PDA

View Full Version : Fuel cell mounting question



Running
11-08-2006, 09:43 PM
How should we mount the fuel cell? Flush with the bottom of the trunk floor? Or up on the rear shelf and use 4" or so spacers? If we use spacers we can drill fuel line hose ports, otherwise I'll have to cut four mounting pads and a rear exit slot for the line. Any rule's for hight on the cell?

Running
11-08-2006, 09:44 PM
Or flush with the bottom using a slot for the sump and another one for the lines... Picture for reff only, will be turned so sump is towards the rear.

Running
11-08-2006, 10:12 PM
tttt :3gears:

monkeyy337
11-08-2006, 10:52 PM
tttt :3gears:
Is your fuel cell medal or plastic type. Do you want to be NHRA legal? If you want to be NHRA legal I'll give you the rules from the NHRA rule book concerning fuel cells if you want them.

Running
11-09-2006, 12:07 AM
Is your fuel cell medal or plastic type. Do you want to be NHRA legal? If you want to be NHRA legal I'll give you the rules from the NHRA rule book concerning fuel cells if you want them.

Yes on the NHRA legal.. The cell is Jegs brand aluminum with foam on the bottom. The cage will be welded in later this winter using a rear cross bar, 8.5 sec style cage.

Please post the rules as we will be mounting the cell tomorrow! Thanks :TU:

monkeyy337
11-09-2006, 02:36 PM
Yes on the NHRA legal.. The cell is Jegs brand aluminum with foam on the bottom. The cage will be welded in later this winter using a rear cross bar, 8.5 sec style cage.

Please post the rules as we will be mounting the cell tomorrow! Thanks :TU:
All fuel tanks must be isolated from the drivers compartment by a firewall, completely sealed to prevent any fuel from entering the drivers compartment. All fuel tanks must have a pressure cap and be vented outside of the body. When used, fuel cells must have a metal box protecting the part of the fuel cell that is outside of body lines or trunk floor, excluding hose connection area in rear. Non-metallic fuel cells or tanks must be grounded to frams. Also under the heading of general regulations: Bottom of fuel cell must be covered with .024 steel or .032 aluminum sheet metal when fuel cell protrudes through floor. Just to clarify a few points as I see them (if you had the rule book you could figure them out) for your car: (1) If rear seat vertical portion is still in place this does not satisfy rule for isolation from fuel entering drivers compartment. (2) If you mount the fuel cell to the floor of the trunk and the sump area is below the trunk floor you must build/fabricate a metal guard around the area that is below the trunk floor but it can be open in the rear so the fuel line/lines may exit, .024 steel or .032 aluminum accepted. I used aluminum as it was much easier to work with. (3) No need to ground your cell as it is metal (not a bad idea though, I grounded mine to a screw around the cap area then down to the frame. If I can be of any more help just PM me. Good luck! (additionally: I vote to mount the cell to the trunk floor, not the shelf/floor with spacers) this sounds dangerous to me).

GS Kubisch
11-09-2006, 05:52 PM
I also recommend mounting so that the sump does not drop through the floor.
Then you can mount the pump and filter in the trunk which is much cleaner.

Running
11-09-2006, 08:00 PM
I forgot about the sump protruding through the floor needing a "cover".. Thanks for the suggestions. I had a steel plate bent up tonight for the rear seat / trunk fire wall. It is a bit thick @ .038 ish, but it will work. I will be riviting and body seam sealing it. I'll mount the Fuel cell to the trunk floor.

I thought about the pump being in the trunk.... Would it run cooler being under the car? It will have the return style system. I also wasn't sure if NHRA would allow for the pump in the trunk? I should get one ofthose books.

monkeyy337
11-09-2006, 09:15 PM
NHRA rule book states: All fuel tanks, lines, pumps, valves, etc must be outside of the driver's compartment and within the confines of the frame and/or steel body. Looks to me like mounting in the trunk is OK! :TU:

GS Kubisch
11-09-2006, 10:02 PM
Under the rear of the car is a mess after a few passes.
I have my stuff in the trunk,Never a tech problem.

Running
11-10-2006, 01:12 AM
Pump in the trunk it is :TU: I thought it would be easy to work on that way, my buddy said under the car - we have both run into "tech" problems at Martin.

The rear fire wall is 90% done... I love progress.

How about this: I'll mount the cell a few "'s up from the floor using small spacers, this will keep me from cutting the sump section and using just a small slot for the lines to and from...

GS Kubisch
11-10-2006, 05:22 PM
Yes,Mount the cell off the floor enough to clear the sump.
Then just use a bulkhead connector going out to the front of the car for you fuel line.

Eric Schmelzer
12-09-2006, 09:07 PM
I know this post is a little late and is of little help to you, but this how I mounted mine. Greg and I built a frame out of stainless steel to raise the cell up off the floor about 3". We did this to clear the hump in the trunk floor that is there to clear the lines for the stock tank. In doing this it allowed me to mount the pump inside the trunk.

Running
12-10-2006, 08:13 PM
That looks good :pp No problems with tech?

I now have mine mounted right to the floor less small rubber strips under the cell. The rear is cut away enough for the rear fuel lines to exit the trunk, I still have yet to weld the excess shut though...