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View Full Version : Had the Cobra at VIR, had minor issues


jeffcobra
05-29-2012, 10:55 PM
Well, I had the Cobra at VIR all weekend, it was awesome. I was running in the green group and had some issues with the car. The car would puke fuel from the gas cap after it had been run all day and the fuel was getting low in the tank. I have come to find out this is a common problem that I will need to come up with a fix for. I removed the charcoal canister at the track because it was full of fuel. I thought it was block and causing the problem. That didn't fix it because Sunday the last run I was black flagged for the same thing. That was a good thing because Tony noticed I had a tire going down when I pulled into the pit ( THANK YOU TONY !!!) I was just going to fill the tank and go back out because the pressure in the tank doesn't build when it's full. Something very bad could of happened if no one noticed the tire.

The other problem is the car engine temp getting about 3/4 of the way up on the factory gauge. It never went higher than that. I did some things at the track to help get air in and out of the engine bay. I removed the hood blanket, removed the plastic cowl cover that separates the engine bay from the cowl. This seemed to help a little but I need a permanent solution. Its only going to get hotter this summer. Would a colder thermostat help or do I just need a bigger radiator? I only plan a few bolt engine mods in the future so I don't plan on making big power.

cobrabitn
05-29-2012, 11:42 PM
Jeff,

Here's what you need to help alleviate some of your problems.

1. Get an aftermarket radiator like Griffin Racing Radiator or Fluidyne. I had a Fluidyne n mine.

2. 180 degree thermostat and have your high speed fan turn on at 185 degrees. I did this with a chip on my 94.

3. Water Wetter - it works and my temps stayed down almost all the time. My gauge would go up 3/4 of the way on a very very hot day but when I slowed down, it dropped to 1/4 of the way or less. As long as the needle is not in the red, you are okay. So anything that is in the NORMAL range is okay.

4. Fuel Puke - this is a tough one but I did at least control it a lot more. Wrap the tailpipes like what was on my 94. Just some exhaust wrap will help stop the tank from getting the heat from the pipes.

5. Change or replace the valve on the tank. You did not have to remove the vapor canister and I'd probably just put it back on.

6. Increase the hose size for the vapors - this helped a lot.

I do not know if Daniel had the fuel puke situation but I know in cool weather, I didn't have any.

7. Don't let the tank drop below a half and that will stop it all together.

FTGT101
05-30-2012, 01:53 AM
It never spit out any fuel Tony and we ran from a full Tank to empty. Having said that the cap had alot of pressure on it, but never lost any fuel that I am aware of.