AS 4430.1:2003 pdf free.Evaluation of devices, additives and processes which claim to improve vehicle performance Part 1: Engines designed for leaded petrol to operate on regular unleaded petrol.
4.5 Engine Reciprocating spark ignition internal combustion engine with cast iron cylinder head from original production without valve seat inserts. 4.6 Engine system Encompasses the engine’s mechanical assembly, fuel system, ignition, induction, lubrication, cooling, exhaust and management systems. 4.7 Knock (knocking, pinging or pinking) The characteristic noise produced by uncontrolled combustion. It is caused by the accelerated burning of the last part of the charge to be reached by the flame in the combustion chamber. 4.8 Lead replacement petrol As specified by national legislation, the Fuel Standard (Petrol) Determination 2001 of the Fuels Quality Standards Act 2000. 4.9 Premium unleaded petrol As specified by national legislation, the Fuel Standard (Petrol) Determination 2001 of the Fuels Quality Standards Act 2000. 4.10 Process An action or a series of actions performed on the engine system. 4.11 Unleaded petrol As specified by national legislation, the Fuel Standard (Petrol) Determination 2001 of the Fuels Quality Standards Act 2000. 4.12 Shall Indicates that a statement is mandatory. 4.13 Should Indicates a recommendation. 4.14 Valve seat recession The result of wear to the valve face or valve seat allowing the valve face to embed into the cylinder head surface and the valve stem to protrude further above the cylinder head in an overhead valve engine. 5 PERFORMANCE REQUIREMENTS 5.1 Exhaust valve seat recession When determined in accordance with Appendix A, Paragraph A4.3, and considering the worst valve, the recession recorded during the test using unleaded petrol with the device, additive or process applied shall not be more than 0.25 mm. 5.2 Knock When determined in accordance with Appendix A, Paragraph A4.4, there shall be no more than 3 degrees of spark retard between the test using premium unleaded petrol with a VSR additive.
6 MARKING Each claim for a petrol engine system shall be clearly and indelibly marked with the following information: (a) The name and address of the manufacturer or distributor. (b) The recommended storage conditions (if applicable). (c) The maximum shelf life, indicated in the form of a ‘use-by’ date, assuming storage conditions as recommended in Item (b). (d) A safety warning, if applicable. (e) For additives, the contents of additive on all packaging. (f) A statement on all packaging of vehicle suitability (i.e. pre- or post- 1985 model vehicles). (g) A statement of any condition under which application of a device, additive or process is not applicable. NOTE: Manufacturers making a statement of compliance with this Australian Standard on a product, packaging, or promotional material related to that product are advised to ensure that such compliance is capable of being verified.AS 4430.1 pdf download.