[egh170]

Short Track Auto Racing Series hereafter known as STARS.
Official 2016 Engine Rules
Part XII – Engine Specifications
12.4. Division II Midget Engine Rules
A. Allowable Engines:
GM Ecotec 2.4L (LE5), or 2.2L (L61)
Honda 2.4 L (K24A1)
Chrysler World Engine 2.4L
Toyota 2.4L (2AZ-FE)
Ford/Mazda Duratec 2.3L (23 I-4/L3)
GM Quad 4 2.3L and 2.4L
Ford 2.0L Focus/Scream Pre-2004

B. Engines must remain in stock displacement. Allowances are for cleanup.
Maximum displacement for 2.4L Engines: 2.4387 Liters (148.82 CID)
Maximum displacement for 2.3L Engines: 2.2868 Liters (139.55 CID)
Maximum displacement for 2.2L Engines: 2.2237 Liters (135.70 CID)
Maximum displacement for 2.0L Engines: 2.053 Liters (125.28 CID)
1. Must use original manufacturers (OEM) engine block, OEM cylinder head, OEM crankshaft, OEM pistons, OEM camshafts, OEM Rocker Arms (rockers cannot have any alterations to any locking mechanism, they must remain stock), and OEM valves. The same combination that was standard out of the factory when new in the passenger vehicle must be used.
2. Absolutely no head swapping, Example: 2.4 LE5 must have a 2.4 LE5 head. Each part must be from the same exact type engine, and manufactured for that particular engine.
3. Connecting rods, and valve springs, valve spring retainers and keepers may be replaced with aftermarket products, however valves, valve springs, valve spring retainers, keepers, and connecting rods made of titanium are NOT allowed.
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4. Alterations to the OEM block and OEM cylinder head are limited to removing material for the express purpose of fitting the engine in the chassis only. Blocking and/or opening lubrication and coolant passages will be allowed. The crankshaft may be balanced, and oil passages may be chamfered. Lightening the crankshaft beyond minimal material removal for balancing is NOT permitted. Adding, removing, lightening, chamfering or “knife edging” crankshaft counterweights is strictly prohibited.
5. Aftermarket cam gears, sprockets, timing chains, timing belts may be used. All other STOCK OEM cylinder head components must be used. Welding on the cylinder head will NOT be permitted. Porting of the cylinder head including intake matching is NOT ALLOWED. Machining, grinding, sanding, or etching of the intake and/or exhaust ports is STRICTLY PROHIBITED. No altering of the shape and/or size of the intake or exhaust ports from OEM specs is allowed.
6. Fuel Injection: Constant Flow Mechanical or EFI with plenum or individual runner intake. Any programmable ignition/fuel injection systems are allowed, but must be readily available and have supported software. No carburetors.\
7. Oil System: Wet Sump or Dry Sump
VVT, VTEC, i-VCT, Etc.: Can be utilized (not allowed on motorcycle engines)
8 Engine Management Systems may use the following sensors: MAP (manifold absolute pressure), TPS (throttle position sensor), Crank, Cam, Water temp., Oil temp., Oil Pressure, Oxygen sensor, Fuel Pressure, IAC (idle air control, MAT (manifold air temp.), and EGT. The use of Wheel Speed Sensors with management systems is prohibited.
Traction Control is illegal.
9. Any timing curve is OK, may be switchable with the MSD 6214 Midget Ignition System.
Counter Balance Shafts can be deleted.
Any engine found to be outside of the prescribed rules in this section and sub sections, will result in disqualification from the entire event and a loss of all points for the car owner for the entire season. The car owner will also forfeit all monies earned for the event. A one year suspension, from the date of the infraction, of the car owner will be enforced and a $1,000 fine assessed. The car owner will not be permitted to enter a car until the fine is paid in full. The driver will forfeit all points and monies earned for the event only.
10. All engines must be normally aspirated, internal combustion, four cycles, reciprocating piston type, incorporating a maximum of four (4) cylinders in line. Engines must be production engines from a passenger car or motorcycle manufacturer and reasonably available in the United States. No engines may be used from motorcycles or passenger cars (automobiles) that have not been sold in the United States of America by an official authorized manufacturer dealership. No purpose built race engine blocks, race engine cylinder heads or race engine crankshafts are allowed. Complete engines and/or major components must be available in a reasonably sufficient supply to all competitors at competitive prices.
11. STARS reserves the right to disallow any component, engine and/or ignition system for competition which, in its sole judgment, does not meet the spirit and intent of competitive racing. Any engine not covered by the preceding specifications must be submitted for approval prior to entering competition.
12. The use of starters and de-clutching devices is optional on driveshaft driven cars but are mandatory on chain driven cars. When a declutching device is utilized by a driveshaft driven car, a neutral position in the final drive is required.
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C. Any engine that was legal prior to 2016 for STARS or Illini Racing Series Midget competition that exceeds 148.82 CID (2.4L) will be subject to restrictions and allowed to compete in the STARS D2 series. If it becomes apparent that this still provides a distinct advantage for these engines they will be restricted appropriately at the discretion of STARS.
STARS / IRS 2016 Engines & Restrictors

Engine Size and Make Type of Intake Restrictor size and type

2.4 Ecotec Stock D2 Throttle Body None
2.2 Ecotec Stock D2
2.4 Ecotec Stock D2 Individual Runner None
2.2 Ecotec Stock with 500 cams Throttle Body None
Full race national engine Individual Runner 1.0 inch Plate
Old national engine Individual Runner 1.0 Inch Tube
2.0 Ford Focus with 380 cams & Individual Runner None
13.5 pistons D2
2.0 and 2.4 Honda k stock Throttle Body 1.73 inch Tube
2.3 Race Tec Quad 4 D2 Throttle Body None
2.3 Ford Duratec To be determined if necessary
Definition of Restrictors:
There are two styles of restrictors, plate and tube. These are shown below. The restrictors must be sealed and secure, installed above/before the throttle plate, with no intake leaks below the restrictors. Both throttle body and individual runner type intakes must use the tube type restrictors as shown, unless noted as plate (national engines). Ram air scoops facing forward are not permitted. See engine chart for restrictor sizes.

"TUBE" style Restrictor
Restricted section to be at least 1 1/2 inches running length FC
- 1112 inch min.

"PLATE" style Restrictor

Any questions Contact me at 170egh@att.net or 815-741-8722
Everett Holt - Race Director STARS