Carburettor repairs / overhaul
SU, Solex, Weber, Dellorto, Pierberg, Nikki, etc etc etc.....
Modern fuels - There is very little doubt that modern fuels can be quite aggressive towards many of the materials used on classic cars. I'm not about to write a book on the topic, but let's just say it is already fairly well known and documented.
In addition to material compatibility, there are then difference in regards to both 'octane' and 'calorific' values when comparing traditional and modern fuels also. Octane and Calories are two different properties of the fuel, hence don't confuse the two.
When carburettors are blocked or need repairing?
The carburettors used on most classic cars consist of float bowls / reservoirs, jets, needles, emulsion tubes and various fine capillaries. It is incredibly easy for these to become blocked, and result in a carburettor/s which will not function correctly.
Sometimes they can be given a simple clean, however more often than not they can require a full overhaul and either a service kit fitted, or a more complete repair/overhaul kit fitted.
On the below pic, the green slime is what existed inside the float bowl of one carb from a set of twins........not difficult to see why only one carb was functioning!!!
SU Carb H4 Float bowl 'Ethanol' slime.
SU, HS4 Float Bowl
Oxide & Debris
Faulty / leaking needle valve
Below are a 2 sets of Triple Zenith 40 TIN down draught carburettors.
Mechanical Damage to Carburettors
Most carburettors have 'wear and tear' maintenance items which allow them to function.....shafts, bearings, needles, jets, floats, valves. In the worst case scenario, the result is petrol leakage and the risk of fire.
Of lesser severity is when the vacuum created by the engine can draw air in via a leaking spindle bush, diaphragm, seal or gasketed seem. Instead of pulling in a fuel and air mix as per the carburettors design, its far easier for the engine to pull in air instead.
Carburettor Repairs and Overhaul
On a 'case by case' basis, we are often able to carry out repairs and overhaul to almost all carburettor makes and models. As a general rule, we do this as an extension of our tuning work, to then be installed / setup & tuned by AG Classic Car Tuning.
Ofcourse....subject to the relevant overhaul kits being available!!
Triumph GT6 Twing Zenith Stromberg CD150
Healey 3000 BN7 3 x HS4
MGB HS4 Twin SU's
1953 Ford Prefect Solex
Twin HS4's for a kit car
Mini Cooper 'S' inlet, sonic bath cleaning
MGB 1800 Twin HIF4 SU
Hillman Imp Rally Car, Twin CD125 Stromberg
FIA Sprite 1098, Twin HS2 SU's
Surfaces engineer 'blue' prepared
Alvis TA21, 2 x H4 TH (with aux carb)
Jaguar MK2 2.4, Solex B32 PB1S twin Carbs
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