Carburettor Repairs
Balancing, Conditioning and Repair
Services | MRD | Vehicle Performance Specialists
Maxwell Racing Developments have over 30 years experience with carburettor tuning, covering almost all types of carburettor available, including vintage and historic carburettors. We are a recognised Weber calibration engineer and an Official Weber Carburettor Dealer – As recommended By Webcon.

We have been re-jetting, balancing and setting-up the Weber carburettors for over 30 years and have a UK wide reputation as being one of best in the business.

We keep a huge stock of Weber jets, though we also cater for a range of other carburettors including SU, Dellorto, Pierburg, Solex, Stromberg, V8 Holley, Edelbrock and motorcycle carburettors. SU carburettor needles are also stocked or bespoke made for your car. We keep a wide selection of calibration components for most type of carburettor, including gaskets, chokes and jets.

The majority of our tuning work is carburettor set ups on classic road vehicles, historic race vehicles and track and rally cars. As well as private owners and enthusiasts, we regularly carry out carburettor calibration work for high end classic car restorers, and celebrity car collectors.

We offer carburettor tuning for motorsport purposes, as well as road cars, including turbocharged vehicles. We have a great expertise in the world of short circuit oval racing, and grasstrack racing, where we can apply advanced techniques learned through years of experience to give you the engine control and throttle response you require to have the edge over your competitors.

Carburettor tuning is fine tuned using our rolling road which takes away any guess work. A visual representation provides us with detail in peak and maximum performance. You can see the difference one jet change has made to the fuelling and corresponding engine power and torque.

Maxwell Racing Developments are an official Webcon Agent.

We have recently undertook work on a 1968 Corvette Stingray - Check out our Facebook page for some of our latest projects.

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Rolling Road Tuning
Classic Car and Track Cars
Services | MRD | Vehicle Performance Specialists
With our rolling road and classic car tuning services, our target market is primarily (though not confined to) classic vehicles running distributor type ignition systems and carburettors. We specialise in the re-jetting/recalibration of Weber, Dellorto and SU carburettors. We will successfully tune anything from race or rally cars to a classic road going car.

Why is rolling road classic car tuning important? The Rolling Road allows us to tune the engine under varied loads and speeds which is particularly helpful whenever you modify your engine or as a diagnostic tool. If you have a problem such as a misfire or flat spot at a particular rev range, a tuning service is always recommended. We are able to hold consistent load/revs for much longer than is practical on the road in order to test different solutions, or make adjustments for increased power/torque.

A worn out or badly set up carburettor can waste fuel, perform badly, or cause serious damage to an engine. We can accurately measure the air/fuel ratio throughout the rev range and adjust accordingly. It is particularly important to check the air/fuel ratio if the engine has been modified in any way as this will most certainly change the fuelling requirements of any engine.

Ignition timing is crucial to every engine and it is important to remember that it’s average power (the area under the graph) and not peak power that accelerates your car. Getting the ignition timing right is not only vital to the engines long term health, but can be used to improve mid-range torque, throttle response, fuel consumption and overall temperament of the engine.

We can produce accurate plotted power and torque graphs at flywheel and driven wheels. The software also allows us to overlay graphs to show any improvements after adjustments are carried out.

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Alternatively, you can contact us using the following methods.

Tel: 07831 518637

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Opening Hours

Monday: 09:00 - 17:00
Tuesday: 09:00 - 17:00
Wednesday: 09:00 - 17:00
Thursday: 09:00 - 17:00
Friday: 09:00 - 17:00
Saturday: 09:00 - 12:00
Sunday: Sorry, we are closed.