98 Cobra, race car (factory tank), gutted, no cats/emissions, etc
Last year, I always had a gas smell in the car that would show up after a few laps. I just went with it, assuming it was a weird vent issue. Over the winter I cut off my mufflers (turn downs right before the tank), and welded some resonators on it and didn't have time to put a set of turndowns/dumps back on.
First race of the year was last weekend and I ended up getting a mechanical because the car was spitting fuel on left hand turns (the gas smell was really, really bad and it was pooling fuel in the trunk). I got to talking with some of the guys, they brought up a good point, the exhaust is pointing right at the tank and it's heating the fuel in there and pressurizing it. I got a hold of a set of turn downs and clamps and called another SN driver who told me to unclick the gas cap 1/2 turn. I also redid the tubing for the vent (which is like 9" of tubing that feeds to a hard line that vents into the gas filler door).
The smell is better, but it's still obvious. The director for the weekend had his eyes on me after that and would come and smell my car afterwards, and continued warning me. The other SN driver (who had a similar issue, and still does slightly), told me I need to get the exhaust further away, but I'm wondering if there are other options as well with these cars. I can't find anywhere in this car where it's venting back inside the cabin, I would like the smell gone. After each race, checking the cap it would have some fuel on it (from slosh I guess) but no pressure build up or anything.
Am I at a point where I need to add a canister back into this thing? Or would a new vent for the tank work?
Any thoughts are appreciated, sorry for the wall. I'm trying to give you guys plenty of info.
Last year, I always had a gas smell in the car that would show up after a few laps. I just went with it, assuming it was a weird vent issue. Over the winter I cut off my mufflers (turn downs right before the tank), and welded some resonators on it and didn't have time to put a set of turndowns/dumps back on.
First race of the year was last weekend and I ended up getting a mechanical because the car was spitting fuel on left hand turns (the gas smell was really, really bad and it was pooling fuel in the trunk). I got to talking with some of the guys, they brought up a good point, the exhaust is pointing right at the tank and it's heating the fuel in there and pressurizing it. I got a hold of a set of turn downs and clamps and called another SN driver who told me to unclick the gas cap 1/2 turn. I also redid the tubing for the vent (which is like 9" of tubing that feeds to a hard line that vents into the gas filler door).
The smell is better, but it's still obvious. The director for the weekend had his eyes on me after that and would come and smell my car afterwards, and continued warning me. The other SN driver (who had a similar issue, and still does slightly), told me I need to get the exhaust further away, but I'm wondering if there are other options as well with these cars. I can't find anywhere in this car where it's venting back inside the cabin, I would like the smell gone. After each race, checking the cap it would have some fuel on it (from slosh I guess) but no pressure build up or anything.
Am I at a point where I need to add a canister back into this thing? Or would a new vent for the tank work?
Any thoughts are appreciated, sorry for the wall. I'm trying to give you guys plenty of info.