At the US131 NMRA race this past weekend, my car caught fire due to a fuel leak in the burnout box. The passenger side fuel rail pumped up and fuel started spraying out the top of the number 4 injector. The fuel rails that I were using had a vertically slotted bracket which bolted to the intake. 75 psi of fuel pressure must of been too much for the screw to hold it in place.
The passenger side fender is burnt real bad. The paint blistered off the fender. The passenger side door and passenger side of the engine bay were discolored. The car still ran and we were able to fix it to run the first round of elims. I replaced the fuel rails I had with the Behind Bars Race Cars fuel rails and the new rails are a much better design. They are the best fitting fuel rails I have ever used. A lot of the wiring needs to be re-wrapped, but I couldn't find any wires which had the insulation burnt through.
Just some things to think about in the future. Make sure all of your fuel line connections are tight, ensure that your fuel rails are positively locked from being able to lift up off the intake, and maybe it isn't the best idea to raise your fuel pressure real high to make a smaller set of injectors work. I run 60 psi of base fuel pressure and with 20 psi of boost it will spike up to 80 psi. I imagine an FMU would be even worse.
All in all, it could of been a lot worse if I was going down the track. Flames came inside the car when I was standing still so I could only imagine what it would of been like if it was moving. I guess the flames looked much worse then the damage. It seemed like it took forever to get the fire put out.
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