NATIONAL HOMOLOGATION FORM ENGINE

Transcription

1 NATIONAL HOMOLOGATION FORM ENGINE Manufacturer VORTEX Make MINI ROK Model 60CC Validity of the homologation 6 years Number of pages 40 This Homologation Form reproduces descriptions, illustrations and dimensions of the engine at the time that Karting Australia conducted the homologation. The height of the complete engine on all photographs must be as a minimum 7 cm. PHOTO OF DRIVE SIDE OF ENGINE PHOTO OF OPPOSITE SIDE OF ENGINE Signature and stamp of Karting Australia Les Allen National Technical Commissioner Amended: 29 May 2015 (Original Homologation December 2014) Updates marked in RED

2 PHOTO OF DRIVE SIDE OF THE COMPLETE ENGINE Homologat on

3 PHOTO OF OPPOSITE DRIVE SIDE OF THE COMPLETE ENGINE Homologat on

4 PHOTO OF THE REAR OF THE COMPLETE ENGINE Homologat on

5 H N C M N N Homologat on

6 PHOTO OF THE COMPLETE ENGINE TAKEN FROM ABOVE Homologat on

7 PHOTO OF THE COMPLETE ENGINE TAKEN FROM BELOW Homologat on

8 UNIQUE AU SERIAL NUMBER SAMPLE FOR COMPLIANCE WITH KA HOMOLOGATION Homologat on No deviation from the manufacturer s Australian "AU" spec engine is allowed. Allcomponents must remain OEM and therefore only engines stamped with the "AU" as the second and third identifier in the engine serial number for example 4AU0001 will comply with Australian Homologation. Attention : ALL THE ENGINE PARTS MUST BE ORIGINAL BY VORTEX ROK. Neither engines nor accessories can be modified. By this we mean any shape, content or function changes which may differ from what previously conceived. Furthermore this includes any addition and /or removal of material and /or parts from the engine set-up package unless provided by this regulation. No ceramic bearings or component coatings.

9 TECHNICAL INFORMATION A CHARACTERISTICS The number of decimal places must be 2 or comply with the relevant tolerance. Max displacement Max allowed bore Cylinder 60 cc mm Tolerances & remarks Stroke mm Admission system in the cylinder Cooling system Carburettor: Piston Port Air cooling CARBURETTOR DELL ORTO PHBG 18 BS Number of transfers 2 Shape of exhaust transfer At 4 angles Cylinder head Volume with Vortex CC check tool WA cc Minimum Crankshaft Number of bearings 2 -- Diameter of bearings 47mm 0.05mm Weight of crankshaft with Conrod 1311g 10.0g Crankpin (Big End) Diameter 18mm 0.05mm Length 40.6mm 0.05mm I.D. 6mm 0.05mm Weight of crankpin 71g 1.0g Connecting rod Connecting rod centreline 90mm 0.20mm Diameter of big end 24.02mm 0.05mm Diameter of small end 16mm 0.05mm Weight of the connecting rod 94g 10.0g

10 Piston Number of piston rings 1 Weight of the piston 63g 5.0g Squish minimum measurement (use 2.0 mm solder) 0.8mm Minimum Gudgeon pin Diameter 12mm 0.01mm Length 34mm -0.20mm Minimum weight 15g Minimum I.D. 8mm 0.10mm Clutch Minimum weight 815g 15.0g Engine Sprockets Option Only Z10-Z11 B OPENING ANGLES Of the inlet Of the transfer ports Of the exhaust C Cylinder head Cylinder Cylinder wall Sump Crankshaft Connecting rod Piston MATERIAL AL-SI AL-SI/ CI CI AL/SI ACIER NI-CR-MO ACIER NI-CR-MO AL/SI No deviation from the manufacturer s Australian "AU" spec engine is allowed. All components must remain OEM and therefore only engines stamped with the "AU" as the second and third identifier in the engine number for example 4AU0001 will comply with Australian Homologation. Opening Angles adjustable via base gasket thickness only. Attention: ALL THE ENGINE PARTS MUST BE ORIGINAL BY VORTEX ROK. Neither engines nor accessories can be modified. By this we mean any shape, content or function changes which may differ from what previously conceived. Furthermore this includes any addition and /or removal of material and /or parts from the engine set-up package unless provided by this regulation.

