Thanks for the posts/replies? I am now ,far less ignoant.
I few questions on the posts though:
-What is R/inches? Is R from the head of the valve to the beginning of the intake system , the inside lid of the air cleaner; Distance per R? I think I got it. R = restriction from vacuum?
-What is harmonic peak in reference to induction systems?Is it related to reversion? How about 1st 2nd and 3rd harmonics? What is the sencond and third?
The resonance provides a supercharging effect, can be quite significant.
A well proportioned plenum (or airbox, same thing, really) can increase the effect.
The primary (1st)resonance is strongest, the higher multiples decrease significantly, second or third are typically used due to packaging/reality.
The runner diameter on primary resonance also tends to have to be ~huge due to friction losses, second/third work out better for diameter as well.
Exhaust tuning works almost the same way but to create an effective vacuum, the gas temperature has a huge effect on tuning, as that is what determines the speed of sound in a gas. http://lmgtfy.com/?q=speed+of+sound+in+a+gas
Addendum to Newtons first law:
zero vehicles on jackstands, square gets a fresh 090 and 1911, cabby gets a blower.
EZ3.6 Vanagon after that.(mounted, needs everything finished) then Creamsicle.
