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Registered
Join Date: Jul 2001
Location: Atlantic Beach, NY
Posts: 317
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Choice of battery?
I need a new battery for an '86 911 turbo. I've searched this board and it seems some of you use optima batteries. Others go for interstate, and some for die hard. I don't seem to be able to find a battery that will fit well(group #49 I believe)in anything other than porsche OEM which goes for $135. Where do I find a battery that fits, or do I just rig up an adapter tray?
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10-06-2001, 09:14 PM
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Registered
Join Date: Oct 2000
Location: Nor-Cal
Posts: 4,403
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Right now I have an Interstate. When it dies I'm converting to an Optima. That's what I would do, if I needed one now.
------------------ Matt Chamblin 78 911 SC |
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10-07-2001, 04:41 AM
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Platinum Member
Join Date: Jul 2001
Location: Leave the gun. Take the cannoli.
Posts: 20,995
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Optima only choice for me. 5 years old in a track car, and starts first thing every spring.
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10-07-2001, 06:20 AM
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I installed an Interstate in my '87 Targa.
Car is driven only occasionally for pure fun with the battery remaining connected in between rides. Only been 6 months but battery is still very strong and fit was excellent. |
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10-07-2001, 06:37 AM
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Join Date: Feb 2001
Location: Mill Valley, CA
Posts: 204
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optima
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10-07-2001, 08:47 AM
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Registered
Join Date: Apr 2001
Location: Linn County, Oregon
Posts: 48,535
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Running Optima in our two Dee-Troit iron. Found some exact size german made gel cells for the twin batteries in the old '72. Single battery? Get the adaptor kit, go Optima...you won't be sorry. The Optima in my old Dodge 4X4 is now 8 years old, going strong.
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10-07-2001, 12:11 PM
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Registered
Join Date: Jul 2001
Location: Springfield, MO
Posts: 1,422
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Optima seems to have a good history. It is a weird shape for an auto battery. Interstate also sells the optima battery in their own name.
I have also found a sealed/gel cell battery in the 24 size. This is a common size for GM vehicles. This is what I will go with. I made an adapter tray for the Porsche. It will hold a 24 size or a DT3, Wal-Mart special. This gives me a lot of flexability. Good luck, David Duffield |
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10-07-2001, 12:18 PM
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Registered
Join Date: Jul 2000
Location: So. Calif.
Posts: 19,910
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For those of you who like to innovate, try using two 6 volt Optima batteries in series. This way, you can split the weight in two and mount them in more "optimum" locations.
Sherwood (too much time thinking instead of doing) |
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10-07-2001, 12:39 PM
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Registered
Join Date: Jul 2001
Location: Lenexa, KS. USA
Posts: 166
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I just replaced an Interstate with another. The one that was replaced lasted 10 years, so I went with another.
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10-07-2001, 04:20 PM
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Registered
Join Date: Apr 2001
Location: Linn County, Oregon
Posts: 48,535
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"Optima seems to have a good history. It is a weird shape for an auto battery. "-old_porsche
You got that one right. Guess the lead is shaped in a spiral for each cell. At a local hot rod cruise-in, saw an optima "detailed"...like a six pak of Bud! Still wondering how he did that... |
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10-07-2001, 04:25 PM
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1987 Porsche 911 Targa 3.2 
