# attn Domantion **URL:** \ **Category:** PittSpeed Automotive\ **Created:** [October 28, 2006, 2:02pm UTC](https://forums.speedlife.net/t/attn-domantion/185885 "2006-10-28T14:02:45Z")\ **Posts on this page:** 1\ **Showing post:** 52
**Author:** ![fshowcars](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/fshowcars/32/5937_2.png) [@fshowcars](https://forums.speedlife.net/u/fshowcars)\ **Post date:** [January 2, 2007, 11:22am UTC](https://forums.speedlife.net/t/attn-domantion/185885/52 "2007-01-02T11:22:26Z")
> [@Breakfast Survey for Project](https://forums.speedlife.net/t/breakfast-survey-for-project/26901/35): > > The idea of having a smooth finish on the runner is much debated. The idea of a rough surface on the ports it to premote a boundry layer of air that isn’t moving. Not a bad idea in theory. Now if you take a maganifying glass to so called polished ports there are still going to be alot a surface abrasions that will create a boundry layer. The injector is aimed at the back side of the intake valve spraying atomized fuel at 50psi. You are not going to have fuel dropout. The holes in the runners probably doesn’t need addressed unless you have absolutely no research in lsx heads. There was a cast in lump in the top of the runner where the base of the rocker stud bolts in. ok… i think the injector design is the main factor when atomizing the fuel… the layer of air over the abrased surface will cause the ‘air boundry’ that is talked about, but most sense would be to take a lowered grit sand paper perpendicular to the intakes airflow, so that you don’t get fuel drop ‘runners’ that allow the fuel to pool in the direction of the airflow, right?.. then again, a lot of that has to do with the method used when polishing and the direction it was polished, ect ect… i have done no research in lsx heads… just asking questions --- _[View the full topic](https://forums.speedlife.net/t/attn-domantion/185885)._