Let’s have another discussion. This time TrickFlow heads.

Bobzilla said

Theoretical question. Bench racing, you could say.

Without dyno testing or track testing, what do you guys "think" that vain may do to the column air coming through there? Would it redirect the air from cylinder wall side of the port (left side of PRH's picture) back toward the opposite side of the valve where it's less restricted by the cylinder wall? Would it try to keep the air from the other side of the port (right side of PRH's picture) from going toward the side of the port that is close to the cylinder wall (left side of PRH's picture)?

Click to expand...

I’m going to eat and then reread that. My thoughts are like we said above I personally think it may help in low horsepower applications. The air speed across the top of the port is probably 1/3 of what the short side speed is. And has an easier entrance into the cylinder. (No sharp turn) As far as directing flow after I do everything I can to in most cases SLOW the airspeed down at the shortside I reshape it to direct air towards the center of the port and away from the wall on the cylinder wall side. I think the bowl needs volume to perform not a big obstacle in the bowl. But Hey I’m just a retired millwright that likes to make little pieces out of big pieces.