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Engine Ground

B

BruceP

Well Known Member
Where did you guys bolt your engine ground to the engine? Specifically for an O-320. Any pictures would be appreciated. I tried to search the forums...
 
At the bottom of the case by the accessory case joint below #3. There should be a fore/aft hole there. Don't forget to remove the paint for grounding.
 
On my O-320-E2A there is a convenient hole just aft of where the oil dipstick tube threads into the case. I scraped the paint off and used a AN4 bolt to attach the ground line directly from the battery.
 
I've used sump bolts and various holes like the one behind #3 Cylinder on the case. Agree with making sure you clear it of paint!
 
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