Originally posted by rossiRocket
I was finishing up my build on the car and wanted to know what lengths you guys are running for your fuel tubing, both to the engine and from the pipe? What are the affects of running a longer one compared to a shorter one? I was just about to copy the manual and keep the fuel tube to the motor short and the pipe tube long, but after seeing Atsushi Hara's car ~>
I see that he has both fuel lines long. Any body know why? Will this allow the engine to hold its tune better perhaps?
People run long pressure lines to hlep smooth out the pressure pulses from the pipe. At max revs the pressure pulses are very strong and can foam the fuel causing a lean fuel mixture.
A pressure chamber accomplishes the same thing without a tangled mess of fuel tubing. I am using the big Kyosho fuel filter with the mesh screen taken out as a pressure chamber.
I run my fuel line 8in (20cm) which is the maximum. Someone was teling me at the track that the tank is undersized so you can run a fuel filter to bring it up to 75cc if you are going by the book. If not, I'd run it as long as convenient. I have seen some people go overboard because it takes so long for the fuel to cycle through the line.