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Old 01-22-2012, 12:03 AM   #1 (permalink)
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Randakk lists NGK (resistor) spark plug caps -- says they work on 80 & 81 GL1100, but not on 82 and up GL1100. Sabre Cycle sells what appears to be the same NGK spark plug cap, and says it works on the GL1000, GL1100, and GL1200. So -- who is right? Will bad things happen if these are used on my GL1100? I plan on using these resistor caps with solid (copper) core wire and non-resister plugs...
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Old 01-22-2012, 12:32 AM   #2 (permalink)
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Are ya crazy? Saber is never, ever wrong! Millions of satisfied customers! You are banned from our store! Please go away now!

(what to expect if you ask them.....)

But Honda's fiche shows different part numbers for the '81 and the '83. Don't know what the difference is, but maybe someone will chime in here. I do know the coils are different between the 2 models, and I'm sure that has a bearing, as well as the gap of the plugs is different.

Could be one has the 5K resistor in the end, and the other doesn't. I do believe you can unscrew the end of the cap and remove the resistor, replacing it with a thick copper conductor to take it's place.
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Old 01-22-2012, 12:52 AM   #3 (permalink)
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I am familiar with Sabre's reputation... that's why I buy my parts from Randaak... I would like to replace the original 30-year-old wires & caps... just looking for some advice on what works and won't kill my coils...
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Old 01-22-2012, 01:52 AM   #4 (permalink)
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Well, copper core plug wire from the auto store is a start. Must get 7mm if you want them to fit right.

I just used the standard NGK plugs that everyone sells, and they worked fine for me. My factory original plug caps measured around 5K ohms, and so did the replacement NGK's. So I figured there was not a difference to be me.

Try yours and see what resistance you measure.
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Old 01-22-2012, 03:36 AM   #5 (permalink)
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I hate to say this but unless Honda changed the diameter of the plug wires Sabre Cycle is correct. All the fours use the same angle cap with the 5K ohm resistor.
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Old 01-22-2012, 04:59 AM   #6 (permalink)
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...up to '81 - non-resistor plugs.

'82 - '83 uses resistor plugs.

Running resistor caps with resistor plugs must behis point.. Doubling the resistence. NGK resistor plugs are 5Kohm.

Caps currently $2.99 each at many places on the net, including Amazon.

60% cheaper?

Anyway, disassemble the caps and clean 'em. I see them as serviceable. Ohm the resistors. Might just need a cleaning.
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Old 01-22-2012, 05:18 AM   #7 (permalink)
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So if you buy the resistor caps, just unscrew the plug, remove the resistor, take a piece of thick solid conductor copper the same diameter and length of the resistor, and reinstall the slug into the cap. Turn the plug cap into a non-resistor.

But all the caps I have tested had the resistor in them from the factory. Hmmmmm.
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Old 01-22-2012, 06:29 AM   #8 (permalink)
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Yeah, same here. Both Nichiwa and NGK caps had resistors. Could've been replaced. Maybe Honda doubled-up resistance for early '80s RFI suppression.

I cut rod pieces longer than the resistors. I do away with the springs as well when I run 'em hot. I forget the length. 21mm? ...something like that. The screw would seat onto the rod, then I get 1 full turn to bottom it.
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Old 01-22-2012, 11:19 AM   #9 (permalink)
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I bought a set of ND non-resistor plugs (X24EP-U9) -- to run with the resistor caps and the 7MM copper core wire... that should work, correct? Also, any experience with ND plugs vice NGK?
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Old 01-22-2012, 11:49 AM   #10 (permalink)
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Will work fine. New plugs, caps and wires are always good.

No exp with ND plugs here.
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