11 D PHOTOS, DRAWINGS & GRAPHS D.1 CYLINDER UNIT MINIMUM DISTANCE OF THE CARBURETTOR SUPPORTING PLATE FROM THE CYLINDER AXLE DRAWING OF THE CYLINDER DEVELOPMENT

12 ... Section D.1 Indicate on the drawing: A1/A2 = maximum inlet width measured at the chord. E1/E2 = minimum thickness of the exhaust rib (if existing). C1/C2/C = maximum exhaust width measured at the chord. DRAWING OF THE CYLINDER BASE with dimensions PHOTO OF THE CYLINDER BASE

13 ... Section D.1 DRAWING OF THE CYLINDER HEAD AND OF THE COMBUSTION CHAMBER with dimensions PHOTO OF THE CYLINDER HEAD PHOTO OF THE COMBUSTION CHAMBER IN THE CYLINDER HEAD

14 ... Section D.1 PROCEDURE USED TO MEASURE the Transfer and Exhaust Port Durations A. The measuring will be done with a gauge as per the drawing under Opening Angles in this document B. When placing the gauge into the port the gauge is not to be bent and must be held as per photograph C. It must be inserted at 45 degrees on the wall, you should be able to move it forward and backward during this operation, it must not give the sensation that it is somehow blocked. Once the piston has made contact, no pressure must be applied to the crankshaft to block the forward and backward movement of the gauge. The feeling should be the same as when setting a tappet on a four stroke engine. Not on any account the wedge to be placed in a horizontal or vertical position. D. With the inlet manifold fitted to the engine, check the inlet port opening angle from the outside of the cylinder only. PHOTO OF THE CYLINDER FROM ABOVE CYLINDER HEIGHT

15 ... Section D.1 OPENING ANGLES measured with a thickness gauge of 0,20 mm having width of 5 mm and a degree wheel with 200 mm minimum diameter, or with a digital rotary degree finder device. The exhaust angular reading must be measured with a 0,20 mm thick and 5mm wide wedge. (VORTEX Tool WD016) (see drawing beside). PROCEDURE USED TO MEASURE THE VOLUME OF THE COMBUSTION CHAMBER Disassemble the engine from the chassis Wait until the temperature is ambient temperature Verify Squish Minimum measurement (0.8mm) using 2.0 mm solder. 2- Disassemble the cylinder head in order to verify the projection of the spark plug inside the combustion chamber Remove the spark plug (verify the height of 18.5mm with washer, 19mm without for temp sensor) Also checking chamber shape with Vortex template Tool (WA063) Screw the Vortex tool (WA050) at the place of the spark plug (The tool fitted on the cylinder head must not overpass the superior part of the combustion chamber. It has to be fixed onthe cylinder head in the same way the spark plug of 18,5mm was fixed) Make it air tight and water tight with grease the upper part of the piston and the cylinder wall Raise up the piston and stop the crankshaft, locking at Top Dead Centre Dry up the excess of grease, Be sure that the engine is on a flat surface Refit the cylinder head and torque head nuts in X pattern to (16-18 Nm). Fill up the combustion chamber (with a mixture composed by 50% of ATF oil used to makethe mixture and the 50% of the Deisel fuel) using a graduated burette (25cc or 50cc class A or B ) (mechanical or electrical) until the upper border of the insert tool. The measured volume must show a value which is complying with the minimum combustion chamber volume of 6.8cc as per the engine Technical Information herein.

16 ... Section D.1 H U MU R ND M N LD Cadet 9 (Restricted) FRONT VIEW DRAWING with dimensions Cadet 12- KA12 (Open) EXHAUST GASKET 1,5 +/- 0,5 EXHAUST GASKET 1,5 +/- 0,5 Attention : ALL THE ENGINE PARTS MUST BE ORIGINAL BY VORTEX ROK. Neither engines nor accessories can be modified. By this we mean any shape, content or function changes which may differ from what previously conceived. Furthermore this includes any addition and /or removal of material and /or parts from the engine set-up package unless provided by this regulation.

17 D.2 CRANKCASE EXPLODED DRAWING OF THE CRANKCASES UNIT Attention: ALL THE ENGINE PARTS MUST BE ORIGINAL BY VORTEX ROK. Neither engines nor accessories can be modified. By this we mean any shape, content or function changes which may differ from what previously conceived. Furthermore this includes any addition and /or removal of material and /or parts from the engine set-up package unless provided by this regulation.

