Battery mounted under bumper cover--pics inside--
02-09-2007, 02:32 AM
#1
Battery mounted under bumper cover--pics inside-- I mounted the battery under the bumper today. I was going to get a dry cell battery and mount it upside down but decided not to and got this marine battery just like the one I took out. The only place it would fit was the middle because of the size. a smaller battery would have fit on either side. I had to hit the middle with a hammer to knock down the bubble in the center to make it flat. I got some 3/8" threaded rods they were 3ft each. cost about $11 for everything. I just bent around the shape of the battery. the hardware weighed 1.3lbs to mount the battery.
The reason I wanted it back there was to move the weight further back, not have to use battery box, and support the bumper cover some.
the bumper cover fits just like normal and it does support the bumper cover it is right agaist the back of the license plat pad. and I can zip tie to the rods from the old mounting points from the bottom now.
I tightened everything down and cut the excess threads off.
I will have charging post probley mounted on the inside.
The reason I wanted it back there was to move the weight further back, not have to use battery box, and support the bumper cover some.
the bumper cover fits just like normal and it does support the bumper cover it is right agaist the back of the license plat pad. and I can zip tie to the rods from the old mounting points from the bottom now.
I tightened everything down and cut the excess threads off.
I will have charging post probley mounted on the inside.
Last edited by brandonppr; 02-09-2007 at 03:18 AM.
02-09-2007, 06:51 AM
#2
If you know for sure that your not going to lose the battery going down the road then that looks like a good idea.
Congrats for thinking outside the box. If it works in a few months there will be alot more people with there battery there. Maybe me too
Congrats for thinking outside the box. If it works in a few months there will be alot more people with there battery there. Maybe me too
02-09-2007, 07:30 AM
#3
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thats just wrong in so many way,
from a common sence point, eventually the plastic will wear out and the rods will start eating into the battery and loosen,
if someone runs into you with no real support around it it will create another problem,
if you spin around and hit the wall again another problem,even if you hit it sidewalls the batt can still shift and short out
tech wise its illegal,its supposed to be mounted to the frame in chassis type car or frame structure,which it is not, and supposed to have manditory battery hold down straps,which it does not
but lets over look the safety things for a minute and say you wanted to keep it there i would think you would want some kind of structure around and underneath it, to protect it from all above,and from any debris that might pop up and puncture battery,bob
from a common sence point, eventually the plastic will wear out and the rods will start eating into the battery and loosen,
if someone runs into you with no real support around it it will create another problem,
if you spin around and hit the wall again another problem,even if you hit it sidewalls the batt can still shift and short out
tech wise its illegal,its supposed to be mounted to the frame in chassis type car or frame structure,which it is not, and supposed to have manditory battery hold down straps,which it does not
but lets over look the safety things for a minute and say you wanted to keep it there i would think you would want some kind of structure around and underneath it, to protect it from all above,and from any debris that might pop up and puncture battery,bob
02-09-2007, 08:17 AM
#5
11 Second Club
Looks good Brandon, A little different from how I am doing mine, but not by much. Mine involves Alum. strapping, for more side to side support, and similar all thread rods. I was planning for going to the center of the area myself.
But after reading Bob's post I didn't know it had to mount on the frame, I find this strange since a lot of guys don't mount them to the frame when they put then in the T-top storage well or in the spare tire areas, and they are still legal???
I see no difference putting it in the center of the T-top storage well or putting it on the outside of that same wall? That's why I planned on doing it. Any thought?
But after reading Bob's post I didn't know it had to mount on the frame, I find this strange since a lot of guys don't mount them to the frame when they put then in the T-top storage well or in the spare tire areas, and they are still legal???
I see no difference putting it in the center of the T-top storage well or putting it on the outside of that same wall? That's why I planned on doing it. Any thought?
02-09-2007, 09:32 AM
#7
I agree with Bob, and urge you to rethink mounting it inside the car, for safety's sake.
I'm normally not a safety ****, my car isn't technically legal for the times it runs, but it is safe. I can just think of so many problems having the battery back there.
I'm normally not a safety ****, my car isn't technically legal for the times it runs, but it is safe. I can just think of so many problems having the battery back there.
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02-09-2007, 10:02 AM
#8
11 Second Club
OK somone explain to me why having it there is not safe? At least for a track car...
I understand the way he has it mounted may not have taken all angles of movement into consideration, and it might slide from side to side and ground out or worse come loose, and as bob noted it could rub through the plastic and dig into the battery. But I don't see the safety issue for a non street car to have it mounted there is it was mounted a little more securely?
