rx7 SE

iTrader: (5)

I am in the process of building myself a custom intake for my 87 TII. I've had a few people tell me that turbulence is good for an intake because it will cause the air to move faster so this means the more bends the better. I personally think the less bends the better air flow there will be. Who is correct?
Thanks,
Anthony

seandizzie

iTrader: (1)

I think it has something to do with mixing air with the fuel and spreading out in the combustion chamber for an even burn, not sure though.

rx7 SE

iTrader: (5)

That makes since..... i think ur right?

telum01

yes, a little turbulation can help the mixing of the air and fuel. imagine pouring two different liquids into a blender. they kinda swirl around and they do mix a little, but that's it. then turn the blender on. that's what the turbulence is for.

the thing to remember on your project is that a little turbulence is good, but a bunch of **** blocking the airflow to make that turbulence is bad.

jgrewe

iTrader: (1)

The fewer bends that you can get the runner lengths you want the better. The ideal intake tract would be a straight tube that gets smaller in diameter as it gets closer to the port.

The turbulence many speak of is a way of creating an 'air bearing' for the high velocity air in the center area of the tube to move easier. There are other tricks but in your design I'd just worry about Helmholz resonance and making sure you don't go too big in runner size.

diabolical1

iTrader: (3)

okay, bear with me here a bit. i understand Helmholz resonance as it applies to sound, and maybe i just need some sleep, but i'm having a bit of trouble wrapping my mind around how it applies to the intake design. can you help me out a bit?