Interesting info about head porting.

[your_I.D.]

Very interesting read about head porting . 7 pages total. http://www.team-integra.net/sections...sp?ArticleID=4

[Fiero Brick]

Very nice article, thanks for posting it. There were some things in there that are news to me and some stuff that backs up what I've already read, both of which are awesome.

[blackbombshell95]

This one is pretty cool

III a. The Rule of Flow Capacity

To get more flow volume you increase diameter and shorten the length. Another damn rule of physics to memorize.

The engine has to get a certain amount of air to make power. The amount is flow volume. This flow volume tells you nothing about how fast that volume is going down the tube.

Remember, the slower wet air flows, the more chance for the fuel to separate out and become no longer suspended in that air flow. Nothing is simple in life is it?

Now with any rule, there are exceptions. When wet air is travelling fast in a straight line, it stays suspended. We all get that. However, when wet air reaches a bend in the tube, we have a problem with it travelling fast. Since fuel is heavier than air, it's harder to make it turn corners. It's like your chubby cousin and you (assuming you are lighter than your cousin) racing around a corner in your scooters. Because your cousin is heavier, he keeps on going straight instead of making the corner at the same speed. Fuel will separate out from air when it reaches a bend if the wet air is going too fast. The air will make the bend but the heavier fuel will want to go straight ahead and miss the bend. The solution? we must slow the wet air down at bends. How do we do that? we increase the diameter just before the bend. So you can have a smaller cross section on straight parts of a tube to get high flow velocity but a bigger cross section just before a bend to slow down flow velocity: all of this is done to maintain good flow quality.