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Our Turbosmart fuel pressure regulator has been everything a fuel pressure regulator should be, never on the top of our mind, due to its reliability and repeatability.
Forgive the poor quality of this shot, but it is the only installed photo we have of our fuel system. Mounted where the other half of our gas tank would normally go, you can see one Bosch 044 outlet, the Zeitronix Ethanol Analyzer (mounted on the return line) and our custom surge tank, which is fed by the return and lift pump in the modified, OEM fuel tank.Getting E85 fuel to the excessive amounts of compressed air is handled by (4) Fuel Injector Clinic 2150cc injectors. Twin Bosch 044 fuel pumps held in place by Radium Engineering mounts feed the injectors and a Walbro 255HP lifts fuel from our custom half OEM gas tank to the surge tank. A Turbosmart 1:1 Fuel Pressure Regulator ensures proper fuel flow at all times. A Zeitronix E85 analyzer keeps tabs on alcohol content in our E85. We’ve run into a problem before the analyzer was installed where the advertised E85 was actually E30 and damaged the engine. Expensive lesson learned.
We tried a slew of different options to control overfilling of catch cans on track but one of the keys to the solution was this Radium Engineering Competition catch can. We closely followed MotoIQ's recommendation on crankcase ventilation, trying two of the three “Good Idea” options listed. In the end, we went with what we felt was a “Bad Idea” by venting the catch can to atmosphere rather than recirculating back into the exhaust or inlet for extra scavenging. We wholeheartedly believe that the Good and Great ideas are normally the way to go, but with 25+ psi, a wet sump, combined with being on a race track with excessive G's, the equation changes slightly.We experienced some frustrating overfilling of our catch can during the 2012 Global Time Attack/Super Lap Battle finals at Buttonwillow and we’ve been on a mission since to solve this problem. Luckily for us, we figured it out and a big part of the solution was the addition of a Radium Engineering Competition catch can. You can read more about Radium’s catch cans on MotoIQ here. Unluckily for us, the solution was figured out at Road Atlanta, about an hour before I formally introduced myself to the wall on the outside of turn 1.
