Old Apr 25, 2009 | 02:12 PM
  #15  
Canada1's Avatar
Canada1
Too many posts.. I need a life!!
15 Year Member
Liked
 
Joined: Feb 2006
Posts: 795
Likes: 26
From: Canada
Default

Karlos had said:

"Got this from NMS today!
Gas flowed for more response and flow, Bronze Guides, Custom Stainless Valves, Seats Cut, Valves hand Lapped in, Diamond Faced. £647. "

A gas flowed cylinder head has been on a flow bench, as one cannot gas flow a cylinder head without one. (Well that is what you are paying for) I was hoping that Karlos would be kind enough to find out what the gas flow results were.

As far as flow testing being meaninless I beg to differ. Every F1 engine development program, every Nascar development team spend vast amounts of time and effort with flow benches to develop the most efficient port. Sure they have the latest flow benches, with swirl meters, tumble meters, wet flowing etc.. However, developing a port without a flowbench to test the results for port velocities, maximizing quality airflow around the valve
is not possible. The CVH port has a very odd swirl inducing shape, and it is very important to understand what is happening to the airflow in the port - cannot be done by guessing.
I also dont think any small shops use computational fluid dynamics software to aid in port development as this is far more costly than a $12,000.00 flow bench.
Reply