Tuning Largest Carburettor

[Phild76]

Hi, I'm converting my car slowly to a 595 replica, I've upgraded the piston and cylinder to the 70mm upgrade. The car is currently running a Weber 28imb, is it possible to put a larger carb on the car? If so what carburettor would recommend. Thanks

 

[the hobbler]

Hi, I'm converting my car slowly to a 595 replica, I've upgraded the piston and cylinder to the 70mm upgrade. The car is currently running a Weber 28imb, is it possible to put a larger carb on the car? If so what carburettor would recommend. Thanks

In my opinion, the best carb that you can fit would be a "Dellorto 24/30 FZD". Sure, in Italy they are fitting BIG Weber and Dellorto 'twin-chokes', or motor-bike carbs (Kehin or Mikuni), but the problem in the UK is that very few people have the experience of putting these carbs on the 500/126 variants. The FZD Dellorto IS well known over here, is a simple carb (which has both a choke and an accelerator pump), is light enough that it doesn't need additional support, stays in tune, most of the parts are readily available still (if you know who to ask and where to go to) and all the jets can be changed whilst the carb is still bolted to the engine. They are quite expensive (as carbs go), but I think well worth it. I think that if you approach "Toshi", he has one of these carbs complete with its dedicated inlet manifold, for sale.