09-01-2014, 03:20 PM
(09-01-2014, 02:17 AM)Lord Popgun_imp Wrote: Dave,popgun,
I believe you meant to say CANNOT be adjusted. I don't know, and think someone like you may be able to do it. It is just that the service manual says not to adjust the screws or it can't be put back. I would imagine that is more for people like me, with no experience syncing carbs or throttle bodies.
I figured they are set at the factory on some kind of flow bench, but I don't know.
Some people believe that they CANNOT be adjusted (I received such a response in my previous post, a few months back, with a reference to the service manual). I stated that CONTRARY to popular believe they CAN be adjusted. I own and read through the official Honda service manual, where they warn you NOT to adjust the throttle body synchronization (it's kinda like those little tags that they sew on your pillow that tell you not to remove under penalty of law). Honda also informed me that they CANNOT be adjusted, and this is when I informed them that if they CANNOT be adjusted then I would like mine replaced (they did not have a response to this statement). Honda had been refusing to even check the synchronization on my bike (they said they didn't know how to do it), but at lease now they have agreed to do so. I am not 100% sure that they can be adjusted, but the service manual shows screws that they warn you not to mess with because to do so will affect the synchronization. I just figured that if I messed with these screws (with the help of a vacuum gauge) that I could just possibly make an improvement. If it was this simple I would have done this by now, and this is why I have been keeping the pressure on Honda to do something for me. Other bikes (my 1998 Honda VFR800) allow you to synchronize the throttle bodies; why would the CB1100 be different? You are probably right, concerning the throttle bodies being adjusted on a flow bench at the factory, but however they are adjusted, mine are not adjusted properly. I have a really, really good feeling that if the throttle bodies on my bike are properly synchronized then the stumbling and mis-firing below 3,000 RPM will be eliminated, or at least reduced to a more acceptable level. I'm not the only one on this forum who has made comments about their bike performing poorly at low RPM, but I believe that I am the only member on this forum who has actually hooked a vacuum gauge up to their bike and made an accurate measurement. If it wasn't for the vacuum test that I had performed by an independent mechanic, then I would most-likely believe that my bike ran the way it did because of leanness due to the emissions standards.