18 PHOTO OF THE CRANKSHAFT PHOTO OF THE CONROD RIGHT SIDE LEFT SIDE DRAWING OF THE CRANKSHAFT (MAIN DIMENSIONS incl. tolerances) CRANKSHAFT WEIGHT WITH CONROD 1311 gr.± 10gr

19 ..Section D.2 CRANKSHAFT FLYWHEEL BALANCE HOLE DIAMENSIONS

20 BIG END CRANK PIN DIMENSIONS PISTON PIN DIMENSIONS WEIGHT OF CRANKSHAFT CRANKPIN 71gr. +/- 1gr PISTON PIN WEIGHT 15 gr Min PISTON DIMENSIONS Mandatory to have the brand VORTEX cast piston as shown in the picture WEIGHT OF PISTON 63 gr +/- 5 gr

21 D.3 COMPLETE CLUTCH ROTOR WITH STARTING GEAR WEIGHT OF COMPL. CLUTCH ROTOR WITH STARTING GEAR: 815g +/- 15g ENGAGEMENT SPEED (MAXIMUM) CAN BE VERIFIED IN EVERY MOMENT OF THE EVENT 4000 RPM WEIGHT OF CLUTCH ROTOR 345g +/- 15g WEIGHT OF CLUTCH HOUSING 178g +/-10g INSIDE DIAMENSION OF CLUTCH HOUSING 84.5mm+/- 0.1 mm TOTAL WEIGHT OF CLUTCH ROTOR AND HOUSING 512g - 15g

22 ...Section D.3 PHOTO OF SELETTRA IGNITION Cod. PVL Part W420/2 NOTE THAT THE ONLY SPARK PLUG CAP PERMITTED IS AS PER ABOVE SPARK PLUG: Spark plug must be standard and have the original washer fitted when no head temperature sensor is in use. Shank length with washer18.5mm maximum. No machining permitted. Vortex OEM wiring loom, connectors and start/stop buttons must be used. No wiring loom repairs are permitted, except: The HT lead may be shorted as a repair. HT lead must not have a join. The loom wire connectors to the coil may be replaced/repaired with like for like components. Stator mounting ring must be Vortex OEM. All mounting bolts must be in original condition. Selettra Coil Part W410/MR. The Coil must be mounted on the Vortex OEM mounting bracket.

23 VORTEX MINI ROK IGNITION TIMING Ignition Timing Remove spark plug. Insert dial gauge into spark plug thread and screw in tightly. Rotate engine past TDC and set gauge to read 0 at TDC. Slowly rotate engine until the dial gauge reads 3mm +/- 0.1mm. Using a straight edge check that the timing marks line up correctly. WIRING LOOM

24 ... Section D.4 BATTERY CRADLE BATTERY Battery can be either the factory supplied lead acid type, or an alternative lightweight Lithium Ion Battery. It must be mounted within the Vortex OEM battery cradle, on the left side of the chassis, within easy reach of the driver. (Sart/stop buttons bracket end facing towards front of kart). Extra padding material is permitted. Additional holes are permitted in the base of the battery cradle to enable a second chassis mount to be fitted. Engines shall be mandatory swiched on and off by means of onboard starting system. Technical Inspectors may check the on-off onboard system anytime.

25 D.5 EXHAUST SYSTEM (Exploded view) DIAMENSIONS OF THE EXHAUST MANIFOLD (RESTRICTED TYPE) Cadet 9 DIAMENSIONS OF THE EXHAUST MANIFOLD (OPEN TYPE)

26 ... Section D.5 TECHNICAL DESCRIPTIONS OF THE EXHAUST Weight in grams 1372 g +/- 5% TECHNICAL DRAWING It must include all the information necessary to build this exhaust.

