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Vintage Johnson Coil Resistance
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<blockquote data-quote="BrayD" data-source="post: 506165" data-attributes="member: 24554"><p>Update - installed new coils and wires. New coils measured around 4.5k across the secondary windings.</p><p></p><p>Motor ran pretty well last weekend. Idles really smooth and has plenty of power at the top end of the RPM range. It stumbles really bad as I roll on the throttle though. Almost like a cylinder drops out under acceleration. Once both cylinders come to life it pulls hard all the way to WOT.</p><p></p><p>Pulled the flywheel off again and set the timing with my multimeter last night. I'll revisit my carb linkage-to-ignition plate timing as well. New plugs for good measure and we'll see how it does this coming weekend.</p><p></p><p>[ATTACH=full]117655[/ATTACH]</p></blockquote><p></p>
[QUOTE="BrayD, post: 506165, member: 24554"] Update - installed new coils and wires. New coils measured around 4.5k across the secondary windings. Motor ran pretty well last weekend. Idles really smooth and has plenty of power at the top end of the RPM range. It stumbles really bad as I roll on the throttle though. Almost like a cylinder drops out under acceleration. Once both cylinders come to life it pulls hard all the way to WOT. Pulled the flywheel off again and set the timing with my multimeter last night. I'll revisit my carb linkage-to-ignition plate timing as well. New plugs for good measure and we'll see how it does this coming weekend. [ATTACH type="full" alt="2023-10-24 14_54_02-iCloud Photos.jpg"]117655[/ATTACH] [/QUOTE]
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