KingOnso
Newbie
Hey Steiner. Is this deal still up for grabs? I live in oakbank and could come pick it up! What kind of bottle would you take for it? Hahaha also did you notice any gains with that ram air? Just picked up an 08 LTX that needed some serious TLC so I'm also tinkering with it while I have it in pieces.
All yours if you like.
UP Michigan rider
Expert
Oh lord another "Air box mod" thread.
UP Michigan rider
Expert
Pressure Wave Harmonics
Air flowing into your cylinder head's intake port doesn't move in a straight line while the valve is open, then politely stop in its tracks to await another valve opening. When the valve closes, the moving column of air slams into it, then compresses and bounces back like a spring. This pressure wave travels backward at the speed of sound until the intake runner opens up or it hits something, and then it bounces back toward the cylinder. This is the "first harmonic." The pressure wave actually bounces back and forth two or three more times before the intake valve opens again.
Intake Tube Pulses
The resonator in your intake is technically known as a Helmholz resonator, an acoustic device used to control pressure wave harmonics. Air bouncing back out of your engine and into the intake tube doesn't do it in a single pulse the way it would in a single intake runner; the multiple pistons put out pressure waves at their own intervals, and some of those are going to try to bounce back in while others are going out. The result is a "clog" or high pressure area in your intake tube that ultimately limits airflow through almost the entire rpm spectrum.
The Resonator
Adding an expansion chamber to the intake tube forces air coming back out of the engine to slow down to fill the cavity, thus expending a great deal of its energy and slowing the pressure wave reversion. This slowdown allows fresh air to flow toward the engine without fighting pressure reversion waves the entire way, thus aiding in cylinder filling. Since these pressure waves are essentially sound, giving them a place to expend their energy before exiting the air filter box ends up dampening the intake noise and quieting the engine. Thus, the resonator helps to make the engine paradoxically quieter and more powerful.
Air flowing into your cylinder head's intake port doesn't move in a straight line while the valve is open, then politely stop in its tracks to await another valve opening. When the valve closes, the moving column of air slams into it, then compresses and bounces back like a spring. This pressure wave travels backward at the speed of sound until the intake runner opens up or it hits something, and then it bounces back toward the cylinder. This is the "first harmonic." The pressure wave actually bounces back and forth two or three more times before the intake valve opens again.
Intake Tube Pulses
The resonator in your intake is technically known as a Helmholz resonator, an acoustic device used to control pressure wave harmonics. Air bouncing back out of your engine and into the intake tube doesn't do it in a single pulse the way it would in a single intake runner; the multiple pistons put out pressure waves at their own intervals, and some of those are going to try to bounce back in while others are going out. The result is a "clog" or high pressure area in your intake tube that ultimately limits airflow through almost the entire rpm spectrum.
The Resonator
Adding an expansion chamber to the intake tube forces air coming back out of the engine to slow down to fill the cavity, thus expending a great deal of its energy and slowing the pressure wave reversion. This slowdown allows fresh air to flow toward the engine without fighting pressure reversion waves the entire way, thus aiding in cylinder filling. Since these pressure waves are essentially sound, giving them a place to expend their energy before exiting the air filter box ends up dampening the intake noise and quieting the engine. Thus, the resonator helps to make the engine paradoxically quieter and more powerful.
No one?
Macheater
VIP Member
- Joined
- Feb 7, 2006
- Messages
- 733
- Age
- 59
- Location
- Niles, Ohio
- Country
- USA
- Snowmobile
- 2006 Apex GT, 2002 SRX700
- LOCATION
- Niles, Oh
Looks very similar to my Fix lid except the outerwear fits better on yours. You WILL hear ALOT of intake noise!
I'm heading to the dyno with my 06 next week. I may compare stock vs ramair lid.
I'm heading to the dyno with my 06 next week. I may compare stock vs ramair lid.
Thanks
Yes noticed how loud it was loading on the trailer
Just don't want it to run lean
Yes noticed how loud it was loading on the trailer
Just don't want it to run lean
Macheater
VIP Member
- Joined
- Feb 7, 2006
- Messages
- 733
- Age
- 59
- Location
- Niles, Ohio
- Country
- USA
- Snowmobile
- 2006 Apex GT, 2002 SRX700
- LOCATION
- Niles, Oh
Running lean will not be an issue. I ran mine with cut lid for a year with no problems.
I highly recommend that you start bringing earplugs with you on your longer rides. With my open intake and aftermarket exhaust, I can't ride more than 2-3 hours without suffering from noise fatigue. It really does get tiring. Ear plugs allow me to ride much longer without the constant noise issue.
I highly recommend that you start bringing earplugs with you on your longer rides. With my open intake and aftermarket exhaust, I can't ride more than 2-3 hours without suffering from noise fatigue. It really does get tiring. Ear plugs allow me to ride much longer without the constant noise issue.
good thing it's my 16 year old sons sled...lol