27 PHBG 18BS CARBURETOR SPECIFICATIONS: Note: Please note that there have been NO changes to the carburetor specifications. This document is used to clarify the standard homologated carburetor and jets. No machining or drilling of jets is allowed on the carburetor and its internal parts. The carburetor must remain standard as supplied by the Vortex Mini Rok Importer. The importer also has the right to supply competitors with new jets should it be required. This is a working document and will be updated as and when required. The responsibility is on the competitor to check that the carburettor meets the required specification. Carburetor Specifications for all Karting Australia 60cc Mini Rok classes for CARBURETTOR DELL ORTO PHBG 18 BS 1. Throttle Valve Slide = Mixture Needle = W23 3. Atomiser/ Emulsion Tube (Mini Rok) = 266 AN 4. Insert 5. Idle Diffuser = Starter Jet = Main Jet = Needle Valve Diameter 9. Float = 4g 10. Air Screw 11. Surge Plate = Compulsory A. Other Dimensions B. Other Dimensions Measuring of components: Some components will be measured with aid of a vernier. Measurement of Diameters applicable to the entire document: Diameters of jets / holes will be measured using GO / NO GO gauges. Special Tools / Drill bits will be used to measure some holes and used as GO / NO GO gauges. These gauges can be verified with use of a 0-25mm micrometer. GO Gauge will be required to slide into the required hole. NO GO Gauges must not be able to slide into the requiredhole. Should a part be found to be out of spec, it will be impounded for further measurement if required. Carburetor: Dell Orto PHBG 18mm Slide: #4.0 Needle: W23 Starter Jet: #60 Inner pilot: #50 Emulsion tube: 266AN Floats: 4gm Maximum venturi size (go/no go): 18mm +/-0.05mm The ONLY allowed changes to the carburetor are Main Jet changes in size range and Needle Clip Position. Air screw adjustment. Any other change or modification is not permitted.

28 CARBURETTOR DELL ORTO PHBG 18 BS AND COMPONENTS LIST COMPONENTS 1- GAS VALVE 40X64 (4.0) 2- CONICAL NEEDLE W23 3- SPRAY NOZZLE AN JET MAIN. Range JET PILOT STARTING JET FLOAT 4 gr. 8- TUBE 90 KIT 9- CHAMBER MIXTURE COVER KIT 10- CHAMBER MIXTURE COVER GASKET 11- GAS VALVE SPRING 12- CONICAL NEEDLE FASTENER FIX PLATE 13- CONICAL NEEDLE FASTENER 14- STARTING DEVICE 15- ADJUSTMENT MINIMUM SCREW KIT 16- ADJUSTMENT MINIMUM SCREW GASKET 17- ADJUSTMENT GAS VALVE SCREW KIT 18- SURGE PLATE (Compulsory) 19- GAS NEEDLE CLOSING 20- FLOAT PEG 21- FLOAT CHAMBER GASKET 22- FLOAT CHAMBER 23- FLOAT CHAMBER FIXING SCREW The aim of the exploded drawings is to identify the principles, the functioning and the whole mechanical unit

29 1. Throttle Valve Slide (40) 1.1 Length of Throttle Valve Slide Spec: 27.50mm ± 0.15mm 1.2 Length of Cut Away to the top of the Throttle Valve Slide Length of Throttle Valve Slide Spec: 23mm ± 0.25mm 1.3 Length of Cut Away to the top of the Throttle Valve Slide Length of Throttle Valve Slide Spec: 23.4mm ± 0.15mm 2. Mixture Needle Mini Rok (W 23) 2.1 Table of Needle Specifications as per Supplier Chart (Dellorto) (Also as per Master Sample W23 needle from the Vortex Mini Rok Importer) Type Value X Characteristic expressed in millimeters ØA ØB C ØD E F L W ± ±0.05 (26 ±0.5) 2.5 Measured right Reference ±0.03 at the tip Dimension ± The Technical Inspector may also compare the needle to a master sample supplied by the Vortex Mini Rok Importer. 2.2 No Washer is permitted to be fitted either above or below the circlip.

30 2.3 Note: The marking W23 on the needle does wear off after a period time. It is the responsibility of the competitor to ensure that if the marking wears off, that the needle is replaced with a new one. 2.4 Should the technical inspector inspect a needle that the marking is worn off; the needle will be checked with reference to the specification above and / or a master sample. The needle will then be impounded by the Technical Inspector and the competitor will be required to fit a new needle. 2.5 Wear marks towards the tip of the needle, where the needle goes through the emulsion tube is common. The needle should be replaced if wear is excessive. 3. Atomiser / Emulsion Tube (Mini Rok) (266 AN) 3.1 Length of Emulsion Tube Spec: 36.00mm ± 0.20mm 3.2 Internal Diameter from side 3.2 GO Spec: 2.66mm (GO) 3.3 Internal Diameter from side 3.3 GO Spec: 3.00mm (GO) x Rows of 4 holes GO Spec: 0.80mm (GO) NO GO Spec: 0.85mm (NO GO) x rows of 3 holes GO Spec: 0.80mm (GO) NO GO Spec: 0.85mm (NO GO) 3.6 Length of Nozzle tip to seating face Spec: 27.00mm ± 0.20mm

