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what are they and are they the same as throtle boddies??

Sorry to be thick

I dont know the ins and outs but i do know
it has nothing to do with

Ducks Feet !

hiya,

twin webers as youare referring to are a Carburettor and not injection. They work great and give good power gains on an older car but on newer cars with Tighter emissions controls they arent a great solution. The carburettor uses a needle (jet) to measure out the fuel whereas the throttle bodies (which look similar save for a "plug" poking out of them) use a computer controlled injector.

Downsides are they arent very economical, can be awkward to adjust and get running spot on.

hope this helps

Phil

Basically, carbs rely on suction and vacume from the engine to supply the air / fuel mix via jets. TB's use injectors and are ECU controlled.

Carbs

Basically there is a choice of makes here, commonly used are Weber and Dellorto. The problem you will have with other makes is finding a manifold to fit the carbs to your engine. Both these makes have readily available manifolds. The carb works by using jets to supply the fuel. The fuel flow delivered through these jets is basically determined by suction from the vacuum in the cylinders (Venturi effect). Different size jets will allow different amount of fuel supply. The Weber DCOE40/45 kits can be supplied with the correct jetting for a standard or modified engine for your car and the linkages to connect them up. Webcon (Weber) have released a series of kits for carb conversions on various cars. The cost is around £1000 including all you need which is both carbs, manifold, gaskets, fasteners, sensors, linkages and the alpha 3d programmable 3d ignition system. (more on that later)

Throttle bodies

A lot of people get confused and say throttle bodies when they mean carbs and vice versa and often think that they are the same thing. Essentially they are the same thing and do the same job but the main difference with throttle bodies is that they use injectors instead of jets to control the fuel delivery. This means that you can electronically control and program the fuel delivery from an ECU and therefore have more control. They are more expensive though and ultimately don't deliver a great deal more power than carbs but they do offer refinements An injected car and cold starting can be a bit spluttery with carbs whereas even a cammed up engine will start perfectly from cold on throttle bodies and idle smoothly as low down as 600 rpm in many cases. The throttle bodies do provide more torque lower down generally and ultimately a better spread of power. The Weber Alpha throttle body kit consists of all the same components as the above carb kit but with the throttle bodies instead of carbs, the kit is around £2000. The 3d ignition system allows programming of the ignition which bypasses the normal distributor and is therefore customisable.

well well you do learn somethink new every day

Twin Webber D.C.O.E. Carb's





Throttle Bodies

Does look very for like matey.Kinda familiar to mine. The 1.6Si fezzer engine also has the exact same top end as my 1.4 They look identical but are obviously hiding 2 different engines

Twin Choke Webber DCOE's are the Dogz Gonards mate, after fitting mine many moons ago i took it for a spin and i was grinning like a cheshire cat......

The performance increase was awesome but it dosnt end there.......

Induction noise in immence, you floor the throttle and you get this almighty roar from the engine and you simply smile at the noise, kinda funny driving everywhere with this painted on smile, lol.....

I would strongly recommend them to anyone looking for more performance.

There not that fuel hungry if you drive normally, but its hard not to floor the throttle constantly just to make you smile and hear the induction roar

hiya

anyone want to hear webers then i should be out and about soon in the nova - its passed its mot today

Phil

I'm putting 4 down draught (IDA's) on a mid engine'd V8 kitcar i'm building, seen it done before and it goes like a corpo hooker.
Will leave a smile on your face and stain in your boxers.