Featured Removing Ai (air Injection) ..easiest Way Possible?

Discussion in 'Bonneville' started by Netty Neuron, Oct 15, 2020 at 8:28 PM.

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  1. Netty Neuron

    Netty Neuron Well-Known Member

    Oct 7, 2020
    49
    63
    Dallas
    Being new to Bonnies, upon extensive reading up on the mods to do, i started tackling the easier ones first. Mine is a 2006 with 220 miles on it and was sitting in a garage unused for years. So had to clean out all the gunk from the carbs.. and as I just rebuilt/cleaned the carbs (purrs and rides so good now).
    While carbs were out, tank n seat were out, I saw the AI setup exposed right there and went about removing it based on the articles below.

    https://triumphbonneville.org/wp-content/uploads/air-injection-removal-instructions.pdf
    https://www.triumphrat.net/threads/beware-of-air-injection-removal-kit.88223/
    https://www.thetriumphforum.com/threads/secondary-air-injection-removal.9778/
    http://www.bonnevilleamerica.com/pdf/air_inject_removal.pdf

    Instead of removing all the plumbing and recapping the cylinder ports next to the spark plugs (which I saw several reports of the plugs coming out/getting loose/causing unfiltered air to be sucked into the cylinders..etc..) I went down a different route of not removing the plumbing but just flipping the reed valves to remain closed all the time.

    Once I opened up the 2 reed values on either side, these are usually always closed and prevent the exhaust gases from going up the tubes/causing blue-ing of the pipes. So to prevent them from ever opening and to avoid removing all the plumbing, I flipped the valve so it's always closed, no matter what the engine/exhaust cycle is.
    I also removed the vent pipe coming from the valve into the cylinder head and used the same pipe to cap off both the vent pipes on both cylinders.
    I felt the bike ran a lot smoother and of course, no more pops during decel or when throttle is eased.

    Some pics of what I did ..just re-oriented the reed valve flaps so they r always closed. This allows, imho, to keep the rest of the plumbing as is, stock and if u need AI, flip the valves back again and connect the hose back to the valve and cylinder heads.

    I have noticed much smoother idling, acceleration, zero POP's during deceleration after I have done this and rode around 50 miles with this. I think this is working but if any experts or long term bonnie tweakers have any comments/advice, pls do let me know..

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