| Re: Perhaps I was wrong....40HP? For you Tony! |
Subject: Re: Perhaps I was wrong....40HP? For you Tony! by jsup on 2008/12/23 13:14:55 Quote:
My understanding is that it makes no difference. Air rides on a small layer of air (if that makes any sense) and since the air going through the path to the cyl never actually touches the surface of that surface directly, it has zero effect. There's a specific technical engineering term for it which I can not remember right now. Polishing or "rough" finish is all a myth. As far as wet flow vs. dry flow in the intake, the answer is the same as for heads. Most leading manufacturers have evolved past the hack, guess, and flow method as Beach Bum has described. They use a combination of CAD and wet flow to get to a design, then test it in a Spintron rigged with high speed cameras. What BB describes, is an antiquated method by today's standards. This is not one company's propaganda, it's pretty much industry accepted. That's not to say that what BB describes has no value at some point in the process, it's just not how development is done anymore. It's too expensive and time consuming. Better products can be developed faster and more cheaply using modern technology. |
