Let's talk RAM air...
12-02-2011, 10:02 AM
#1
Let's talk RAM air... "Experts" claim that there is no such thing, as explained in the attached article.
http://www.paladinmicro.com/documents/RamAirMyth.pdf
Exactly why theorists need to get out of the classroom to test their theories. We all know that RAM air works. Any LS1Tech search regarding the subject will lead to documented improvement data.
https://ls1tech.com/forums/generatio...air-worth.html
I have spent a lot of time & $ to improve the effects of RAM air on the MUNSTER, as well. Perhaps, it's the term RAM (rapid air movement) that doesn't properly define what is happening. Regardless, there is a power improvement when the intake has in-line access to air moving @ the vehicles speed.
http://www.paladinmicro.com/documents/RamAirMyth.pdf
Exactly why theorists need to get out of the classroom to test their theories. We all know that RAM air works. Any LS1Tech search regarding the subject will lead to documented improvement data.
https://ls1tech.com/forums/generatio...air-worth.html
I have spent a lot of time & $ to improve the effects of RAM air on the MUNSTER, as well. Perhaps, it's the term RAM (rapid air movement) that doesn't properly define what is happening. Regardless, there is a power improvement when the intake has in-line access to air moving @ the vehicles speed.
12-03-2011, 06:34 PM
#4
RAM Air (Rapid Air Movement Air)
Ram air works, while it might not pressurize the air substantially it does make it easier for the engine to breathe as the engine will have the benefit of the vehicles momentum to create a constant flow of air into the air box instead of just using the engines vacuum to suck air into the air box.
Ram air works, while it might not pressurize the air substantially it does make it easier for the engine to breathe as the engine will have the benefit of the vehicles momentum to create a constant flow of air into the air box instead of just using the engines vacuum to suck air into the air box.
12-04-2011, 12:07 AM
#6
Yah,
Posted the "Ram air Myth" document along w/ just one of many "LS1tech links" showing that RAM air is effective, in hopes that people would actually read each & then comment on either as it applies to their experience.
The "Ram air Myth" document is correct based on the math & principles that the author uses to make his argument. However, his argument is based on the concept that RAM air does not add pressure @ vehicle speeds. Further, that faster airflow doesn't help due to the decrease in air pressure that it creates. The author only looks @ what is happening in front of the manifold & ignores what is happening inside the intake manifold. For this reason, he is incorrect.
I have measured the effects of RAM air on the MUNSTER. Before RAM air, the MAP would drop to 94kPa @ WOT @ 70 MPH. After RAM air it only dropped to 96kPA @ WOT & 70 MPH. Although, this is only a 0.28 psi increase, it is more. So, RAM air does have a pressure effect inside the plenum. The added speed of the air entering the plenum is high enough to fill the plenum faster than the pistons can empty it. Have not yet measured @ lower speeds to find where the cut off is, but, RAM air should be effective from approx. 37.5 MPH & up in an LS1.
Posted the "Ram air Myth" document along w/ just one of many "LS1tech links" showing that RAM air is effective, in hopes that people would actually read each & then comment on either as it applies to their experience.
The "Ram air Myth" document is correct based on the math & principles that the author uses to make his argument. However, his argument is based on the concept that RAM air does not add pressure @ vehicle speeds. Further, that faster airflow doesn't help due to the decrease in air pressure that it creates. The author only looks @ what is happening in front of the manifold & ignores what is happening inside the intake manifold. For this reason, he is incorrect.
I have measured the effects of RAM air on the MUNSTER. Before RAM air, the MAP would drop to 94kPa @ WOT @ 70 MPH. After RAM air it only dropped to 96kPA @ WOT & 70 MPH. Although, this is only a 0.28 psi increase, it is more. So, RAM air does have a pressure effect inside the plenum. The added speed of the air entering the plenum is high enough to fill the plenum faster than the pistons can empty it. Have not yet measured @ lower speeds to find where the cut off is, but, RAM air should be effective from approx. 37.5 MPH & up in an LS1.
