regulations - The Drayton Manor Park MG Metro Cup

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Standard production SU carburettors must be retained and must not be modified, except where stated otherwise. Needles and settings are free. Ram pipes (stacks) are permitted. Class A MG Metro and Class B MG Metro Turbo - Internal polishing of the manifold is permitted. Class B Modified MG Metro – The manifold may be freely modified internally. Class C MG Metro Turbo - Internal polishing and metal removal from the manifold are prohibited. It is permitted to fit a heat shield. Class C MG Metro 1380cc - Inlet manifolds and carburettors may be of any type or manufacturer. Turbochargers. All units must be set and sealed prior to practice and race use by the Eligibility Scrutineer. The penalty is exclusion. Access to the actuator and rod must be unobstructed at all times for checking purposes. Class B MG Metro Turbo. Must retain the standard production MG Metro Turbo turbocharger unit, together with the standard production actuator capsule. The actuator setting is 3.5psi for 0.015” (0.38mm) of actuator rod movement. Class C MG Metro Turbo. Only the standard production MG Metro Turbo turbocharger unit or STR 985 are permitted, together with actuator capsule STR 1081 (stamped 430099- 32). The actuator setting is 5.0psi for 0.015” (0.38mm) of actuator rod movement. The only modifications permitted are: 1) The dump valve may be removed and blanked off. 2) Removal of the boost modulator ECU. 3) The plenum chamber must be fitted with an additional nozzle (minimum bore 2mm). The actuator must be controlled by a hose directly connected to this additional nozzle. 4) A boost gauge may be fitted. It may only be plumbed into the plenum to fuel pressure regulator hose. Class C MG Metro Turbo - The only permitted modifications to the standard production SU carburettor are: 1) Drill body and counterbore the float chamber for external balance pipe fitting. 2) Piston springs are free. 3) Enlarged needle valves in the float chamber to assist fuel flow. 4) A spacer may be fitted to increase the float chamber capacity. 5.7a.6 EXHAUST SYSTEMS Except where stated otherwise the exhaust manifold and the remainder of the exhaust system may be of any type or manufacturer. The exhaust tailpipe must exit at the rear of the car except where stated otherwise. Exhaust manifolds and down pipes may be heat lagged. Heat shields are free. Class B MG Metro Turbo - The standard production exhaust manifold must - - 19 - -
e retained. Class C MG Metro Turbo - The standard production exhaust manifold must be retained. It is permitted to modify the manifold to match the ports in the cylinder head. The outlet pipe may exit through or below the body left hand sill not more than 650mm forward of the rear wheel centre. 5.7a.7 IGNITION SYSTEMS Any Rover ‘A’ series production distributor is permitted, with the curve modified to provide the optimum advance required. It must remain in its original position. The vacuum advance may be disconnected or removed. Ignition coils, spark plugs and HT leads may be of any type or manufacturer. The coil may be relocated. Electronic systems are permitted. Apart from simple rev-limiters and shift lights, all electronic engine management aids are prohibited. 5.7a.8 FUEL DELIVERY SYSTEMS Fuel pumps, filters and pressure regulators may be of any type or manufacturer. Unless continuous metal lines are fitted, braided hose with screw connections are mandatory. Fuel lines must be adequately protected and clipped within the drivers compartment. Class C MG Metro Turbo and Class C MG Metro 1380cc - It is permitted to route the fuel lines through the vehicle, subject to MSA regulation J5.13. Class C MG Metro Turbo - A fuel cooler (air radiator only) may be fitted. 5.7b ENGINE - ROVER METRO/100 – K SERIES This must be the standard production K series unit for each class to the original manufacturers specification, with the following permitted/prohibited modifications. 5.7b.1 PERMITTED MODIFICATIONS All engines must retain the standard production cylinder block, cylinder head, crankshaft, camshaft, con rods, pistons, valves, valve springs and all other standard production parts for the relevant engine capacity, except where stated elsewhere. Cylinder head may be skimmed. Gaskets, oil pump, oil filter and drive belts may be from any manufacturer. Rover Metro (all) - The only permitted engine is the 1.4 K-series (1397cc), i.e. bore 75.00mm and stroke 79.00mm. 5.7b.1.1 Class A Rover Metro/100 – 1397cc 8 Valve, Carburettor Version Cylinder head must be standard production 1400cc 8V with standard valves inlet 34mm, exhaust 31mm – no material may be removed from the ports but combustion chamber can be machined/polished to regulate compression ratio. Camshaft must be the standard production item with maximum 9.0mm lift/240 degree duration. - - 20 - -
Page 1 and 2: THE DRAYTON MANOR PARK MG METRO CUP
Page 3 and 4: Drayton Manor Park MG Metro Cup in
Page 5 and 6: Class C - Rover Sport/BRDC Trophy -
Page 7 and 8: 3.2 BRIEFINGS Organisers should not
Page 9 and 10: 3.9.2 Pit lane - The outer lane or
Page 11 and 12: The Drayton Manor Park MG Metro Cup
Page 13 and 14: 5.6 BODYWORK 5.6.1 PERMITTED MODIFI
Page 15 and 16: 5.6.1.4 Silhouette Standard product
Page 17 and 18: achieve the required compression ra
Page 19: 5.7a.2 PROHIBITED MODIFICATIONS Fur
Page 23 and 24: 5.7b.4 OIL/WATER COOLING Rover Metr
Page 25 and 26: 5.7c.7 IGNITION SYSTEMS No modifica
Page 27 and 28: drilled for cooling purposes. Class
Page 29 and 30: conductive material. MG ZR 105/Rove
Page 31 and 32: (list 1B) are permitted as follows:
Page 33 and 34: 5.17.2 SUPPLIERS Championship decal
Page 35 and 36: REGISTRATION FORM Please post the c

regulations - The Drayton Manor Park MG Metro Cup

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