I understand the way he has it mounted may not have taken all angles of movement into consideration, and it might slide from side to side and ground out or worse come loose, and as bob noted it could rub through the plastic and dig into the battery. But I don't see the safety issue for a non street car to have it mounted there is it was mounted a little more securely?
02-09-2007, 10:05 AM
#9
I thnk its 100x safer OUTside the car then in LOL. A 50 lb battery flying around in the car doesnt sound like a lot of fun 
Lot of dragsters you see have the battery hanging right off the back..
But I would make a little better 'box' or it will eventually wear through the case like bob said, even a couple horizontal ones to keep it from moving side to side. That threded ros id like a file and will eat into the battery in no time so some flat aluminum would probbaly be better.. That metal back there is pretty thick, more so then the t-top well, which isnt really 'legal' either.
Lot of dragsters you see have the battery hanging right off the back..But I would make a little better 'box' or it will eventually wear through the case like bob said, even a couple horizontal ones to keep it from moving side to side. That threded ros id like a file and will eat into the battery in no time so some flat aluminum would probbaly be better.. That metal back there is pretty thick, more so then the t-top well, which isnt really 'legal' either.
02-09-2007, 10:09 AM
#10
Originally Posted by NRC-Motorsports
thats just wrong in so many way,
from a common sence point, eventually the plastic will wear out and the rods will start eating into the battery and loosen,
if someone runs into you with no real support around it it will create another problem,
if you spin around and hit the wall again another problem,even if you hit it sidewalls the batt can still shift and short out
tech wise its illegal,its supposed to be mounted to the frame in chassis type car or frame structure,which it is not, and supposed to have manditory battery hold down straps,which it does not
but lets over look the safety things for a minute and say you wanted to keep it there i would think you would want some kind of structure around and underneath it, to protect it from all above,and from any debris that might pop up and puncture battery,bob
from a common sence point, eventually the plastic will wear out and the rods will start eating into the battery and loosen,
if someone runs into you with no real support around it it will create another problem,
if you spin around and hit the wall again another problem,even if you hit it sidewalls the batt can still shift and short out
tech wise its illegal,its supposed to be mounted to the frame in chassis type car or frame structure,which it is not, and supposed to have manditory battery hold down straps,which it does not
but lets over look the safety things for a minute and say you wanted to keep it there i would think you would want some kind of structure around and underneath it, to protect it from all above,and from any debris that might pop up and puncture battery,bob
It is not street driven so the support is not that important, besides it will have a cage that runs to the very back with a cross bar in the middle.
It has never been mounted to the frame even when it was inside and I went thru tech at a the nhra division finals with out a problem when it was mounted to the inside ttop storage. I have a strap if thats what it takes.
I may put a battery tray instead of the way it is if it does not pass tech. I wasn't going to buy a battery tray and then it not fit back there. So now I know it fits I can go from there.
does anyone have a quote from the rule book, I don't have one but I thought it just had to have 3/8" holding it down?
02-09-2007, 10:15 AM
#11
Originally Posted by cwaldt
If you know for sure that your not going to lose the battery going down the road then that looks like a good idea.
Congrats for thinking outside the box. If it works in a few months there will be alot more people with there battery there. Maybe me too
Congrats for thinking outside the box. If it works in a few months there will be alot more people with there battery there. Maybe me too
02-09-2007, 10:19 AM
#12
Originally Posted by 1SlowFormula
OK somone explain to me why having it there is not safe? At least for a track car...
I understand the way he has it mounted may not have taken all angles of movement into consideration, and it might slide from side to side and ground out or worse come loose, and as bob noted it could rub through the plastic and dig into the battery. But I don't see the safety issue for a non street car to have it mounted there is it was mounted a little more securely?
I understand the way he has it mounted may not have taken all angles of movement into consideration, and it might slide from side to side and ground out or worse come loose, and as bob noted it could rub through the plastic and dig into the battery. But I don't see the safety issue for a non street car to have it mounted there is it was mounted a little more securely?
Also if it were a smaller battery it would fit at the end of the frame rails where the bumper mounts are.
