Battery in the trunk - Page 2 - Alfa Romeo Bulletin Board & Forums
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post #16 of 38 (permalink) Old 09-05-2010, 02:35 AM
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Do you know the size? Matt


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GTV 2000 - 1972 - Slow progress but now prepping engine bay for mods before paint....
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post #17 of 38 (permalink) Old 09-05-2010, 02:43 AM Thread Starter
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ODYSSEY Batteries - Official Manufacturer's Site

Goto the source my friend - all their tech spechs will be there
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post #18 of 38 (permalink) Old 09-05-2010, 02:57 AM
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Interestingly they recommend a PC1500 for my 2000GTV .....


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GTV 2000 - 1972 - Slow progress but now prepping engine bay for mods before paint....
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post #19 of 38 (permalink) Old 09-05-2010, 03:47 AM Thread Starter
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Yes, I think that is way too big and unnecessary but I'm no expert - many people seem to recommend the Odessey PC 680
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post #20 of 38 (permalink) Old 09-05-2010, 03:57 AM
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Keep us posted if you get one. Be interested if it turns the engine over well.


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post #21 of 38 (permalink) Old 09-05-2010, 05:33 AM
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I have been looking at moving my battery to the trunk/boot .

What I would like to know is what size of cable Alfa used to go all the way to the starter ?

And also where and how is the negative connection made. Getting a really good ground may be a hard thing to do on an older car. I think welding a stud in would be the best but not so good for the paint in the area.

The best thing I have found for now is called an elevator bolt.
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I would drill a hole clean off the paint to bear metal put one of these bolts in and paint over it.


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[SIZE="2"]David Munro[/SIZE]
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1969 Spider JR Twin Spark
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post #22 of 38 (permalink) Old 09-05-2010, 05:41 AM Thread Starter
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Red face

I purchased 1-gauge although this is probably over kill, 2-gauge would probably do fine and there are forumla that can be used to decide on the appropriate thickness. Many people just use welding cable, but whatever you do use you do need to choose something a little thicker than normal to make up for the extra resistence encountered with a longer cable. i hadnt given thought to how I would arrange my earth but your suggestion looks interesting.

We do need to use some kind of fuse as well to prevent fire - had you given thought to the kind of fuse/circuit breaker that you were going to use????Interested in your thoughts...

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post #23 of 38 (permalink) Old 09-05-2010, 05:55 AM Thread Starter
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post #24 of 38 (permalink) Old 09-05-2010, 06:11 AM
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A fuse is not a bad idea but it would have to be a very large amperage . Starters pull a lot of amps . I have a clamp-on amp meter I will see what mine shows.

On the other side I have heard of rear battery cables being damaged on lifts and the like. Happened to someone I know recently . No damage to the car or him just a nick in the cable. This was on a stock setup.


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[SIZE="2"]David Munro[/SIZE]
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post #25 of 38 (permalink) Old 09-05-2010, 09:46 AM
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Quote:
Originally Posted by 69alfa View Post
And also where and how is the negative connection made
If set up like WA-Alfa's pix in post #8, there's just a short cable that goes from battery to a spot in the RR corner of the trunk deck on the quarter panel side of things, but aft of the tray. Kinda right behind the right end of the tail light.
Captured or welded nut on the outside, hole through the trunk deck, bolt holding cable to ground.

Certainly the flanged bolt you show would work if it's welded down.
Life might suck if it stripped or broke, but that's the case with most fixtures anyway.

Basically the ground should be of adiquate size cable, a short length cable would be better than long, and after that, just firmly and cleanly anchored to the chassis somehow.




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post #26 of 38 (permalink) Old 09-06-2010, 10:10 PM
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This may help. Example from a '76 Alfetta. The wire on both terminals is 10mm, but the positive has an extra sheathing for protection for the long run to the front of the car. Note - the negative is attached to a chassis nut behind the rear seat, with a 13mm bolt. It has never been an issue.
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post #27 of 38 (permalink) Old 09-07-2010, 06:34 PM
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I put the clamp-on Amp meter on the car today and got a peek of 200 amps and a steady draw of 115 amps . The 200 amps would only last for a very short time . So I will use 115 amps and guess at 15' to be safe.

Using this calculator with 15' of wire at 115 amps 2 gauge should be fine.

Wire Size Calculator


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post #28 of 38 (permalink) Old 09-07-2010, 07:43 PM Thread Starter
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Nice one 69alfa, I'll be putting in an Odessey PC925 with 1 guage next week, I'll update the list then to let people how it goes
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post #29 of 38 (permalink) Old 09-08-2010, 04:24 PM
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1 gauge ? Man that will slow you down . You are going to need to find some more HP .


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post #30 of 38 (permalink) Old 12-04-2011, 09:45 AM
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I mounted my battery right to the trunk floor as in post 8 but without the extra plate shown.
Same location as far right and forward as possible used 22NF battery 5.5'' wide 9.25'' long 8.8''tall. Now that this battery is dead and getting harder to find like to buy an Odyssey PC680 but have to work out an elegant tie down method.

http://www.alfabb.com/bb/forums/alfa-romeo-club-canada-toronto-chapter/149533-alfa-parts-garage-sale.html
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