Pennock's Fiero Forum
  Technical Discussion & Questions
  Relocated battery under headlight

Post New Topic  Post A Reply
Email This Page to Someone! | Printable Version


next newest topic | next oldest topic
Relocated battery under headlight by GTFiero1
Started on: 05-16-2020 03:28 PM
Replies: 13 (309 views)
Last post by: theogre on 05-28-2020 12:10 PM
GTFiero1
Member
Posts: 6501
From: Camden County NJ
Registered: Sep 2001


Feedback score: (1)
Leave feedback





Total ratings: 109
Rate this member

Report this Post05-16-2020 03:28 PM Click Here to See the Profile for GTFiero1Click Here to Email GTFiero1Send a Private Message to GTFiero1Edit/Delete MessageReply w/QuoteDirect Link to This Post
Figured I share my battery relocation. Wanting preserve as much room in front compartment as I could, i wondered if anyone put their battery in the empty area under headlight/in bumper. Did a search here and low and behold, I found and old thread where FieroGuru had done just that. I based basic tray off his design and went from there.

Tray is 16ga steel, hold down 1/8 x 1.5 plate. Cut out sheet metal under headlight and fitted tray to be spot welded in the rear, and welded along edge up front as lip was thin. Hold down bolts to frame and J hook to tray itself. Small tab on bottom for nose support. Drilled out the old horn mount hole and welded an M10 nut that will serve as the grounding lug for the battery. Positive will have a 200a breaker right off the terminal



------------------


--Adam-- ASE Certified Technician

[This message has been edited by GTFiero1 (edited 05-16-2020).]

IP: Logged
PFF
System Bot
GTFiero1
Member
Posts: 6501
From: Camden County NJ
Registered: Sep 2001


Feedback score: (1)
Leave feedback





Total ratings: 109
Rate this member

Report this Post05-16-2020 03:37 PM Click Here to See the Profile for GTFiero1Click Here to Email GTFiero1Send a Private Message to GTFiero1Edit/Delete MessageReply w/QuoteDirect Link to This Post
Couple pictures didnt upload right




[This message has been edited by GTFiero1 (edited 05-16-2020).]

IP: Logged
Spoon
Member
Posts: 3399
From: Sadsburyville, PA. 19369 / USA
Registered: May 2004


Feedback score:    (16)
Leave feedback





Total ratings: 59
Rate this member

Report this Post05-19-2020 08:46 PM Click Here to See the Profile for SpoonSend a Private Message to SpoonEdit/Delete MessageReply w/QuoteDirect Link to This Post
Nice job. I did mine about a year ago using aluminum plate. Took pics but don't recall posting anything.

Spoon

------------------
"Kilgore Trout once wrote a short story which was a dialogue between two pieces of yeast. They were discussing the possible purposes of life as they ate sugar and suffocated in their own excrement. Because of their limited intelligence, they never came close to guessing that they were making champagne." - Kurt Vonnegut

IP: Logged
longjonsilver
Member
Posts: 858
From: Lower Sackville, Nova Scotia
Registered: Nov 2001


Feedback score: N/A
Leave feedback

Rate this member

Report this Post05-21-2020 11:02 AM Click Here to See the Profile for longjonsilverClick Here to visit longjonsilver's HomePageClick Here to Email longjonsilverSend a Private Message to longjonsilverEdit/Delete MessageReply w/QuoteDirect Link to This Post
i did mine under the headlight and i love how Freya handles then, and that is in comparison to the battery in the spare tire!

Here is my thread:

http://www.fiero.nl/forum/F...1/HTML/098244-2.html

i got the idea from Lunatic:

http://www.fiero.nl/forum/F...3/HTML/000148-3.html

jon

------------------
Astronomy says we will find a coded signal from outer space. Then we'll KNOW that life exists there, for coded signals aren't by chance.

Biology says there are coded genetic signals in every cell, but we KNOW that no intelligence created life.

