[John Rogers]

Here are some items when I raced a 2.8L type 4 stroker motor with Weber 48's. We ran 3.5 to 4 PSI fuel pressure, raising or lowering to change the enrichment. We found that 5 PSI was too high in most cases. We never ran a bleed off line or recirc line as the Webers did not need one and most of the vintage racers in the HSR Porsche 2L series never used them either. We used a Holly regulator and had the fuel pressure gauge in a line that connected the carbs after the fuel inlets. We found that to insure no starvation, we went with 150% of what the engine requirements were for fuel CAPACITY, not pressure. There are many racing sites that let you input parameters such as displacement, estimated HP, RPMs and other stuff and will tell you the GPH requirements. You can also check with a shop that runs engines like yours. One thing to note, a 2.8L four cylinder engine that puts out 180 to 200 HP at the rear wheels does not need as much fuel as the same size six making the same HP. A couple of final notes, I would suggest an air fuel meter and O2 sensor to keep an eye on that expensive motor you have as it takes very little time to melt a piston if one of the carb barrels gets starved! Last of all I would suggest a trip to the dyno to set everything up as Wayne Baker likes to say, 1 hour on the dyno is worth 4 or so at the track!