Some years ago, in a fit of pique, I acquired a set of split FCR 41's 2nd hand. I'm now in the process of getting the 900 back on the road after it was laid up for a few years. The FCR's came with the blue plastic velocity stacks. I'm looking to fit either the air box with K&N filter or to fit pods. To do this, I need the intake stubs and seal are there any recommendations about a supplier? Apart from fitting an electronic fuel shutoff to circumvent the needle valves wearing and leaking, is there any advice on how to run the fuel delivery/return circuits to the fuel tank? Thanks in advance. Martin
I bought mine from Chris at CCW many moons ago and they had adapters very like these but in ally, there is a small lip and flange where you can install either the rubbers for the airbox or a set of pods - I have done both. Used to run them on the long manifolds and an airbox with a K&N & open top. However now I have split them and am running short inlets & pods on the same bellmouths. I'd go with something like this if you're gonna delete the airbox or if not just get the ally adapters, not sure I'd trust someone's 3D plastic jobbies from ebay tbh. https://www.frankmxparts.com/KN-luc...arburateurs-Ducati-750-900-SuperSport-Monster The leaks are normally from debris keeping the float needles from properly sealing and the fuel then siphons from the tank - not from the valves wearing, I'd hope you'd service the carbs before that. No need for an electronic cutoff as the main feed is by a pump just make sure your tank is scrupulously clean and fule delivered well filtered. I'd just copycat the standard system, ensuring you put back the restrictor in the return line to have an ever so slightly elevated pressure at the float needles when the pump is running (4.2mm ID IIRC).
@mcr998 I have the banked 41mm, theyve been in the bike for years, so I have some experience of the issues. I had the engine get hydrolocked with fuel, as the float needles got jammed open due to something. I would absolutely fit a fuel tap, I switch it on and off everytime I ride the bike. I had an electronic one, but when it rained it got into the connections, so I went back to manual. The fuel lines just need to be copied from the standard, which has a Y shaped connector, with a restrictor on the return, I think mines the standard piping from memory. They are awesome carbs, split ones give better top end over the banked, which give a little more torque.