I'm the original owner of a white ' 84 2M4 purchased Dec 10, 1983 from Pontiac. Always garaged, no rust, 4-wheel drifts are fun!

IP: Logged
fieroguru
Member
Posts: 11164
From: Champaign, IL
Registered: Aug 2003


Feedback score:    (45)
Leave feedback





Total ratings: 255
Rate this member

Report this Post05-21-2020 07:39 PM Click Here to See the Profile for fieroguruSend a Private Message to fieroguruEdit/Delete MessageReply w/QuoteDirect Link to This Post
Thanks for the shoutout! I was going to say that looked awful familiar! From back in 2008:
http://www.fiero.nl/forum/A...090907-2-093154.html

In 2012 When I built my LS4/F40 car I went a different path. I switched to a small dyna-batt battery and made a try that fit under the sheet metal. Less weight, no trimming of chassis sheet metal required.

 
quote
Originally posted by fieroguru:
Then I worked on the battery mount. I fabbed up these brackets to hold the battery, but ended up unbending one of the bolted flanges.



The battery is now mounted under the passenger head light, but the only modification to the sheet metal in that area was to drill seven 1/4" holes and remove the protruding flange from the 1" diameter drain hole on the bottom side. In the first picture you can see that the battery easily clears the bottom of the 88 coupe fascia (notice the 2 bolt air ducting bracket on the other side of the battery).


The mounting bracket holds the battery firm in 3 directions and the batter hold down tab secures it in the 4th direction.



IP: Logged
Mike in Sydney
Member
Posts: 157
From: Meadow Flat, NSW, Australia
Registered: Sep 2011


Feedback score: N/A
Leave feedback

Rate this member

Report this Post05-21-2020 08:19 PM Click Here to See the Profile for Mike in SydneySend a Private Message to Mike in SydneyEdit/Delete MessageReply w/QuoteDirect Link to This Post
Interesting project. I've seen battery relocation into the front compartment under the spare but this is the first I've seen off center. A couple of questions for you: 1) What's the advantage in relocating the battery to the front of the car? Do you notice any handling or ride issues with the additional weight of the battery so close to the front wheel? 2) What gauge wire do you use for the increased length of the battery leads?

------------------
Mike in Sydney

IP: Logged
CDM
Junior Member
Posts: 7
From: San Diego, CA
Registered: Nov 2019


Feedback score: N/A
Leave feedback

Rate this member

Report this Post05-26-2020 04:30 PM Click Here to See the Profile for CDMClick Here to Email CDMSend a Private Message to CDMEdit/Delete MessageReply w/QuoteDirect Link to This Post
@Fiero Guru

Can you give a little info on the BAT (battery) you have.
Positives an Negatives,

I read on the site it has 15hrs of energy, what does this mean.
Do I have to disconnect it when not in use, my fiero is rarely use, but if i fo out for a a weekend.
Should I have it on a constant trickler when in the garage?

Thank you in advance : )
IP: Logged
Patrick
Member
Posts: 29665
From: Vancouver, British Columbia, Canada
Registered: Apr 99


Feedback score: (1)
Leave feedback





Total ratings: 439
Rate this member

Report this Post05-26-2020 04:59 PM Click Here to See the Profile for PatrickClick Here to Email PatrickSend a Private Message to PatrickEdit/Delete MessageReply w/QuoteDirect Link to This Post
 
quote
Originally posted by longjonsilver:

i did mine under the headlight and i love how Freya handles then, and that is in comparison to the battery in the spare tire!


