1983 Porsche 911 SC Targa

Sunday, October 21, 2012

Battery Boxes, part 2

The first battery box is taking form. The iron has been cut, sanded, and tack welded. I like sanding the parts before welding. After the structure is assembled, it is difficult to get access to clean inside corners. A clean surface is import for a strong welded joint.

There are a couple of interference issues that need some attention. I need to maintain at least half an inch clearance between the battery box and transmission adaptor plate. The transmission will flex and rotate some under load.

The batteries must stay below the rear motor mount bracket to prevent the battery terminal from being shorted out across the car frame.


  1. I did a Porsche 924 conversion a few years ago, using the Warp9 motor, 1000-amp LogiSystems controller and Deka Dominator lead-acid gels. You can see it at: http://www.geopathfinder.com/Porsche924.pdf .

    1. Bob, you have a nice write-up and a good looking conversion. I like your FAQ style with the rationale behind your decisions. I hope to someday add photovoltaic and become more energy independent.