I'm hoping there are some carburetor/induction experts here who can help me out with this one.
So I know the basic formula for calculating the "correct" size for a carb, which basically converts an engine's displacement and max rpm into an airflow rate.
But does this work in all situations, with all types of (naturally aspirated) induction?
some logical thinking on my part tells me that it doesn't. But I could be wrong. I don't have enough experience with different types of engines to know.
What first threw me for a loop and made me wonder was what I read about hot rodding air cooled VW's. It seemed people were using not one, but two pretty big weber 2 barrels on small 4 cylinders. Some of these had as much induction as a mild big block.
What I eventually came up with was that two 2-barrels were acting the same as one 2-barrel. Since the intake manifolds were completely seperate, each carb only had to feed one cylinder at a time, since only one could be on it's intake stroke at once. The same as if there were one carb feeding all cylinders through a common manifold.
Is this conclusion accurate? Does anyone know for sure?
That made me think of the following:
On a v6 engine, with a dual plane manifold, wouldn't a single 4 barrel carb need to be the same size as a carb for a dual plane v8 with the same cylinder size as the v6? Wouldn't one "side" of the carb need to provide flow for a single cylinder filling itself at any given time in both cases?
Is this total rediculousness or am I on to something here?
So I know the basic formula for calculating the "correct" size for a carb, which basically converts an engine's displacement and max rpm into an airflow rate.
But does this work in all situations, with all types of (naturally aspirated) induction?
some logical thinking on my part tells me that it doesn't. But I could be wrong. I don't have enough experience with different types of engines to know.
What first threw me for a loop and made me wonder was what I read about hot rodding air cooled VW's. It seemed people were using not one, but two pretty big weber 2 barrels on small 4 cylinders. Some of these had as much induction as a mild big block.
What I eventually came up with was that two 2-barrels were acting the same as one 2-barrel. Since the intake manifolds were completely seperate, each carb only had to feed one cylinder at a time, since only one could be on it's intake stroke at once. The same as if there were one carb feeding all cylinders through a common manifold.
Is this conclusion accurate? Does anyone know for sure?
That made me think of the following:
On a v6 engine, with a dual plane manifold, wouldn't a single 4 barrel carb need to be the same size as a carb for a dual plane v8 with the same cylinder size as the v6? Wouldn't one "side" of the carb need to provide flow for a single cylinder filling itself at any given time in both cases?
Is this total rediculousness or am I on to something here?