Lazy throttle response

[Doruntrus]

So just a real short, quick advice sort of thing. First off, I have the hated pods on my bike. 1981 cb750c with stock jetting, rebuilt carbs. The pods are really just until I get around to building an airbox, I have them taped up and I removed the internal lip to reduce interference with the vacuum intake.

Anyways, my big question is this: I took it for a test ride, the bike idles beautifully (lower and more steadily than before carb maintenance when I still had the airbox), good and quick throttle response off the line, but it seems lazy if I just open it up within the 1/4 to half. Picks up immediately if I go to wot. I'm wanting to say it's still running lean, but I forget which parts of the carb control fuel air mixture for different throttle positions and I can't find the info again online.

I do realize a jet kit and proper combined airbox should be near the top of my list, this guy is just on a budget and getting more necessary/preferred items out of the way first.

[free2ride]

Doruntrus wrote

. . . but it seems lazy . . .

well, we are in the dog days of summer . . . lazy is the way to go!


sorry . . . I couldn't resist.

[Doruntrus]

Haha, that is a pretty bad way to describe it. It's just not giving me as much response as it should when given partial throttle. I'm not sure of the best way to describe it.

I'm loving the weather though, when it isn't raining.

[TOOLS1]

On normal carburetors the needle jet controls mid range, but on those CV carbs, who knows?
TOOLS

[Doruntrus]

So I actually looked up the difference in CV carbs, and it seems like a slightly odd system. So a non CV carb would have the heavy vacuum pucks directly controlled by the throttle cable and the butterflies not there at all?

[TOOLS1]

The non CV carbs would have slides controlled directly from the throttle control, and not by the vacuum signal coming through the carb. That is why it is impossible to make the CV carbs work with pods. They wreak havoc on the vacuum signal, and no amount of jetting changes will correct this.
TOOLS  

[Doruntrus]

Which is why you have to maintain the vacuum, and you need a combined airbox for it to really work so all carbs can share an average vacuum. And from what I understand, the only advantage CV carbs have is that they automatically adjust for changes in air pressure. It would seem that it comes at the cost of slower throttle response and more restricted airflow to the engine since you can't run a more free flowing setup, right? I appreciate you taking the time to go over a tired topic with a newcomer to these bikes, TOOLS1.