CF intake pics- and our new friend's car- More pics added 11-29-09
11-30-2009, 07:49 PM
#46
Nordschleife Master
The throttle plates at the top of the runner inthe lower picture is interesting. Pretty much makes the shape of the bell non-critical. It would be very interesting to see what sits on top of that throttle assembly. IIRC it's a plastic cover with internal runners. If done correctly, the pulse relationship between the middle cylinders could be adjusted with the runner routing in the cover. Cool stuff!
When the short runners are on, the butterflies open and expose a single plenum. When the long-runners are off, the air has to go to the bottom plenum and then run thru the long curled runners. I think Ford fitted it in a focus as a publicity stunt, so one _CAN_ design a good intake manifold that fits under the hood, no matter how unsuccessful the Porsche effort with 928 S3-S4-GT-GTS.
The 5.0 Cammer has another pretty nice intake manifold:
