Making new plug wire, Resistor cap or resist that cap ???

gtsun

Joined
Sep 21, 2009
Messages
1,609
Hi, I'm making up a new plug wire & cap for my little BSA 441 SS. I have a xtra 5000 € NGK resistor plug cap and am wondering, is there any reason not to use it?? I certainly don't want to make it any less likely to fire & a friend says the resister plug cap could weaken the spark. True? False? To minor to care about??? It still has the stock points etc.. Thanks. Glenn.
 
Re: Making new plug wire, Resistor cap or resist that cap ??

A resistor cap shouldn't really make any noticeable difference. Why not try it and see?
 
Re: Making new plug wire, Resistor cap or resist that cap ??

Thanks LAB, I will try it and report my scientific findings... It's been running on the origional wire & cap from 1968 so I guess anything new can't hurt.
 
Re: Making new plug wire, Resistor cap or resist that cap ??

Les has it right. Just insure that you run only non-resister plugs. The NGT resister caps have particularly attractive graphics. For a while I was running my Victor on iridium plugs and non-resistor caps (I'm using an EI), but have gone back to standard plugs (NGT) and the NGT resistor cap. While I don't understand it, the Victor is a more willing starter with the standard plugs.
 
Re: Making new plug wire, Resistor cap or resist that cap ??

Thanks Rick.. I'm using a NGK B7E S plug. What Electronic Ignition unit are you using?? And did it make any differance in easy starting???
 
Re: Making new plug wire, Resistor cap or resist that cap ??

I'm running a Pazon Surefire EI in the Victor. I found the bike to be a bitch to start with the AAU. I hurled the points assembly into Lake Washington and have enjoyed easy starting from that point forward. A newish freshly charged battery is essential. I recall Kommando, in a post a few months earlier, recommending the ES series NGK plugs for his Victor, so it looks as though you and I are in good company regarding plugs.
 
Re: Making new plug wire, Resistor cap or resist that cap ??

I ran the BP7ES, the P stands for projected electrode, cold starting seems a tad easier, it sticks more out into the combustion chamber but I have now changed to the Irdium version still with the P, no difference other that plug fouling is not a problem anymore.
 
Re: Making new plug wire, Resistor cap or resist that cap ??

The resistor cap or plug is used to lessen radio frequency interference which aside from annoying people nearby can cause problems for ECU's, ignition control units etc....but you can also get RFI suppression by using spiral wound wire. (FWIW I bought a universal Street Fire V8 wire kit from MSD and used it to make wires up for my Norton, they work great, came w/ a clever crimping tool for use in a vice)

Making new plug wire, Resistor cap or resist that cap ???


Making new plug wire, Resistor cap or resist that cap ???
 
Re: Making new plug wire, Resistor cap or resist that cap ??

Well I made up a new plug wire with the NGK resister cap and it fired right up but then wouldn't restart. I checked for spark and with the NGK cap it's real weak. Put the regular cap back on and it has a much better spark. However even after cleaning / reseting the points, cleaning all wire connections etc it still just won't start sometimes... I tested the coil and it's good, carb has just been gone through, piolet jet clear etc, new stay up float/viton needle. It's odd, I'll go to ride & it will start on the first kick & run great but then I stop somewhere & it just will NOT start.. New battery too.. Maybe the switch contacs ??? I'm running out of things to check...
 
Re: Making new plug wire, Resistor cap or resist that cap ??

gtsun said:
Well I made up a new plug wire with the NGK resister cap and it fired right up but then wouldn't restart. I checked for spark and with the NGK cap it's real weak. Put the regular cap back on and it has a much better spark. However even after cleaning / reseting the points, cleaning all wire connections etc it still just won't start sometimes... I tested the coil and it's good, carb has just been gone through, piolet jet clear etc, new stay up float/viton needle. It's odd, I'll go to ride & it will start on the first kick & run great but then I stop somewhere & it just will NOT start.. New battery too.. Maybe the switch contacs ??? I'm running out of things to check...
Click to expand...

hmmm...I had a Victor 441 long ago and remember part of the starting drill was to crack the compression release just right and it would fire right up, but don't know if your bike has one...
 
Re: Making new plug wire, Resistor cap or resist that cap ??

Yes & your right it's all in the drill. Bring it up on compression, pul in the release & kick it just a tad, let go of the release and kick hard. For a long time it would start first to third kicks but it would allways start. Now for some reason it may start on the first kick or just not start at all.!!! I can't figure it out..
 
Re: Making new plug wire, Resistor cap or resist that cap ??

Your pilot jet may be clogging up which gives hard starting or the slide is wearing giving an air leak which gives less air to the pilot circuit. I fit an extended throttle stop screw and for cold starts, I screw it in one turn and when it starts I screw it back out as it warms up, with the extension you can adjust with a gloved hand. I also have fitted a choke for warms starts, sounds odd but it works if you leave the bike for 15 mins.
 
Re: Making new plug wire, Resistor cap or resist that cap ??

I have had the carb apart a few times & always clean the piolet jet.. I have a new Bosch 12 volt coil and am going to put it in... Is there any down side to this or danger??? Do I need to alter the plug gag??? Thanks.
 
Re: Making new plug wire, Resistor cap or resist that cap ??

gtsun said:
Yes & your right it's all in the drill. Bring it up on compression, pul in the release & kick it just a tad, let go of the release and kick hard. For a long time it would start first to third kicks but it would allways start. Now for some reason it may start on the first kick or just not start at all.!!! I can't figure it out..
Click to expand...

On my Victor I eventually learned by experimentation to barely crack the compression release WHILE kicstarting it, made for much easier starts...but it had to be cracked just the right amount.
 
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