massive reconfiguration time again.

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I understand wanting a Big Gulp of air at wide open throttle, but at a steady freeway speed?
Honestly I'm thinking about blocking the front quarter of the front air filter? And see if those front plugs don't improve...
What do you think of my forced air in the front carburetor scenario?
Well, if it's a still day that would work fine. But if you have a nice tail wind, you'd have to turn the blockage to the back of the air cleaner. But then, if you went around a corner and now a 20 mph gust was hitting the passenger side..... :BangHead::BangHead::BangHead:
 
Well, if it's a still day that would work fine. But if you have a nice tail wind, you'd have to turn the blockage to the back of the air cleaner. But then, if you went around a corner and now a 20 mph gust was hitting the passenger side..... :BangHead::BangHead::BangHead:
I'm talking 65-70 on the freeway for 45 minutes steady...
 
I'm talking 65-70 on the freeway for 45 minutes steady...

I wind will be shifting directions continuously as you are driving down the road. The road swings to the left and the road swings to the right the airflow over your carburetors will be shifting from left to right.
The engine itself will be only drawing air through the carburetors that it wants. If you have 2000 CFM carburetors on top of that tunnel ram it will not matter if the engine demand is only 150 CFM.
In other words you're blocking of one side of your air cleaner is not going to do you any good.
 
I dont know that i agree with that.

The ram air affect could easly push more air past the carb.?

I have a cut out under my scoop just for that reason. It allows the air to exit the scoop vs being forced into the engine.

I have no idea if this is correct but it is what i have.

Have you ever ridden a road bike? The wind is always in your face. You think, ok im gonna turn this corner and not be in a head wind but nope.. its not the wind so much as its you moving...
 
I dont know that i agree with that.

The ram air affect could easly push more air past the carb.?

I have a cut out under my scoop just for that reason. It allows the air to exit the scoop vs being forced into the engine.

I have no idea if this is correct but it is what i have.

If you have ram air affecting those carburetors you're going to be letting off the throttle pedal to compensate for it. aren't you?
At what point does your cutout start working. or is it a manual control?
 
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I wind will be shifting directions continuously as you are driving down the road. The road swings to the left and the road swings to the right the airflow over your carburetors will be shifting from left to right.
The engine itself will be only drawing air through the carburetors that it wants. If you have 2000 CFM carburetors on top of that tunnel ram it will not matter if the engine demand is only 150 CFM.
In other words you're blocking of one side of your air cleaner is not going to do you any good.
Cool, I was just thinking you know kind of when you put your hand out the window at 70 miles an hour or riding your motorcycle on the freeway with no glasses at 70 mph.
It was a theory....
Just trying to think what would have caused that condition during that driving condition on that portion of the motor?
 
Is it possible that you need to jet the carb different?
Try swapping positions of the carbs. if the learner plugs follow the carb........you may have to jet them carbs differently.
 
Like i said, i dont know if its right or not.

Lets go with the fact that carburetors work on vacuum. We are not talking blow through carbs.
So if my blades are open X amount they want to be drawing X amount of air.
Now if im doing 70 at cruse with the blades mostly shut and a high pressure area above my carbs. Is that high pressure area more than the vacuum of the engine?

What happens then?
 
Like i said, i dont know if its right or not.

Lets go with the fact that carburetors work on vacuum. We are not talking blow through carbs.
So if my blades are open X amount they want to be drawing X amount of air.
Now if im doing 70 at cruse with the blades mostly shut and a high pressure area above my carbs. Is that high pressure area more than the vacuum of the engine?

What happens then?
you could us that same scenario with sea level air pushing on the butterfly's and not so much pushing on them at altitude.

I think to answer you question. at 70 (ram air) there is more pressure on the top of the carb. pushing more air and fuel into the eng. throttle blade closes slightly to keep the same speed.
 
Like i said, i dont know if its right or not.

Lets go with the fact that carburetors work on vacuum. We are not talking blow through carbs.
So if my blades are open X amount they want to be drawing X amount of air.
Now if im doing 70 at cruse with the blades mostly shut and a high pressure area above my carbs. Is that high pressure area more than the vacuum of the engine?

What happens then?
One two and three had the whitest tips and four had a little bit of color on it. While the back plugs look okay.
 
But the blades are not wide open. The carb dont know it needs to be dumping fule to compensate for the extra air?

Or dose it?

I dont know if the signal works with the blades closed. Say we still in the transfer slot?

This is out side of my carb tuning area.
 
But the blades are not wide open. The carb dont know it needs to be dumping fule to compensate for the extra air?

Or dose it?

I dont know if the signal works with the blades closed. Say we still in the transfer slot?

This is out side of my carb tuning area.
more air rushing threw the idle transfer slots causing more fuel to be pulled threw. just like if you have open the throttle.
 
I just dont tune for cruze. My car goes from idle to wide open. It never is in ram air affect with out being wide open.

But this is something i have thought about quite a bit.
 
Makes sence to me.
competition is calibrated to work with bigger cams then stock. stock one is not.
Maybe just go up a couple of number on the front carb and see what happens (a couple number on the primary sided)
 
I just dont tune for cruze. My car goes from idle to wide open. It never is in ram air affect with out being wide open.

But this is something i have thought about quite a bit.
The cruise circuit hurts my brain as well. idle and full throttle is all a drag racer needs:steering:
 
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