02-09-2007, 10:32 AM
#14
I found this.
http://www.nedra.com/rulebook.html#8_1
also:
NHRA Rule Book:
Batteries may not be relocated into the drivers or passengers compartment. Rear firewall of .024 inch steel or .032 inch aluminun (including package tray) required when battery is relocated in trunk. In lieu of rear firewall, battery may be located in a sealed .024 inch steel box box, or .032 inch aluminum or NHRA accepted poly box. If sealed box is used in lieu of rear firewall, box may not be used to secure battery and must be vented outside the body. Relocated battery must be fastened to frame or frame structure with minimum of two 3/8 inch diameter bolts. (no "J" hooks) Metal battery hold down straps maditory. Strapping tape prohibited.
is that area not considered "frame structure"
http://www.nedra.com/rulebook.html#8_1
also:
NHRA Rule Book:
Batteries may not be relocated into the drivers or passengers compartment. Rear firewall of .024 inch steel or .032 inch aluminun (including package tray) required when battery is relocated in trunk. In lieu of rear firewall, battery may be located in a sealed .024 inch steel box box, or .032 inch aluminum or NHRA accepted poly box. If sealed box is used in lieu of rear firewall, box may not be used to secure battery and must be vented outside the body. Relocated battery must be fastened to frame or frame structure with minimum of two 3/8 inch diameter bolts. (no "J" hooks) Metal battery hold down straps maditory. Strapping tape prohibited.
is that area not considered "frame structure"
Last edited by brandonppr; 02-09-2007 at 10:43 AM.
02-09-2007, 11:34 AM
#15
that ares is not considered the frame rail. the metsl next to the spare tire ares towards the center, that is frame. If you want to relocate the battery, you need to have a box mounted to that, or on the drivers side if you prefer. Moroso also makes a plastic box that is NHRA approved too, it's the only one that is.
I am not personally putting the battery in the trunk until I absolutely have to, I'll stick with my PC680 on the factory battery tray until that day comes. (required shutoff for 9.99 or quicker, in that case the battery will go back there, mine as well with all the wires that have to go there for the shutoff)
I am not personally putting the battery in the trunk until I absolutely have to, I'll stick with my PC680 on the factory battery tray until that day comes. (required shutoff for 9.99 or quicker, in that case the battery will go back there, mine as well with all the wires that have to go there for the shutoff)
02-10-2007, 10:18 AM
#16
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Originally Posted by JL ws-6
that ares is not considered the frame rail. the metsl next to the spare tire ares towards the center, that is frame. If you want to relocate the battery, you need to have a box mounted to that, or on the drivers side if you prefer. Moroso also makes a plastic box that is NHRA approved too, it's the only one that is.
I am not personally putting the battery in the trunk until I absolutely have to, I'll stick with my PC680 on the factory battery tray until that day comes. (required shutoff for 9.99 or quicker, in that case the battery will go back there, mine as well with all the wires that have to go there for the shutoff)
I am not personally putting the battery in the trunk until I absolutely have to, I'll stick with my PC680 on the factory battery tray until that day comes. (required shutoff for 9.99 or quicker, in that case the battery will go back there, mine as well with all the wires that have to go there for the shutoff)
Shane
02-10-2007, 10:32 AM
#17
The roll cage is coming back there and will have a cross bar at the very back. would tieing it into the cage count as frame support?
The rule says it has to support 6 times the wieght of the battery from side to side movement. The way it is it will support more than 6 times it weight without moving from side to side witch is 60lbs x6 = 360lbs.
I could have mounted it at the end of the frame rail if I had a smaller battery.
I do plan on changing the way its mounted though but I am going to leave it in the middle.
The rule says it has to support 6 times the wieght of the battery from side to side movement. The way it is it will support more than 6 times it weight without moving from side to side witch is 60lbs x6 = 360lbs.
I could have mounted it at the end of the frame rail if I had a smaller battery.
I do plan on changing the way its mounted though but I am going to leave it in the middle.
02-10-2007, 10:39 AM
#18
If you really feel that you need to put the battery back there I would suggest building a support that ties into the bumper mounts. That way it would technically be legal. In a door car it is probably a bad idea putting that much weight that far back in the car. If you decide to keep it there you need to run wheelie bars or you stand the chance of killing the battery if you wheel stand.
Good Luck,
Daren
Good Luck,
Daren
02-10-2007, 11:22 AM
#20
you put a smaller battery way in the back of the car, and it won't have enough power to crank the car over.
This has been covered alot... I don't know what kind of band aid you are trying to do by putting the battery that far back, but whatever it is, it can be fixed with suspension work, you don't have to put the battery under the bumper cover.
if the weight back there is gonna help, put the battery in teh trunk mounted legally, and put the rear bumper support back in.
This has been covered alot... I don't know what kind of band aid you are trying to do by putting the battery that far back, but whatever it is, it can be fixed with suspension work, you don't have to put the battery under the bumper cover.
if the weight back there is gonna help, put the battery in teh trunk mounted legally, and put the rear bumper support back in.
