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battery next to fuel tank in rear?
Mave - 3/1/09 at 05:25 PM

Just wondering; would it be a bad idea to place the battery next to the fuel tank in the rear of the car? I can seperate them by a 1 inch "wall" if needed.
My motivation would be; it's good for weight distribution, and cleans up the area in front of the scuttle. And I do have space next to the tank.
But obviously; what would happen in a rear end crash? Is it extra dangerous to have the two together? Can image it is, but would like confirmation from someone who knows....


tomgregory2000 - 3/1/09 at 05:29 PM

old lotus 7's did that and BMW's with a straight 6 in have them in the boot as well

[Edited on 3/1/09 by tomgregory2000]


Canada EH! - 3/1/09 at 05:32 PM

Depends on the tank and the battery case, I had a 8 gallon fuel cell mounted next to a Skidoo battery in a metal case in the trunk of my Datsun 1200 race car, flipped it several times at 120MPH, major impact right rear corner were the battery was. Repaired the car and finished third in Canadian Road Race of Champions two hours later.


24vseven - 3/1/09 at 05:41 PM

lots of group 4 mk2 escorts have the batery near the tank (inc mine)


Ivan - 3/1/09 at 05:48 PM

If I'm not mistaken -

Battery Acid + Petrol = Bang

So make sure you have proper fuel cell.


afj - 3/1/09 at 06:01 PM

old minis only about a foot apart


rusty nuts - 3/1/09 at 06:12 PM

quote:
Originally posted by afj
old minis only about a foot apart


Only with twin tanks, then there less than a foot apart.
. Just a thought how many modern cars have the battery as close to the tank? BMWs etc tend to have the battery in the inner wing and the tanks are normally under the car. IMHO the passengers foot well may be better?


repper - 3/1/09 at 06:57 PM

hi i dont no how much room you have on your car but ive put mine in the pasanger foot well to keep it low and the weight in the center off the car


speedyxjs - 3/1/09 at 07:14 PM

My Jags both have them in the boot. I have heard of locosters putting the battery in the rear inside an aluminium box. Thats probably what i will do to help with weight distribution


Macbeast - 3/1/09 at 07:38 PM

MGBs had them mounted close to the petrol tank and I've seen a Mercedes with battery under the rear passenger seat.


chrisg - 3/1/09 at 08:07 PM

This

Would indicate that the presence of acid would not be a factor in causing an explosion or worsening the effects of any petrol spill, other than the possibility of sparking.

Cheers

Chris

[Edited on 3/1/09 by chrisg]


02GF74 - 4/1/09 at 07:32 PM

quote:
Originally posted by Ivan
If I'm not mistaken -

Battery Acid + Petrol = Bang




eh?

my A-level chemistry is way in the distant past but I'd be most surprised if battery acid - mostly water with some sulphuric acid mixed in an any hydrocarbon would react so violently as to combust. It would be a terrorist's dream come true if it did.