george44

Hi guys, anybody can tell what is the correct size for the battery, i.e. type, I believe this is how you select it. Car is a '79 SC. Thank you,

George

Droops83

In the SC the original battery size corresponds to a group 91 using BCI sizing. A group 93 also fits, which is a larger battery that generally has more power and is a good idea if you live in a colder climate or have some huge aftermarket stereo or something. Whatever you do, make sure you have a battery hold-down bracket securing the battery, many of the 911s I see do not have one and the excessive vibration from bouncing around shortens the life of the battery and increases the chance of spillage.

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Chris Andropoulos
Schneider Autohaus
Santa Barbara, CA

Gary R.

Do yourself a favor and upgrade to the dry-type battery. Half the weight and no chance of it eating the front of your car away. I use an Odyssey 925 in my track SC but heard Optima is VG also.

george44

Chris, Gary, thank you very much, appreciate!

George

earlyapex

This should tempt you!

http://rennline.com/category.php/sid...2/auto/Porsche

rnln

I just bought this one for proximately 1/2 price. Slightly used, if don't want to say it's new.
I know he's still have 1 or 2 left, same condition (he said).
If you are interested, email me. I can give you his contact #.
PS: only the battery. I made the holder myself.

Eric-17

Hello:

Recently replaced the huge battery in my '79 SC with an Odyssey PC680T. Love it!!! Much smaller and very light-weight.

http://www.gotbatteries.com/items.as...SL105/37L105S4

Eric

theiceman

too bad we can't get a group buy on something like that .. it looks cool !!

bourgeois911

16AH? Doesn't seem like much capacity.

Dr. Dynamics

At least for 87s the replacement battery (if your only looking for a normal battery) size is 48.

theiceman

I guess it better start on the first crank ..

Peter Zimmermann

I put a group 48 DieHard in my '82 - very satisfactory solution. It's the smaller of the two sizes, lines up perfect with the rear hold down bolt hole, and the o.e. hold down fits the "foot" on the battery. Looks like a factory installation (which I always like), carries an 8-year warranty, and cost about $110.
Pete

der Mond

I put an Optima in, got the adapter from AJUSA, and had to buy a longer negative battery cable from NAPA. The whole thing is more expensive and more hassle than what Pete suggests, but would satisfy the man who demands a "dry" battery. Just be sure that if an Optima Red Top gets discharged by mistake (headlights on overnight, etc.), you charge it back up with an external unit as opposed to the car's alternator. In its normal state it takes less juice to keep charged, but in its discharged state takes a whole lot more and can possible destroy an alternator or lessen its life.

Naitove

How did you mount it?

der Mond

The adapter is just a metal plate that the battery bolts to, then the plate bolts to the car with the existing mounting holes and screws. This is because the battery is less lengthy, necessitating the longer negative battery cable. It's really very easy. The hard part is getting the negative battery cable off the car, since on mine they routed a windshield washer hose over the nut pretty tightly.