Tuning Weber twin choke 30DIC & 30DGF Carburettors

[Toshi 975]

A lot of 500 owners do not even recognise one of these carbs when fitted but the 30DIC carb was one of the first to be used for tuning. Quite rare now as they were only ever fitted to the 850 Sport Coupe and Spider. The 30DGF carbs were fitted to the 126 Bis models with small Venturi sizes and larger sizes fitted to the Panda 30 models which never made it to the UK. Both types are fitted with progressive choke set ups which suit driving modes in that with a light throttle touch you can drive on one choke like a single carb. The Panda 30 DGF is quite well known for tuning and I thought the more restricted Bis carb might suit smaller capacity tuned engines so I tried one on a 540cc engine with some success. I also ran the 30DIC on larger engines very successfully but the secret is to get the jetting right for the particular engine.

 

[the hobbler]

A lot of 500 owners do not even recognise one of these carbs when fitted but the 30DIC carb was one of the first to be used for tuning. Quite rare now as they were only ever fitted to the 850 Sport Coupe and Spider. The 30DGF carbs were fitted to the 126 Bis models with small Venturi sizes and larger sizes fitted to the Panda 30 models which never made it to the UK. Both types are fitted with progressive choke set ups which suit driving modes in that with a light throttle touch you can drive on one choke like a single carb. The Panda 30 DGF is quite well known for tuning and I thought the more restricted Bis carb might suit smaller capacity tuned engines so I tried one on a 540cc engine with some success. I also ran the 30DIC on larger engines very successfully but the secret is to get the jetting right for the particular engine.
View attachment 463908View attachment 463909View attachment 463910

And the strange this is that although the 'DGF' carb sits at an angle when fitted to the 500/126, it doesn't seem to affect the running---very strange Alice.

 

[Toshi 975]

And the strange this is that although the 'DGF' carb sits at an angle when fitted to the 500/126, it doesn't seem to affect the running---very strange Alice.

That is true but only if you use the original Panda 30 inlet manifold. The purpose made manifolds keep the carb level.

 

[Bleeding Knuckles]

I love the 30 DGF carb it's a very flexible unit to use with the 500 engine. I Cannot remember the full jetting of mine, but the main jet was one stage larger when I obtained it and this has not made any difference to either of my engines, one is 704cc and one is 712cc both run equally well with the present set up. Regarding the odd panda manifold I did find that this caused the top of the carb to be very close to the engine bay roof, but lowering the engine with an 18mm block solved the problem along with a low level replacement and a pancake filter. Easy to strip and clean with all parts available, BUT make sure that you get the complete linkage and dashpot as these can be difficult to obtain - unless you have a few spares that is .
Ian.