Don't know if this has been discussed B4 but.... Went out with my tuner today for a street test with his A/F meter. I've noticed lately that my fuel press. drops OFF a tad during hole shot. ( from 25# to 55# to 35# under full throttle in 1st gear). The A/F told us at that point she leaned out to 16 to 1 !!! After shifting into 2nd she dropped back down to 11.8 to 1 which is where she is tuned to. Also at this point the fuel press. went back to 55# ?? This was with just over 3/8 of a tank of fuel. Just for kicks I brought the fuel level up to 3/4 tank and THAT solved my problem. 11.8 all the way thru the pass. Reason I'm mentioning this is because I've been racing on less than a 1/4 tank for a very long time and never realized I've been suffering from "sloshing" gas in the tank. And yes I have twin 255's in tank but I found out those won't overcome the LACK of fuel in the sump. If you guys have come across the same situation has anybody figured out a remedy OTHER THAN topping off the tank?
New/Old Fuel Pressure Problem
- Thread starter smilinjack
- Start date
So am I the only one to experience this problem??
I had the same problem. And found the same cure, I never race with less than 1/2 of a tank.
With the stock tank I never raced with less than 10 gallons of fuel. The stock tank is very long front to back and fuel sloshes a lot. I recently had my tank cut down to 10 gallons to solve this issue. I can now run much less fuel to save weight(and the cost of an extra can of C16) without fear.
Glad you found this problem before disaster hit.
Jim
Glad you found this problem before disaster hit.
Jim
How did you have your tank cut down? I've been thinking fuel cell. Is anybody running a fuel cell mounted in the same area as the OE tank ?
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