Author Topic: '76 CB 550 air screws / ignition *updated*  (Read 2532 times)

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Offline Deltarider

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Re: '76 CB 550 air screws / ignition *updated*
« Reply #25 on: February 24, 2013, 06:46:05 AM »
Quote
Nice info - I finally found the NGK page with the data:
http://www.ngksparkplugs.com/docs/Resistor_Covers.pdf
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Yeah and if you scroll a bit further down you'll find the NGK J-1 cable coupler, an - in my view -often overlooked excellent alternative for buying new coils in case the leads have become shorter.
« Last Edit: February 24, 2013, 06:48:01 AM by Deltarider »
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Offline prov431

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Re: '76 CB 550 air screws / ignition *updated*
« Reply #26 on: February 24, 2013, 02:39:02 PM »
Well the results are in......caps 1-4 were 4.67 ohms each, cap 2 was loose and cap 4 was 5.65 ohms & the threads covered in what appeared to be cable insulation...the attached coil lead was also a bit chewed up. I ended up trimming all 4 leads to get to some "fresher looking" wire, cleaned up #4 cap and reinstalled everything. I may indeed need that NGK coupler because there is no way I can trim any more length from the coil wires now....they must have been cut a few times over the years.

Still haven't run the bike and don't know if anything I've done will even make a bit of difference, but it's been fun learning and wrenching on the old machine. My header is due back from ceramic coating Tues or Wed....once I get it back on I'll see how it runs!

Offline dave500

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Re: '76 CB 550 air screws / ignition *updated*
« Reply #27 on: February 24, 2013, 10:55:34 PM »
good effort,now you can be sure in your mind that section is good,too many guys pull carbs off a few times only to find a dead cap or points or some other thing.