31 4. INSERT 4.1 Length of Insert Spec: 12.00mm ± 0.20mm 4.2 Thickness of Flange Spec: 1.00mm ± 0.20mm 4.3 Hole Diameter Spec: 4.90mm ± 0.30mm 5. Idle Diffuser (50) 5.1 Length of Idle Diffuser Spec: 9.50mm ± 0.20mm 5.2 Internal Diameter of Smallest hole inside the Idle Diffuser GO Spec: 0.5 mm (GO) NO GO Spec: 0.55 mm (NO GO) Starter Jet (60) 6. Idle Jet 6.1 Length of Idle Jet Spec: 27.00mm ± 0.25mm 6.2 Internal Diameter of hole inside the Start Jet GO Spec: 0.60 mm (GO) NO GO Spec: 0.65 mm (NO GO) holes, 90 apart GO Spec: 1.00 mm (GO) NO GO Spec: 1.10 mm (NO GO)

32 7. High Speed Jet / Main Jet The anti surge plate fitted between the emulsion tube and the main jet may NOT be removed. 7.1 Length of High Speed Jet / Main Jet Spec: 8.0mm ± 0.3mm 7.2 Internal diameter of main jet. Spec: Homologat on 8. Needle Valve 8.1 Internal Diameter of hole inside the Needle Valve GO Spec: 1.45 mm (GO) NO GO Spec: 1.55 mm (NO GO) 9. Float 9.1 Weight of Float Spec: 4.0grams (As marked on the bottom of the float)

33 10. Air Screw 10.1 Diameter of Air Screw Orifice. GO Spec: 1.10 mm (GO) NO GO Spec: 1.3 mm (NO GO) 10.2: Diameter of tip end: 0.9mm ±0.05mm 10.3: Diameter of tip: 1.2mm ±0.05mm 10.4: The Air Screw must be fitted with O-ring, washer and spring as illustrated.

34 A Other Dimensions A.1 Diameter of Throat. The throat diameter must be checked from both sides of the carburetor. Spec: 18.0mm ± 0.05mm GO Spec: mm (GO) NO GO Spec: mm (NOGO) A.2 Diameter of hole A2 as illustrated GO Spec: 1.00 mm (GO) NO GO Spec: 1.10 mm (NO GO) A.3 Diameter of hole A2 as illustrated GO Spec: 2.50 mm (GO) NO GO Spec: 2.60 mm (NO GO) A1 A1 A2 A3 A2 A3 B.1 Diameter of hole B1 as illustrated GO Spec: 1.10 mm (GO) NO GO Spec: 1.30 mm (NO GO) B1 B.2 Diameter of hole B2 as illustrated GO Spec: 1.0 mm (GO) NO GO Spec: 1.1 mm (NO GO) B2 B2

35 FUEL PUMP FUEL PUMP, PULSE LINE, FUEL LINES, FUEL FILTER: OEM DellOrto fuel pump and components as supplied by Vortex only. Only one fuel pumppermitted. The fuel pump must be mounted On the Vortex OEM mounting bracket. Length of pulse line 100mm maximum. All fuel lines must be continuous (one piece without restriction, spigots, junctions, taps and similardevices) apart from the fuel tank pick up, the fuel filter and the fuel pump. Exception: It is optional to fit a T junction in the fuel line between the Fuel Pump and thecarburettor and to run a return fuel line from this T junction back to the fuel tank fitted with appropriate barbed fitting. A fixed size restrictor may be inserted into the return fuel line only. This fixed size restrictor must not be adjustable when the engine is running. Between tank, pump it is allowed to mount only 1 (one) fuel filter. Copyright 2014 Karting Australia. All rights reserved. 35

36 INLET SILENCER OEM VORTEX MARKED CONNECTOR FIXING -CARBURETOR IN PLASTIC MATERIAL-FILTER (S y) k fo (F r ng) V R X AU Vortex OEM intake silencer with ADDITIONAL (mandatory) Vortex AU foam filter which must be fitted in all events. (See pictures). Foam filter must be free of damage/tears/modification. The fitting of the Vortex OEM mesh stone guard is optional. All dimensions as per diagram. The only allowable modification is the drilling of an 8mm (maximum) drain hole positioned at the front centre line of lowest point of the intake silencer box. Copyright 2014 Karting Australia. All rights reserved. 36

