Autocross Fuel Cell Install

[Steve Parmley]

I am just finishing my offset 3 gallon "fuel cell" and Design Products (old Tilton style) camber plates installation. If I can figure out enough insulation I will be moving the muffler to that side too to help offset my fat a**.

[jmortensen]

It's so CUTE! Looks good. Plenty strong for the 20 lbs of gas you'll get in there.

Moving the muffler is not a bad idea...

[John Coffey]

Think rear diffuser before moving anything else around back there.

[theianmonster]

I don't know about cute, but it looks good, haha.

[Steve Parmley]

It has an Earls filter-pump and Fram filter all on it as a unit so it is heavier than it looks in the photo. I was going to hang the muffler off of it too. Diffusers aren't allowed in FP or XP. I posted a picture of Darius's diffuser on SCCA forums.com and everyone seemed to think no way. I am thinking of a Scirroco radiator in the rear though which is allowed in both FP and XP. Hmmm, if I tilt the radiator at 7 degrees like John did with his fuel cell........

[John Coffey]

A diffuser isn't allowed in ITS either, but Keith Thomas built one pretty much the way I did with a 7 degree rise on the bottom of the fuel cell. I put the muffler on one side of the cell and a flat fuel pump/filter mounting plate on the other. Worked pretty well. The 7 degree rise on the fuel cell was to make sure it meet the SCCA 6" ground clearance rule.

[Steve Parmley]

I made the fuel cell unit to sit on top of its mounts so I could add spacers for the 6 inch clearance rule. I am trying 23.5 diameter tires and 25 inch diameter tires in the rear. It is set up at 6 inches for the 25 and can be spaced for the 23.5.

Maybe a sheet of aluminum set at 7 degrees to "route" the exiting radiator air.

[jmortensen]

Why the radiator in back? I'm guessing it's to move weight rearward, but by the time you run tubes back and forth aren't you adding a bunch more weight? Maybe you're underweight and it doesn't matter. Anyway, just curious...

[Steve Parmley]

Yes to move weight to the back. If I run FP I am under weight and you can't set the engine back. Here is a picture of Jesus Villalreal's 400hp V6 Camaro and his radiator air inlet in the side window

[Steve Parmley]

Here is a photo by Mark Mervich on baautox.com of the car at the Atwater National Tour.

[tube80z]

Why the radiator in back? I'm guessing it's to move weight rearward, but by the time you run tubes back and forth aren't you adding a bunch more weight? Maybe you're underweight and it doesn't matter. Anyway, just curious...

For autox any weight you can remove off the nose and towards the back will help the car rotate quicker. I'd move the alternator to the back if you're going to run one.

Cary

[MikeW]

I'd move the alternator to the back if you're going to run one.

How do you move the alternator to the back? What drives it?