John........early N-engines sparkie-wires were NOT very "water-proof" and needed extra protection from the elements provided by the tube. Modern copper-core silicon insulated sparkie wires are SOOooo much better. So unless yer rebuilding a trailer queen or are sphincterly challenged, I would NOT bother to putta tube on the engine. I'd probably use some plastic tie-wrap straps to clippie them together inna bundle to keep'em away from the fanblade and make'em look nice along the length of the engine block.
When I got my eazy starting 6V 8N back in 1992, the sparkie wires were so STIFF they cracked when I removed them to change my sparkie plugs. Yes, OLD sparkie insulation dries out and cracks and the sparkies dance on TOP of the insulation. You doubt? Watch yer sparkie wires on a DARK nite.
I bought some copper-wire silicon insulated HOT-ROD sparkie wires for Pontiac V-8 for the right-angle sparkie booties under the gastank. (cut-to-fit) Simple, eh? ........Dell, yer self-appointed sparkie-meister
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Today's Featured Article - History of the Nuffield Tractor - by Anthony West. The Nuffield tractor story started in early 1945. The British government still reeling from the effects of the war on the economy, approached the Nuffield organization to see if they would design and build an "ALL NEW" British built wheeled tractor, suitable for both British and world farming.
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