There is absolutely no way that installing a regular sized battery at the corner of a car is going to improve handling compared to having it mounted low and centrally.
IP: Logged
theogre
Member
Posts: 28966
From: USA
Registered: Mar 99


Feedback score: N/A
Leave feedback





Total ratings: 548
Rate this member

Report this Post05-26-2020 08:02 PM Click Here to See the Profile for theogreClick Here to visit theogre's HomePageSend a Private Message to theogreEdit/Delete MessageReply w/QuoteDirect Link to This Post
 
quote
Originally posted by CDM:
@Fiero Guru

Can you give a little info on the BAT (battery) you have.
Positives an Negatives,

I read on the site it has 15hrs of energy, what does this mean.
Do I have to disconnect it when not in use, my fiero is rarely use, but if i fo out for a a weekend.
Should I have it on a constant trickler when in the garage?

Thank you in advance : )
Dyna-batt is a relabeled/re-badged Motorcycle battery w/ high price really made by www.odysseybattery.com and Not made to start or run a car.
While fieroguru and few others likes/loves them, many have problems for many reasons.
Search archives here and internet.

------------------
Dr. Ian Malcolm: Yeah, but your scientists were so preoccupied with whether or not they could, they didn't stop to think if they should.
(Jurassic Park)


The Ogre's Fiero Cave

IP: Logged
CDM
Junior Member
Posts: 7
From: San Diego, CA
Registered: Nov 2019


Feedback score: N/A
Leave feedback

Rate this member

Report this Post05-26-2020 11:07 PM Click Here to See the Profile for CDMClick Here to Email CDMSend a Private Message to CDMEdit/Delete MessageReply w/QuoteDirect Link to This Post
Thank you Ogre


 
quote
Originally posted by theogre:

[QUOTE]Originally posted by CDM:
@Fiero Guru

Can you give a little info on the BAT (battery) you have.
Positives an Negatives,

I read on the site it has 15hrs of energy, what does this mean.
Do I have to disconnect it when not in use, my fiero is rarely use, but if i fo out for a a weekend.
Should I have it on a constant trickler when in the garage?

Thank you in advance : )
Dyna-batt is a relabeled/re-badged Motorcycle battery w/ high price really made by www.odysseybattery.com and Not made to start or run a car.
While fieroguru and few others likes/loves them, many have problems for many reasons.
Search archives here and internet.


[/QUOTE]

IP: Logged
fieroguru
Member
Posts: 11164
From: Champaign, IL
Registered: Aug 2003


Feedback score:    (45)
Leave feedback





Total ratings: 255
Rate this member

Report this Post05-27-2020 08:48 AM Click Here to See the Profile for fieroguruSend a Private Message to fieroguruEdit/Delete MessageReply w/QuoteDirect Link to This Post
 
quote
Originally posted by CDM:

@Fiero Guru

Can you give a little info on the BAT (battery) you have.
Positives an Negatives,

I read on the site it has 15hrs of energy, what does this mean.
Do I have to disconnect it when not in use, my fiero is rarely use, but if i fo out for a a weekend.
Should I have it on a constant trickler when in the garage?

Thank you in advance : )


I have ran the Dyna-Batt for 6+ years. It easily cranked over by LS4/F40 swap even when I left the car parked outside over winter for a month or two between starts. My car is a 3 season driver so while it would sit for a month or two in the winter, I never put it on a trickle charger, nor was there ever a need to.

These smaller batteries do not have the reserve capacity of a larger one, but as long as the car starts with the first 5 tries (if it doesn't, fix those issues) and your car doesn't have an electrical drain (like from a security system), it will start your car when needed. What it won't do is allow you to run accessories with the engine off as long as a full-size battery. So if you make it a habit of leaving your lights on when you park your car, or listening to the radio while the car is parked, that will result in a dead battery sooner.

If you store your car for months, or you have to run a trickle charger to keep a full-size battery charged between starts, you will likely have more issues with Dyna-Batt than I have.

As with any modification, go into it eyes wide open. Understand the benefits and compromises and pick your path. I am going to stick with the Dyna-Batt.

