Battery in 1978 928

Can someone explane to me how the battery in the 78 928 is secured in the battery box ? I've seen cars with rags, 2x4s assorted pieces of wood, all used to keep the battery secure in the battery box.

I even went to a Porsche dealer and they had no idea, any help would be greatly appreciated.

Mike M

It isn't from that curved plate metal bit that is screwed in to the side of the battery box and goes down and holds the lip of the battery??? Not surprised the dealer would be clueless. Did you read the manual for the car??? I bet that would tell you what you need to know. Maybe Jim Doerr of 928 Classics knows...

pcar928fan;10294 wrote: It isn't from that curved plate metal bit that is screwed in to the side of the battery box and goes down and holds the lip of the battery??? Not surprised the dealer would be clueless. Did you read the manual for the car??? I bet that would tell you what you need to know. Maybe Jim Doerr of 928 Classics knows...

I think you are correct James. If I recall correctly it is a 13m bolt head that pulls the curved piece of metal down with the battery bottom edge between it and the bottom of the battery box. The curved piece of metal is perhaps 2" wide and nearly the same height as the battery is tall.

Yup, it is this.

In some of my cars that funny shaped tool in the tool kit is for unscrewing that bolt to remove that metal hold down even!

In my cars, it is a allen head bolt that tightens the battery holderand not a hex head bolt. The tool in my tool holder is used to tighten and loosen it.

I looked in PET for the '78 year model and I can't seem to find that battery hold-down piece. I'm wondering if the early early models didn't use this method and that's what the OP is questioning. Somebody that has an OB could help by looking for either the hold-down piece or the bolt hole where the allen bolt would go.