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Doms CB550F1 project
Johnny4428:
My 750 has Dyna s and Original coils runs great!
DomP:
I have to admit I'm reluctant to remove it. I need to read a comprehensive guide to carb tuning, I don't know whether in coming or going, rich or lean! On one hand everything points to rich with sooty plugs and stinking of fuel then I lean it out to 2 ΒΌ turns out and I've got kangarooing at lower revs and bogging down but suddenly racing away once I hit 3k. I'm not giving it fistfuls but feeding in the throttle. I feel I'm close at times but my lack of carb knowledge leaves me confused.
Laverda Dave:
Hmmm, recent Dyna failures. Dyna were a highly regarded name for ignition systems and coils. I wonder if this is maybe linked to manufacturing changes. Are Dyna still manufacturing in the USA or have they gone like all the rest and moved manufacturing to China?
Rozabikes Tim:
--- Quote from: Laverda Dave on July 09, 2025, 01:14:49 PM --- Are Dyna still manufacturing in the USA or have they gone like all the rest and moved manufacturing to China?
--- End quote ---
The "orange one" will some tariffs on them if so!!
DomP:
Could any of my rich running be related to me running a modified air box? Be ause mine had most of the recirculating parts missing I've plugged the airbox hoses and am running a 550k or maybe a 500 air filter without the hole in the bottom for the air breather. The lid is from an F model as it should be but is missing the snorkel so I've just glued a stainless mesh over it. I'd have thought this would all be less restrictive so if anything would tend towards lean?
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