Off-topic Ultimate heavy duty ignition

[Lefty71]

The epitome of distributor caps??!!;


Military Dodge m880 shielded distributer cap NOS | eBay

 

[HALIFAXHOPS]

Have seen those for the slants. Basically waterproof, no idea why they had the ground strap maybe if there was a spark leak the occupants would not get juiced under water?

 

[RJRENTON]

Have seen those for the slants. Basically waterproof, no idea why they had the ground strap maybe if there was a spark leak the occupants would not get juiced under water?

IMO....because the cap and ignition system used shielded cables to the spark plugs, and the shields were terminated at the distributor cap, in order to complete the shield grounding scheme, the cap had a ground strap to be connected to ground. The ground plan was more likely to be for RFI suppression rather than for occupant protection. Shielded spark plugs, wires and ignition components are used extensively in piston engine aircraft to prevent RFI interference with on board navigation and communication equipment. Just my opinion of course.
BOB RENTON

 

[Jc cooper]

IMO....because the cap and ignition system used shielded cables to the spark plugs, and the shields were terminated at the distributor cap, in order to complete the shield grounding scheme, the cap had a ground strap to be connected to ground. The ground plan was more likely to be for RFI suppression rather than for occupant protection. Shielded spark plugs, wires and ignition components are used extensively in piston engine aircraft to prevent RFI interference with on board navigation and communication equipment. Just my opinion of course.
BOB RENTON

Sound correct and as usual very logical explanation! Thanks!