|
|
Post by Scoot Tech on Oct 2, 2011 7:37:26 GMT -5
Using a $5 brass bristle dremel attachment set from harbor freight and some mothers mag and aluminum polish, at low speed CAREFULLY polish the inside of the carb taking extra care not to let the metal on the attachment dig into the carb walls. I use the polish liberally and just spray every passage out with a can of carb cleaner.
I also did this with the intake manifold. I did notice a difference but i have done so many mods before taking it out for a spin, it could have been a number of things
Nice smooth surfaces promote air/fuel flow.
|
|
|
|
Post by 50dude on Oct 2, 2011 18:56:21 GMT -5
Nice tip, I have always had good results with the brass wire attachments.
One word of advice though, polishing the carb and intake port can worsen performance, fuel/air mix needs a slightly rough surface to mix properly. Can't think of the word, but think if water on a mirror or something shiny - it seperates into little droplets.
|
|
|
|
Post by Scoot Tech on Oct 2, 2011 23:35:30 GMT -5
I may just have to rough it up a little bit then lol
|
|
|
|
Post by yoshidawg on Oct 3, 2011 19:52:58 GMT -5
Atomization....is the word
|
|
|
|
Post by mainepeace on Oct 4, 2011 15:06:08 GMT -5
Laminar air flow is when airflow is perfectly parallel to itself. That is what you want. There is a smooth boundary layer of slow moving fluid that develops along a perfectly smooth surface. This is generally thought to be caused by molecular attraction between the fluid and the surface, or friction.
It's actually not good to have that layer as it slows down the overall airflow. Similar to a golf ball, having small imperfections or dimples in the surface help to actually improve the airflow speed. Think of sliding your finger along a smooth metal surface. It sticks to it if you have oil on your fingers. Now think of a vibrating surface, like the old vibrating football game where the players skate along the surface, or even an air hockey surface. (Ice skating is another example). The vibrations, or small air eddies, or liquefied ice all create a cushion that allows the main body of fluid (or air) to flow without the friction.
That's why it's not good to have a mirror smooth port & polish. Too many imperfections impede airflow, to few impede for a different reason. It's finding the perfect finish that takes many many years to find out.
Greg
|
|
|
|
Post by Scooter Elements on Oct 4, 2011 15:16:11 GMT -5
oh how i miss harbor freight tools!
|
|