IP: Logged
PFF
System Bot
Will
Member
Posts: 13234
From: Where you least expect me
Registered: Jun 2000


Feedback score: (1)
Leave feedback





Total ratings: 234
Rate this member

Report this Post05-27-2020 09:31 AM Click Here to See the Profile for WillClick Here to Email WillSend a Private Message to WillEdit/Delete MessageReply w/QuoteDirect Link to This Post
 
quote
Originally posted by Patrick:

There is absolutely no way that installing a regular sized battery at the corner of a car is going to improve handling compared to having it mounted low and centrally.


Right. The entire point of putting the engine in the middle is to collect the car's major masses into as small a footprint as possible. Moving the battery forward works against the reason the car is mid engine in the first place. Moving the battery also adds a bunch of copper to the car, and copper is heavy.

I think straight down from the stock location is about the best place in a Fiero to mount the battery... That keeps it as close as feasible to the engine for short cable runs, as close as practical to the car's CG without mounting it in the passenger compartment and puts it as low as possible in the car. I haven't done one like this, but the mini-battery shown above is especially well suited for that.

[This message has been edited by Will (edited 05-27-2020).]

IP: Logged
GTFiero1
Member
Posts: 6501
From: Camden County NJ
Registered: Sep 2001


Feedback score: (1)
Leave feedback





Total ratings: 109
Rate this member

Report this Post05-28-2020 11:38 AM Click Here to See the Profile for GTFiero1Click Here to Email GTFiero1Send a Private Message to GTFiero1Edit/Delete MessageReply w/QuoteDirect Link to This Post
 
quote
Originally posted by Mike in Sydney:

Interesting project. I've seen battery relocation into the front compartment under the spare but this is the first I've seen off center. A couple of questions for you: 1) What's the advantage in relocating the battery to the front of the car? Do you notice any handling or ride issues with the additional weight of the battery so close to the front wheel? 2) What gauge wire do you use for the increased length of the battery leads?




If I was actively autocrossing maybe I would keep it in spare tire compartment more centrally located. When this car is done it will see probably 90%+ normal/leisure driving (which is probably most fieros) to which the weight location will make no real difference.

I'll use 0 gauge cable (welding cable) to run to the back. Power only, as ground will be short right to that lug I welded to chassis. Using 200a breaker right off terminal for safety. Engine will have multiple ground straps to chassis.
IP: Logged
theogre
Member
Posts: 28966
From: USA
Registered: Mar 99


Feedback score: N/A
Leave feedback





Total ratings: 548
Rate this member

Report this Post05-28-2020 12:10 PM Click Here to See the Profile for theogreClick Here to visit theogre's HomePageSend a Private Message to theogreEdit/Delete MessageReply w/QuoteDirect Link to This Post
 
quote
Originally posted by GTFiero1:
I'll use 0 gauge cable (welding cable) to run to the back. Power only, as ground will be short right to that lug I welded to chassis. Using 200a breaker right off terminal for safety. Engine will have multiple ground straps to chassis.
Using Car's frame as return ground from engine causes many problems. Far easier and worse if just 1 joint is dirty or loose.

Every joint adds resistance even when good sucking power creating lower volts to everything is bad.
Example: See my Cave, Electric Motors
But can be far worse...

Worse? How?
Like Iffy ground(s) can try to make coolant system to be a ground wrecking everything. Even rubber hoses. Coolant is good at conducting electric but will eat anything doing so. Even anti-rust chems in coolant wears out very fast when you have ground problems.
More so every time you start the engine as 1.5kw starter pulls ~ 120 amps just to run, inrush can be 200 to 300+ amps when first turn the key. Many have "upgraded" to 1.7kw starter that uses ~ 135 amps to run and higher inrush.
IP: Logged

next newest topic | next oldest topic

All times are ET (US)

Post New Topic  Post A Reply
Hop to:

Contact Us | Back To Main Page

Advertizing on PFF | Fiero Parts Vendors
PFF Merchandise | Fiero Gallery | Ogre's Cave
Real-Time Chat | Fiero Related Auctions on eBay



Copyright (c) 1999, C. Pennock