SHY 7G Posted June 27, 2015 Share Posted June 27, 2015 Hi All I have a diagram of the typ. carb. setup for the flow of fuel and air to the inlet/outlets. But matching it to what my carb. setup I can see that there is no float chamber overflow/breather port on my carbs. I have included photos showing the front and rear of my carb.'s setup and wondered if someone could tell me where to connect. the return 6mm line to? just out of curiosity would the return line be connected to the back of the feed line supplying the driver's side carb.?? Quote Link to comment Share on other sites More sharing options...
Team Idris Posted June 27, 2015 Share Posted June 27, 2015 The 'return restrictors ' are in the return pipe. (I replaced mine with a sprung ball valve set to 4 psi). So it doesn't matter if the fuel enters left or right as they are just threaded 'T'. I think you could block one and just feed 4-5psi! Return pipe seems a stupid idea that doesn't fix the issue of fuel boiling in the carbs. The big plastic ports go to the rocker boxes. The 6mm next to them are the bowl breathers. I have one pipe on each of mine. They let some fuel out on really steep nose-downs. As long as the pipes clear the hot manifolds they are good. Quote Link to comment Share on other sites More sharing options...
Team Idris Posted June 27, 2015 Share Posted June 27, 2015 You can see on the sketch that yours use a casting port that is blocked off. Joined by a vertical channel that shows as raised metal on the body. Quote Link to comment Share on other sites More sharing options...
SHY 7G Posted July 2, 2015 Author Share Posted July 2, 2015 Hi all I have is a straight 6mm return line with no type of return restrictor?? just need to know if by connecting the return line to the back of the opposite input line it will allow excess fuel to return?? Quote Link to comment Share on other sites More sharing options...
steve b Posted July 2, 2015 Share Posted July 2, 2015 the restriction is effectively the pipe nut and fitting - although the return line is 6mm bore the hole in the fitting is only about 3mm dia . On your pics the rh connection is in and the lh is return . The overflow for the float bowls are the angled brass stubs and the crankcase breathers are the larger grey stubs . hth Steveb Quote Link to comment Share on other sites More sharing options...
v8classic Posted July 16, 2015 Share Posted July 16, 2015 I'm just on with this on mine at the minute. I only have 2 pipes coming from the carbs for the fuel in. Does anyone know where I could get the restrictors/ parts that fit on to the carb from? Would I be able to just make them up with a metal t section and some fuel hose? Cheers Will Quote Link to comment Share on other sites More sharing options...
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