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Allis Chalmers Discussion Forum

WD engine wires

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01-08-2004 13:57:37

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Can anyone tell me the correct guages and materials to use when making new spark plug wires and coil wires (the smaller wires coming from the two smaller coil terminals) for a WD with a 12V system? My smaller coil wires especially have a number of breaks and splices, so it's time for some replacements.

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Steve in N.J.

01-11-2004 16:19:07

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 Re: WD engine wires in reply to ED, 01-08-2004 13:57:37  
We build spark plug wire sets for most early AC machines such as your WD. They are copper core, have Orange Hi Temp Silicone spark plug boots, and come with Dielectric grease to seal out moisture. As for your wiring, we also design complete wiring systems for the WD/WD45 series machines, or we can supply you with the neccessary circuitry to get you going again. If you want to tackle it yourself, 16 gauge wire would work fine from the ignition switch to the coil, and from the coil to distributor when running a 12V system. Drop us a line if interested, be glad to help ya out..... .
Steve/B&B Custom Circuits

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Doug in OR

01-08-2004 17:21:06

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 Re: WD engine wires in reply to ED, 01-08-2004 13:57:37  
You should use nothing but sparkplug wire for the plugs. Use only non-resistor type for a WD. I'd buy the pre-assembled type myself - it has the moisture boots on each end already. For a few dollars more, you can do it right. As for the coil: You can use 18 AWG wire if you like. Personally, I like 16 AWG better - it has more mechanical strength, if nothing else. Heavier wire will not gain anything, and is harder to work with.

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01-08-2004 16:32:39

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 Re: WD engine wires in reply to ED, 01-08-2004 13:57:37  
As far as the plug wire get a universal set from the parts house copper wire type and as far as the wires going to the coil they should be #14 or #12 either will work but I'd go with the #12 because of being heavyer wire

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