SN95 gas tank

[centerville]

2003 Cobra tank is the way to go...but is VERY expensive...or was. best baffle on the planet when used with the proper fuel pump canister. used to run mine down to 1.5 gallons or less before starvation but it also had two pumps in it to suck up every last drop.

Granted, I had nearly $1k in the tank/pumps but that was 10 years ago.

This. I just ran mine down to 1.75 gallons and had no starvation issues. Mine is still stock. Maybe this is a good replacement. http://www.on3performance.com/shop/o...fled-gas-tank/

[michaelmosty]

Al, there is nothing specifically noted in the CMC rules about running an aftermarket tank like this one in the previous post. Is this something that would be good to run in CMC?

[Al Fernandez]

Reading the CMC rules...
The 2003 Cobra is not an allowed car, which means its parts that are different than the allowed 2003 models are not allowed, unless explicitly allowed elsewhere in the rules. Replacement parts must not offer a performance improvement over the OE. No fuel tank modifications other than going full fuel cell are allowed. The sum total of those rules means that aftermarket tank and pump assembly are not legal. Not saying that it shouldn't be considered, but per todays rules I would say they are not allowed so would require a rules change.

[ShadowBolt]

Reading the CMC rules...
The 2003 Cobra is not an allowed car, which means its parts that are different than the allowed 2003 models are not allowed, unless explicitly allowed elsewhere in the rules. Replacement parts must not offer a performance improvement over the OE. No fuel tank modifications other than going full fuel cell are allowed. The sum total of those rules means that aftermarket tank and pump assembly are not legal. Not saying that it shouldn't be considered, but per todays rules I would say they are not allowed so would require a rules change.

How do you enforce this? Looks to me that this tank is exactly the same as a stock tank looking at the outside.


JJ

[Sook]

Reading the CMC rules...
The 2003 Cobra is not an allowed car, which means its parts that are different than the allowed 2003 models are not allowed, unless explicitly allowed elsewhere in the rules. Replacement parts must not offer a performance improvement over the OE. No fuel tank modifications other than going full fuel cell are allowed. The sum total of those rules means that aftermarket tank and pump assembly are not legal. Not saying that it shouldn't be considered, but per todays rules I would say they are not allowed so would require a rules change.

By this logic I take it an 03 Cobra steering rack isn't allowed either, asking for a friend.

- Josh

[mach1]

By this logic I take it an 03 Cobra steering rack isn't allowed either, asking for a friend.

- Josh

And 03 cobra control arms, and....

[Al Fernandez]

If a Cobra steering rack is the same as a GT steering rack then its fine. If a Cobra steering rack is 2 turns lock to lock and a GT rack is 3.8 then its not fine. Its not whether it came in a cobra rather whether its the same as what was in the GT.

Ah enforcement is an entirely different problem. We've never done this, but one could just go up to a car post race and start pouring fuel into it and see how much it takes. Pretty easy to tell if the car is capable of running close to empty or not. For that matter, this tank is just one solution. You could arrive at a similar place simply stuffing fuel insoluble things into the tank. Or so I've heard.

[RichardP]

If a Cobra steering rack is the same as a GT steering rack then its fine. If a Cobra steering rack is 2 turns lock to lock and a GT rack is 3.8 then its not fine. Its not whether it came in a cobra rather whether its the same as what was in the GT.

The racks are different but it would be impossible to tell visually or by turning it lock to lock. The Cobra rack has a stiffer T-bar for reduced power assist. In theory, it has a better, more performance oriented feel. This assumes, of course, that you bought a good factory rack that specifically came off of a cobra. If you bought a remanufactured rack, there is no telling what you have. I've bought the "correct" rack and found it did have the different steering ratio from the 4 cylinder model. You could buy a GT version and get a Cobra version without knowing it (way less likely).

Ah enforcement is an entirely different problem. We've never done this, but one could just go up to a car post race and start pouring fuel into it and see how much it takes. Pretty easy to tell if the car is capable of running close to empty or not. For that matter, this tank is just one solution. You could arrive at a similar place simply stuffing fuel insoluble things into the tank. Or so I've heard.

The factory tank works just fine down to empty. But most factory tanks at this point have had the baffle inside of the tank break loose. Replacement tanks are cheap but don't work much below half full. Some people, even those with still functioning factory tanks, use fuel as ballast. Your method of checking legality makes absolutely no sense.

The Cobra tank is a legal outside stamping with different baffling inside. The Cobra pump assembly uses two pumps which isn't legal. I don't see it as a legal setup for a CMC car. I also don't see it as a performance benefit over a factory fox tank. I do see it as a possible performance benefit over the crap that you can actually buy to keep your ancient fox running.


Richard P.