Technical Requirements

Updates to rules and regulations may be applied mid-season by Motorsport Ireland via Bulletin.

Here we have some details on the competition rules and safety requirements for both Car and Driver.

Hillclimb and Sprint specific Regulations:

Download: Organisation of Hillclimb and Sprints – Appendix 80
Download: Hillclimb and Sprint Championship – Appendix 81
Competitors see Appendix 81. This document combined with Appendix 2 “Scrutiny Requirements” will contain all the information you need regarding preparing your car for Hillclimbs and Sprints.

**Classes & Definitions * (from MI Yearbook 2022, Appendix 81):**

3. CHAMPIONSHIP CLASSES.
3.1. Definitions.
Production Saloon:

Bodyshell as per originally manufactured. Includes any steel monocoque production road car which was manufactured with more than 500 examples and has more than 2 seats.

Modified Production Saloon

(as above) bodyshell may be modified but no section may be space-framed. Any part of the bodyshell which is modified must be replaced by the same material of equal or greater thickness, wheel arch material is free and Including Mini’s with removable front section.

Roadster:

(Bodyshell as above) Includes any 2 seater and 2 door steel monocoque, open or closed top. e.g. MR2 or MX5.

Alloy & composite saloon:

Production saloon with more than 500 examples whose chassis is not manufactured from steel. e.g. Morgan
Spaceframe: A tubular structure which if removed would prevent the vehicle being driven.

Space-framed saloon:

Bodyshell may be modified, Must retain the original roof, A, B & C pillars and sills of the original car and have the appearance of this car.

Silhouette saloon:

Chassis space-frame / alloy / composite. Bodywork to have the appearance of a large production road car with the same
dimension of windscreen as that car. e.g. RT2000

Sportscar:

open or closed top, with enveloping bodywork. Includes prototypes. Kit car: A vehicle that can be purchased in component
form for self-assembly, capable of being road registered and that are on sale to the general public. Including the Two-Seater or 2+2 or
single seated

Single seaters:

Open wheeled single seater formula type racing cars.

Rally car:

Cars as per current and previous MI
Rally Regulations.

Turbo / supercharger: cc x 1.7 applies to all classes.

Rotary engine; multiplication factor of cc x1.5 applies to all classes. The 12a engine may run in the appropriate two valve per cylinder class
and all others in the appropriate over two valve per cylinder class.

3.2. Classes.
1A – ‘Bantam Saloon Class’

Production / Modified production saloons up to 1400cc.
‘Roadsters’ up to 1400cc.
Rally cars up to 1650cc not more than 2 valves per cylinder.

1B – ‘Cento Challenge’ Class

Fiat Cinquecento / Seicento as per Technical Regulations published on the MI website. See: Technical Regulations

2 – ‘1600 Saloon Class’

Production / Modified production saloons 1401 – 1650cc.
‘Roadsters’ 1401-1650cc.

3A – ‘Super Saloon Class’

Production / modified production saloons 1651cc to 2100cc.
‘Roadsters’ 1651 – 2100cc.
Front engine Sportscars up to 1650cc (car derived engines).
Front engine Sportscars up to 1200cc (motorbike derived engine).
Silhouette cars up to 1650cc.
Space-framed saloons up to 1650cc.

3B – ‘Ultimate Saloon Class’

Production / modified production saloons over 2100cc.
‘Roadsters’ over 2100cc.
Silhouette cars from 1651cc-2100cc.
Space-framed saloons over 1650cc.
Front engine Sportscars with bike derived engines over 1200cc.
Front engined Sportscars with car derived engines 1651-2100cc.
4WD Production saloons / modified saloons.

3C – ‘Sportscar Class’

Silhouette cars over 2100cc.
Rear engined sportscars up to 2100cc.
Front engine sports cars with car derived engines over 2100cc.
Alloy & composite saloons unlimited.

4 – ‘Historics’ Class

Classic cars as per HRCA regulations (reference MI appendix 49 and FIA appendix K). Compliance documents
required: HTP, HRVIF, or written confirmation of compliance with the HRCA regulations from an authorised
representative of the HRCA.

5 – ‘Formula Ford / Vee’ Class

Formula Ford 1600 / Classic Formula Ford 1600 as per current or previous Ford Motorsport regulations.
Formula Vee as per current or previous
Formula Vee regulations (Appendix 45).
It is permitted to use the current AVON tyres in lieu of the Dunlop tyres specified in previous regulations.

6 – ‘Super singler-seater Class’

Single seaters up to 2100cc having only 2 valves per cylinder .
Single seaters up to 1650cc having more than 2 valves per cylinder.

7 – ‘Libre Class’

Single seaters over 2100cc having only 2 valves per cylinder.
Single seaters over 1650cc having more than 2 valves per cylinder.
Rear engined sportscars over 2100cc.
4WD cars (to cover any 4WD vehicle that is not rally / production / modified production saloon).

8 – ‘2 Litre Rally Class’

Rally cars up to 1650cc with more than 2 valves per cylinder.
Rally cars up to 2100cc with not more than 2 valves per cylinder.

9 – ‘3 Litre Rally Class’

Rally cars 1651cc – 2100cc with more than 2 valves per cylinder.
Rally cars 2101cc – 3000cc with not more than 2 valves per cylinder.

10 – ‘Unlimited Rally Class’

Rally cars over 2100cc with more than 2 valves per cylinder.
Rally cars over 3000cc with not more than 2 valves per cylinder.
All 4WD rally cars.

Subject to sufficient entries these classes must apply to all Championship events. The organising clubs may include extra classes or amalgamate classes, subject to the approval of the Hillclimb /Sprint Committee.
Rally cars must run “Rally Ready” – to include tyres, seats etc.

*See current MI Yearbook and MI Bulletins in case of mid-season updates.

Flags:

Generally speaking, 3 flags will be used in Hillclimbs and Sprints. The Yellow flag, the Red Flag and White Flag. Please learn what all the flags mean as they may be used at events.

Download: Flag Signals – Appendix 8

Technical Requirements