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.....
massive reconfiguration time again.
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Wouldn't that be "bowls" by holley.
j par
Well-hung Member
I'm talking 65-70 on the freeway for 45 minutes steady...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.....
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.
Cope
Fusing with fire
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...
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...
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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j par
Well-hung Member
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?
j par
Well-hung Member
Damn it man that's a lot of work!
Cope
Fusing with fire
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?
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?
j par
Well-hung Member
No it's one to one...
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.
j par
Well-hung Member
One two and three had the whitest tips and four had a little bit of color on it. While the back plugs look okay.
j par
Well-hung Member
I think I'm just going to try and driving around town a little bit and see what happens.
Cope
Fusing with fire
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.
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.
Cope
Fusing with fire
Easy way to test is to remove the air filters/ hat and drive it on the HWY.
j par
Well-hung Member
Back
more air rushing threw the idle transfer slots causing more fuel to be pulled threw. just like if you have open the throttle.
Cope
Fusing with fire
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.
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)
The cruise circuit hurts my brain as well. idle and full throttle is all a drag racer needs
j par
Well-hung Member
It's probably why I've never experienced this condition because I've never really drove the car like this....The cruise circuit hurts my brain as well. idle and full throttle is all a drag racer needs
j par
Well-hung Member
Here's one you can Holley guys haven't thrown in... Changing the metering Rod Springs??
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