Engine ground

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Model T Ford Forum: Forum 2012: Engine ground
Top of pagePrevious messageNext messageBottom of page Link to this message  By Richard Wolf on Friday, October 26, 2012 - 12:41 pm:

Where would be the best place to put an engine to frame ground?
Oh, don't say engine 2 frame. LOL


Top of pagePrevious messageNext messageBottom of page Link to this message  By Jim Patrick on Friday, October 26, 2012 - 12:59 pm:

The 2 engine pan arms and nose should provide plenty of ground as long as the bolts are making good contact with the bare metal inside the frame holes. You can also use serrated washers that will dig into the steel, thereby increasing the contact between the steel of the frame, the three points of contact, the bolts washers and nuts. Scraping the areas under these points bare will also help. After assembly you can touch up these areas with primer and paint to protect and hide the bare contact points underneath. Jim Patrick


Top of pagePrevious messageNext messageBottom of page Link to this message  By Jim Patrick on Friday, October 26, 2012 - 01:03 pm:

PS. In answer to your question, I would say to use a braided ground strap from one of the pan arm bolts to a 5/16" bolt and nut in a freshly drilled hole in the frame nearby. Jim Patrick


Top of pagePrevious messageNext messageBottom of page Link to this message  By Richard Wolf on Friday, October 26, 2012 - 01:13 pm:

Jim; What size wire do you use?


Top of pagePrevious messageNext messageBottom of page Link to this message  By Peter Claverie on Friday, October 26, 2012 - 01:36 pm:

You can use just about any location you find convenient. I put mine from one of the bolts holding the "fourth main" on, to one of the bolts holding the parking brake lever quadrant. No holes to drill, and both were convenient (although I had to enlarge the hole in one end of the cable to fit the fourth main bolt).

Since this is an auxiliary electrical path, not the entire path, a smaller cable than those used in the starter circuit is sufficient. While the starter path requires O gauge, and OO gauge is better, I used an off-the-shelf 12 volt car's solenoid-to-starter cable of the proper length. These are found hanging on a rack in most any auto parts house, in lengths from about 8 inches to 3 feet. They appear to come in two wire sizes, and of course the heavier is better.

Adding this cable made a surprising difference in the starter's speed. Just be sure the metal where it attaches is clean and bright!


Top of pagePrevious messageNext messageBottom of page Link to this message  By Jim Patrick on Friday, October 26, 2012 - 01:44 pm:

I think that it should be about the same diameter as the battery to starter cable (Snyders calls it heavy 2/0 cable) about 12" long with eyes on each end. I was able to find one for mine at one of the local auto parts stores in the electrical section. Works great! Jim Patrick


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