Modern additives have drastically changed the burn characteristics of modern fuels; consequently the settings devised by the factory are often inappropriate. Increasingly enthusiasts are looking for a way to optimise combustion at all engine speeds, improve performance and reliability.

Classic Sport Ignition (CSI) distributors preserve the original look but replace the mechanical advance mechanism with modern electronics which takes the any mechanical play out of the equation. Removing the points and condenser means no more gaps to set or dealing with often unreliable condensers. Cars fitted with CSI distributors will run more smoothly and more efficiently throughout the rev range and can be adjusted to alter power and torque characteristics to suit driver requirements. The Classic Sport Ignition distributor has been proven in numerous classic competitions including circuit racing, hill climbs, rally and time trials.

Supplied with fitting instructions and with 16 advance curves to choose from, designed by Denis Welch Motorsport, these units are ideal for those who want to fit and forget, or for those who wish to tune the engine, switch between the 16 curves with the turn of a screwdriver. This flexibility is ideal for drivers who use their car both on and off the track or even to choose specific advance curves for specific circuits, or even your favourite scenic drive.

Denis Welch Motorsport offer models suitable for 4 and 6 cylinder Austin Healey models and 6 cylinder Jaguar E-Type, negative or positive earth and with or without vacuum advance.

Austin Healey 4cyl

Austin Healey 6cyl, with tacho tower

Austin Healey, 6cyl, non tacho tower and Jaguar E-Type

The CSI distributors are one of more than 200 new products to feature in the recently launched 2016 Big Healey Performance catalogue. Now expanded to 96 pages and fully updated, the catalogue is available as a PDF download or ‘flip book’ version as well as printed and USB editions. Customers can download, view or order their catalogue on the Denis Welch Motorsport website, www.bighealey.co.uk.