowed; Any 5.5mm stem steel
valve (including stainless) that uses stock
retainers allowed. Intake valve head Max OD .982”
+/- .005” and Exhaust valve head Max OD .945” +/-
.005”. Valves must be one angle only, 45°. No knife
edging of valves (1mm min. margin). Valve length is
non-tech. No additional support for rocker studs
Champion rocker arm assembly and valve cover allowed
Camshaft Requirements: Stock
camshaft cores only, ez-spin assy must remain as stock.
Duration check for
Intake and Exhaust lobes (taken off pushrod) . Intake
duration of 248 degrees at .050 lift/107 degrees at .200
lift. Exhaust duration of 247 degrees at .050 lift/116
degrees at .200 lift. Max lift at the valve retainers,
Intake .238” and exhaust .242” taken on valve spring
retainer with zero lash. (To achieve zero valve lash for
checking running lift, preload dial indicator by .001”.)
Crankshaft Requirements: Stock, factory crankshaft
only with stock, factory timing gear in factory
location. No modifications to crankshaft allowed.
Aftermarket steel main bearings of non self-aligning
type, with or without seal are allowed. No ceramic
bearings. Crankshaft Journal diameter is 1.180”, 1.168”
Block Requirements: Stock Block,
as cast and produced with no alterations or
modifications other than those specifically permitted.
Block head matting surface may be machined, however, no
piston pop out is allowed. Blocks may NOT be welded for
repairs. No addition of material to block (i.e. welding,
jb weld, etc). All bolt bosses in block may be drilled
and tapped for repairs or other uses. Additional side
cover gaskets as required for crankshaft thrust are
permitted. All parts associated with the governor and
the low oil sensor may be removed, plugging any
Flywheel: Approved SFI
certified billet aluminum flywheel only. No machining or
alteration of any kind allowed. Minimum weight for
flywheel is 3.3 lbs. Any timing key or no key at all may
be used. A flat washer or spacer may be used, and is
recommended, between the flywheel and the nut. Handheld
electric starter may be used, but compression release
mechanism must remain on camshaft.
Current Approved flywheels: ARC 6619, ARC 6618, Raceseng Flywheels
RSP-13-075 Rewheel NF- S1 & RSP-13-077 Rewheel F-S1.
Header and Muffler Requirements: Header Pipe Length:
Minimum 18”- Maximum 22”.
All pipes must use a B91XL Muffler (Round holes
unaltered) a small hole in the end (bottom) allowed for
safety wire. Safety wire must be present. Header must be securely
wrapped from flange to muffler prior to the race.
Exhaust Pipe must be double nutted or safety wired and silencer must
be supported by clamped on brace to secure it in place.
+/- .005 or 2 degrees on all measurements to allow for
gauge variances and wear.
classes must run pump gas(87 octane)
Approved billet flywheels are mandatory in all clone
A billet rod is mandatory in all classes using builder