Quote:
Originally Posted by JGK95
Greg and Corey,
Won't the 'trumpets' at the back of the intake manifold improve if they are directed at the front? Even if at an angle? I've seen in car mags the BMW v-10 engine with various length trumpets measured to capture a better segment of air.
Thoughts?
Jay K.
|
That's an interesting question and one that I would have a really hard time predicting without doing some CFD. There could be some gains, due to "ram air," which is effectively velocity turned into pressure at the stagnation point. However, it would be hard to keep the same runner length as the others and the change in direction could reduce flow in the runner. I know the BMW engines I have seen have the trumpets all directed in different directions, therefore making them all the same length. The BMW runners also weren't as cramped and had more room for flow, so the big trumpets weren't interfering, per se. I am sure that resulted from an analysis so that they would all have the most similar pressure to pull from.
On another note, Lee's manifold on his car looks pretty good, although it requires a big hood.
Not the pics I was envisioning, but pretty pics none-the-less.
__________________
1984 Volvo 240 0-60: 11.2 sec. 1/4 18.6 @ 76 MPH
do beware of dem rods if you drive it to work
nah i dont drive it to work, ill find out which rods it has when one flies out of the block so i can measure it
http://www.cpeturbos.com