Anybody has any idea of the maximum safe working pressure of the fuel hoses?
Stock pressure is 3 bar, but a fairly stad tweak is bringing it up to 4 bar when over 190BHP.
I also hear comments on 5 bar but from the turbo-nutter world.
Any ideas if 5 bar would be safe on our standard hoses/connections?
Standard hoses should take that sort of pressure no worries IMHO. Its not that much pressure really. We run the Nissan at up to 8bar fuel pressure .
Hoses are no problem, i would take the time to replace all the hose clamps with some decent items though. We had a leak at 4.5 BAR from a clamp that was fine up to that point, as soon as pressure was dropped below 4 it stopped, replaced it and no problems.
The hoses arent a problem, but the fuel rail might be, also it’s unlikely that the pump could sustain 5 bar when the engine’s requirements are at their highest, especially if it is not new. A higher capacity pump together with a tougher (metal) fuel rail with screw on fittings would make it bomb proof.
Dave
New, higher rate fuel pump has been already installed, so that should be no problem.
Thanks guys!