Here are a couple of pictures of the coil box that is in my 1911 touring. As you can see grandpa added some shims to the coils. Are these the right coils for the box or did grandpa jury rig later coils to fit the early box?
You need to find four original Heinze coils for your box. They are on ebay all the time, or I would suggest contacting RV Anderson, in Kennedy, N.Y.
This what you need.
The coils look like they are standard size KW coils. Not cut down to fit into an early Heinze box. Maybe it is a modified 1913 box?
What is the front to back dimension on a coil?
Original Heinze coils have a reputation of being problematic as that can get out of adjustment. Master Vibrators took care of that problem, then the standardized KW/Ford coil solved that problem.
I would not hesitate to use the later coils if they operate properly and effectively.
If you are going to have a show car, or just want to have the correct coils, I can fix you up with a set. Contact me off the forum.
: ^ )
Actually it's a modified '12 box. The lip for the lid looks like it's been cut off. I think you'd have trouble using original Heinze units in this box as the original lid, needed to hold the units properly, won't work with them now. If you like to fiddle around with this kind of thing, you could graft a good upper edge from a junky box onto the one you have, restoring the original dimensions, and re-fit your lid to the new lip.