can you mount a fuel tank or fuel cell in the trunk and still use a mechanical fuel pump????

anyone???????

Sure, it would run OK, but I'd be really nervous about all the gas fumes in the trunk since there's no vapor barrier of any kind (nor a structural seal) between the trunk and the interior. Any fumes in the trunk will make their way to the interior, and a fire would be quite dangerous.

If you block off all potential leaks between the trunk and the interior such that a fire wouldn't move from the trunk and the interior, it might not be too bad.

What if you just vented to the outside via the old fill hole? And fire proofed the trunk with some sort of lining?

<font face="Arial,Verdana" size="2">Originally posted by work in progress:
What if you just vented to the outside via the old fill hole? And fire proofed the trunk with some sort of lining?</font>

That would still scare me. It would need more venting that a fill hole. Boat bilges have vents, but they still have a forced fan exhaust for the fumes.

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That's a good idea- if you added forced venting plus the liner, it might be OK. I forgot that boats have solved this a long time ago!

If you add the vapor liner and forced ventilation, you will probably be safe. Just make sure the trunk and passenger compartment are sealed off from each other. You'll have to get it tight enough that that combustible fumes can't force themselves into the passenger compartment even when the pressure in the back goes up (don't forget the vents behind the door!) from the forced ventilation.