I hope I have at least 4 good coils, and maybe a spare or two. I will know Saturday, after I attempt to start my engine for the first time. I would like to carry a spare (or two) in the car, which brings me to my question. Any tips on carrying a spare? Ziplock bag? Boxed with bubble-wrap? Thanks.
Rag or ziplock bag is fine as far as i know..
Mine stays on the bench. To each his own. I might feel different if beginning a cross country trip, but for driving through the countryside, seldom further than 50 miles from home, I don't worry about such things. Heck, I don't have spare tires or tubes either. And you do have to have 4 of those. Three coils will get you home. And while anything is possible, good coils with new condensers and properly adjusted points don't fail near as often as some would have you believe.
I pack a spare coil in each car in a cardboard box with padding around the area of the points. I've carried a spare coil in each car for decades. Never needed one yet for myself, but have loaned my spare to other folks a couple times.
I stick a full set of good rebuilt (and tested/properly) adjusted coils in a plastic padded box that is tightly sealed under my seat. And yes, there are times when they have come in handy.
Drove all around Yellow Stone National Park in my 26 Fordor. On my way out to West Yellowstone one of my coils quit working. Sure was nice to have a spare with me. Fifteen miles with hills on three cylinders would not have been fun.
After you get the coils all nicely set up try not to press or push on any part of the points when installing them esp the area around where the points mount to the coil. Holding the vibrating point down to check for miss is one thing but pushing on the rear section can change the adjustment.
I carry a couple with me in each of my cars. I rarely need to use them, but when on tours, quite frequently, someone will need one. Much easier to replace a coil than to replace points along the road.
Since I live in Sunny Humid Florida, I keep my spare in a ziplock bag with dry rice (as a desiccant)
I keep one wrapped in a rag under the back seat. Never had to use it myself, but I have loaned it to others.
The absolutely ideal way to carry a spare coil (which is a good idea), is to build a box for it that includes 'stops' that keep the body of the coil from sliding around, thereby keeping anything from touching the points and the complete point setup. As others have said above, the points are a bit fragile - not in operation, but when knocking around under your seat. I also wrap plastic around it, just to keep it dry.