Jump to content
kenward1000

battery physical height issue

Recommended Posts

So I'm looking for a new battery, after a battery failure.  Was taking R hand corners aggressively then the rubber aftermarket battery hold-down failed, sending the group 24 battery sliding L until the positive terminal welded itself to the polished valve cover.  Instant electrical death, main fuse popped, no smoke or fire.  AAA towed it home but I had to walk as you can't ride in the truck anymore.

Bought a stock battery kit, with the tray and the factory hold-down bracket.  Dead battery current production replacement is now 9", or I'd just get another one. 

Shopping for battery and only finding group 24 batteries that are 9"/228mm in height.  The tallest battery the hold-down bracket will accommodate is 8.25"/210mm.  Group 24 batteries are all acceptable for length and width.

Searched the forums for battery height related posts, found none.

tldr: Looking for a recommendation for a battery that will fit the stock hold-down bracket and battery tray dimensional limitations.

Regards

71 240Z, San Hozay, California

Share this post


Link to post
Share on other sites

17 minutes ago, kenward1000 said:

 the positive terminal welded itself to the polished valve cover. 

Bought a stock battery kit, with the tray and the factory hold-down bracket.

I think we need a picture or two, at least the first one for sure, and maybe some details on where you bought this "kit".  

I've not really seen your problem before so maybe there's simple solution.  But I really want to see a battery welded to a valve cover.  Please.

Share this post


Link to post
Share on other sites

By the way, the stock position for the positive terminal is toward the fender, not toward the engine. I have the stock hold-down and 24 series battery fitting without issues.

Share this post


Link to post
Share on other sites
Posted (edited)

Wow.  I wonder if there's burnt oil on the inside of the valve cover.  Must have got hot.

That kit looks about like the top bracket I had on mine.  Any chance that there's another hole in the firewall for the slotted tang to fit over?  That would determine your upper limit.  Maybe the tray is thicker than stock.  I'm going to guess that that's the issue.  The tray is probably sourced from a non-Nissan supplier.  Find a thinner tray.

Actually, if the bracket fits the correct hole in the firewall then your only major adjustment is the tray.  The top position is fine-tuning within the length of the slot.

If the battery sits on the tray and you can close the hood without interference, then the firewall hole seems like the fix.  You might check the tray first, because the top bracket looks right.

Edited by Zed Head

Share this post


Link to post
Share on other sites

Just a less wordy follow-up.  I remember that the hole for the bracket is kind of tucked up under the lip of the hood seal.  I'll bet a PO made a new, lower, hole for the failed bracket.

Share this post


Link to post
Share on other sites
3 hours ago, SteveJ said:

By the way, the stock position for the positive terminal is toward the fender, not toward the engine. I have the stock hold-down and 24 series battery fitting without issues.

Please tell me the manufacturer and model number of your battery.

Share this post


Link to post
Share on other sites
Posted (edited)

Group 24F is what I’ve always bought. 

https://www.batteryequivalents.com/bci-battery-group-size-chart.html

The stock battery frame internal dimensions are 10-3/8 x 6-15/16.   In my link above that suggests that a 24F is too wide at 10-3/4, and that 24H and T are better at 10-1/4. I’ve never had a problem with a 24F fitting a stock frame, probably a manufacturer specific shape thing, or the max width is at the base, not around the perimeter of the top.

Can’t comment on the correct height, no Z’s in reach at the moment, sorry.

Just spotted a good battery picture in one of the threads here. Kinda shows the stock frame and mounting tab at the firewall.

8B8F63A1-2524-4E14-AB09-45FA8CB07B44.jpeg

Edited by zKars
  • Like 2

Share this post


Link to post
Share on other sites

+1 on the Group 24F choice, a perfect fit for the OE tray, frame and hold-down. The "F" designation swaps the positive terminal to the right and gets it out from under the fender.

Share this post


Link to post
Share on other sites

I've started buying Ever Start batteries from Walmart. $50 plus tax I think, less than $60 I know. Batteries have gone through the roof price wise at least my local Interstate store. 

This is sitting in the original bottom plastic pan? and measures less than 8". FYI only, it's no show car.

20200517_131659.jpg

 

Share this post


Link to post
Share on other sites

I've seen posts about the Walmart EverStart Maxx, however from the Walmart website:

Brand
EverStart Maxx
Manufacturer Part Number
MAXX-24
Assembled Product Weight
44.4 lbs
Assembled Product Dimensions (L x W x H)
10.20 x 6.80 x 8.90 Inches

 

So is the published spec wrong or are the current production batteries now taller than your battery?  Guess I have to go to Walmart and measure one.  Thanks for the picture!

Share this post


Link to post
Share on other sites
1 hour ago, kenward1000 said:

I've seen posts about the Walmart EverStart Maxx, however from the Walmart website:

Brand
EverStart Maxx
Manufacturer Part Number
MAXX-24
Assembled Product Weight
44.4 lbs
Assembled Product Dimensions (L x W x H)
10.20 x 6.80 x 8.90 Inches

 

So is the published spec wrong or are the current production batteries now taller than your battery?  Guess I have to go to Walmart and measure one.  Thanks for the picture!

Mine is the cheaper, less CCA "value". Not the "maxx". I guess that's why it's smaller?

Share this post


Link to post
Share on other sites

Has anyone been successful at finding a battery that fits plus has no vents out the top or out the sides?  I would think the old Datsun sheet metal would like that.

Share this post


Link to post
Share on other sites
Posted (edited)

I make my own hold down brackets.  With a few bucks in metal from HD, and some work, I made this style hold down.  They work great on Optima batteries, but the design can be tweaked to fit most batteries.  I used some velcro as a pad where the bracket touches the battery.  Somewhere on this site I even put a CAD drawing many years ago.

EDIT: Here is the link 

 

 

 

IMG_5679.JPG

IMG_5682.JPG

IMG_0413.jpg

Edited by Jeff G 78
  • Like 2

Share this post


Link to post
Share on other sites

4 hours ago, 87mj said:

Has anyone been successful at finding a battery that fits plus has no vents out the top or out the sides?  I would think the old Datsun sheet metal would like that.

I have been using a DieHard Gold Group 24 battery (same terminal location as OEM) that has top vents but is flat on top and works with the stock cover. Like @Pilgrim mentioned to have no vents you would have to go to a gel battery.

20180901_093704_HDR.jpg

20200517_084737.jpg

  • Like 1

Share this post


Link to post
Share on other sites

I used to swap multiple different batteries into my Z and never had a problem.  I wonder if he installed the tray upside down, or maybe a PO "fixed" a rusted out shelf, too high.  Could happen.  

Share this post


Link to post
Share on other sites
2 hours ago, Jeff G 78 said:

IMG_0413.jpg

1/06.  I hope that's an old picture.  Or maybe you get some serious time from your batteries.  Congratulations.

Share this post


Link to post
Share on other sites
3 minutes ago, Zed Head said:

1/06.  I hope that's an old picture.  Or maybe you get some serious time from your batteries.  Congratulations.

LOL.  The pic was taken in mid-2006

Share this post


Link to post
Share on other sites

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now

×
×
  • Create New...

Important Information

By using this site, you agree to our Terms of Use. We have placed cookies on your device to help make this website better. You can adjust your cookie settings, otherwise we'll assume you're okay to continue.