37 CR N C L eals mu be original or ex M (see pi ures) and i ed in he original or ex a ory loca ion dire ion and main aining he seal spring Main bearings mu be original or ex M NR or used Attention : ALL THE ENGINE PARTS MUST BE ORIGINAL BY VORTEX ROK. Neither engines nor accessories can be modified. By this we mean any shape, content or function changes which may differ from what previously conceived. Furthermore this includes any addition and /or removal of material and /or parts from the engine set-up package unless provided by this regulation. Copyright 2014 Karting Australia. All rights reserved. 37

38 FRONT SPROCKET / CLUTCH COVER Clutch cover may be modified only as stated herein: Only on the underside, in a manner not to breach the first vent slot as pictured. Clutch cover may be modified to accept the external starter. A maximum diameter hole 30mm is permitted. Top and Side view must remain unmodified in its shape. Rationale: Improved chain clearance when using larger rear axle sprockets. Attention: ALL THE ENGINE PARTS MUST BE ORIGINAL BY VORTEX ROK. Neither engines nor accessories can be modified. By this we mean any shape, content or function changes which may differ from what previously conceived. Furthermore this includes any addition and /or removal of material and /or parts from the engine set-up package unless provided for by this regulation. Copyright 2014 Karting Australia. All rights reserved. 38

39 Appendix A to Vortex Mini ROK Homologation Documents The following notes are additional to the details contained in these Homologation documents for the Vortex Mini Rok engine (the Engine ) and are to be read in conjunction with the specifications and details contained therein. They form part of the Homologation documents for the Engine. The Engine must at all times be used and be presented in strict conformity with the specifications detailed in the homologation documents. Unless otherwise expressly permitted by Karting Australia, only Vortex OEM parts that have been manufactured and/or supplied by Vortex for the Engine are permitted to be used in the Engine at any time. Neither the Engine nor any of its ancillary components may be modified other than in accordance with the Rules and these homologation documents. UNLESS IN THE KARTING AUSTRALIA RULES AND/OR THESE HOMOLOGATION DOCUMENTS IT SAYS THAT YOU CAN, THEN YOU CANNOT. A. Cylinder 1. All ports must be of intended design conforming to the homologation documents 2. Cylinder length 71.65mm +/- 0.20mm B. Cylinder Head 1. No material is to be added except for the purpose of spark plug thread repair. 2. Cylinder head profile must not vary from the original profile and will be checked with the VORTEX Cylinder Head Profile Gauge C. Head Gasket 1. Only one (1) cylinder gasket may be used at any time. D. Squish Gap 1. The Cylinder Head Squish clearance shall be a minimum of 0.8mm as per the homologation documents. 2. Shall be measured using 2.0mm solder wire (tin). 3. When inserted in the cylinder the engine shall be rotated until the solder is squeezed between the head and piston crown and parallel with the gudgeon pin. 4. Process shall be conducted on both the right and left hand side of the engine. 5. The average measurement obtained from both tests detailed in points 2 a) and b) above must bea minimum of 0. 8mm. E. Carburettor 1. Carburettor throttle cannot be actuated by electro mechanical means. 2. Maximum length of breather tube is 130mm. F. Induction Silencer 1. Minimum tube length 95.00mm. G. Exhaust 1. Only one (1) exhaust temperature gauge probe maybe fitted 2. Only one (1) exhaust gasket is permitted to be fitted H. Vortex AU Speedway Foam Filter 1. Vortex AU foam filters are yellow in colour and are to be procured through the AU Vortex Mini Rok Dealer Network. 39

40 I. Non-Technical Items 1. Unless otherwise specified, non-tech items are to be of the same specification as the original item. 2. No alteration from the original manufacturer s specifications is permitted to fit a non-tech item. 3. Anderson plug housing is a non-tech item. (Different colour Anderson plugs are permitted as replacement components. 4. Stickers that may be removed when requested by the technical inspector are allowed on the engine or induction silencer. 5. Engraving, stamping a name, stickering or marking an engine to allow you to identify your engine is permitted. Any such engraving, stamping, stickering or marking must not partially or wholly obscure the essential homologation identification markings on the Engine and its ancillary components. Copyright 2015 Karting Australia. All rights reserved. 40