Mark SF

Mine is missing. Scary!

James Bailey

Call Tom @ 928 International 714-632-9288 they should have it.

jpitman2

What tie down? not the strange curved bit of tin that doesnt seem to fit anywhere useful? Insulate the top of the positive post, clamp the lid down....
jp 83 Euro S AT 52k

Fogey1

That strange curved bit of tin fits fine, and very usefully in mine - the top bolts on to a flange in the battery compartment and the other end presses down on a flange at the base of the battery. A very positive mounting system.

I also insulate the compartment lid on General Principles.

jpitman2

My battery must be too big - it occupies ALL the space, and there doesnt seem to be room to fit the retainer.
jp

auzivision

Wow, I didn't even know 928s came with these. Did all 928s come with a tie down?

michael j wright

Anyone have pics? I have mine but not shure how to install.

dr bob

Installing the battery, the battery drops down in the rear of the well, then slides forward so the little tabs at the bottom front of the battery sit under the bracket that's a permanent part of the battery well. With the battery forward, there's still less than an inch at the rear. The J-shaped hold-down drops down in that space between the rear of the battery and the rera of the battery well. The shape wedges the battery forwar, and the bottom of the bracket holds those bottom tabs down at the rear. A single bolt from the top, through the flange on the J and into the top lip of the well is all it takes to keep everything in its proper place.

The tabs on the battery and the size are specific to the group 48 (49 for early cars) batteries. Other notable features are the lowered terminal posts, the positive terminal cover, and the vent hose nipple from the vapor separator. If you decide to use a more-common lower-cost battery in the group 24/25/74/75 class, you'll find that the factory hold-down doesn't fit the same. The terminals are perilously close to the metal lid, and there's no place to hook up a vent hose. Put a thick layer of neoprene or PE inside the lid and it will help keep the terminals from shorting to the lid. Similary, a spacer block could be used to keep the battery from being damaged from vibration of movement in the well. The right combination might make a somewhat satisfactory installation for casual driving. It still depends on the lid holding the battery down though. Easy job except in an accident.

Hilton

This thread has pics of the correct ski-jump clamp:

https://rennlist.com/forums/928-foru...-is-there.html

michael j wright

Thanks Doc, Hilton- I will now go out and see if I can get it to fit as designed, may need to find a bolt though. -Mike

Marine Blue

Considering that damage/leaks could occur due to loose batter it is definitely a good idea to get a tie down.

GregBBRD

You've obviously never looked closely at the results when a vehicle goes on its roof. Although the spare tire might keep the door closed (assuming that the tire has its hold down), if the tire is out, that battery is going to be bouncing around inside the vehicle like a ping pong ball.

I had a really good friend, in a coma for 8 weeks, from a battery hitting him in the head....and that battery came from under the front hood of a 911! He was almost back to normal, 2 years later.

the flyin' scotsman

With the battery hold down in place and the right sized battery there's zero movement.

Also confirm that the handle in the tool kit does fit the hex bolt that locks the hold down in place.

An installed pic: