As jimbo said, too much carb isn't necessarily a good thing, best thing to do is to visit with ec or competition carbs, let them know your motor combo and they will recommend the size of carb they feel will be most efficient for your motor....I run an open stroker animal and with my combo of internals, a 28mm alky was their recommendation, won a feature race first time out with it....so again, bigger isn't always better....Is the 32mm mikuni that much more Of an advantage over the 28mm? Advantages or disadvantages?
Maybe he had a turbo set up on it?"Force more air in"? Maybe it was the things you did because of the bigger carb? More clutch slip, more RPM? And You increase the venture area by about 72%, that's a bunch.
How does do that!!A carb doesn’t force air into the engine. The engine pulls air in through the carb.
Remember, the fuel bowl is not pressurized - it is vented to atmospheric pressure.
Well written, but I'm afraid your conclusions and analogies are totally flawed.
Air flows because it's push. It's push from a high-pressure area to a low-pressure area. There is no such thing as "suck". I stress this point because I believe it makes a difference when studying carburetor airflow and fuel flow.
Yeah, but really Kat, do you think that guy knows anything about pressure differentials or air movement. Hmmmm............I did not write that Al.
I simply copied a page out of technical manual written by a chief engineer for Holman Moody Racing. An Arm of Ford racing
I just wanted to see if you would argue with it.
Atmospheric pressure is approximately 15 psi at sea level. Any pressure lower than that is considered a vacuum and is measured in powers of 10. 10 to the 8th, for all practical purposes, is considered a perfect vacuum. Not quite, but close enough for all practical uses.Where does the low pressure come from?
It comes from or is the result of air being expanded in the cylinder.Where does the low pressure come from?
The suck vs push debate has been going on forever. From a practical standpoint, does it really matter? A carb works by manipulation of air velocity and therefore pressure. One way or another, flow is created due to pressure differential, just like the way wind is created through pressure differentials in the atmosphere.Al, you mention that it's important to understand there is no such thing as "suck" to better understand carb airflow and fuel flow, correct?
Could you explain for us how the fuel is delivered from the main nozzle to the venturi?
Not trying to start an argument, mind you, I think I understand your point; just wondering how you able to explain the fuel in relation to it being pushed rather than sucked, (going from higher pressure to lower pressure,) for us since you brought it up.
Remember, the fuel bowl is not pressurized - it is vented to atmospheric pressure.
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Having the same conversation again and again displaces the life right out of me.It comes from or is the result of air being expanded in the cylinder.
There is no sucking involved.
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