by 106-1194218389 » Mon Mar 31, 2008 12:24 am
Larry M.,
I laid the SSR back some more, not near the seat but closer to the top and I lowered the APEX height about .015 to .020" and it helped flow above .500" gained a couple but .550" up gained at least 10 cfm. I'll inch up on it. I am going to try raising the roof just a little and see what that will do. Everything you have suggested works. I am just going to ET bracket with these heads so I do not have to worry about class. I am getting really close to where I want to be. I am using Performance Trends Port Flow Analyzer software with their Black Box hooked up and it keeps track of some good stuff. One thing I like is it tracks stability of the port at each lift. It gives you a reading of depression bounce in percentage. So if you are flowing at 10" and have a 10% reading your depression is bouncing 1", let's say between 9.5 and 10.5". This seems to be a pretty good indication of turbulence. I am flowing at 6" and my average stability reading is under 1% usually aroun .7 -.5. Although .550" gained 10 cfm it's stability also jumped to 5.75% and the other lifts above .550" are around 1.7% and you can hear the port popping a little. Not as bad as some I have heard but still getting turbulence and separation.