Constructing your own Intake Manifold

[RETed]

Problem with running TB inlet (technically "outlet") to the runners inline is trying to get the airflow to balance between the runners...
Perpendicular surge tank plenums are popular due to the configuration of the engine - longitudinal - versus location of the IC - up front.
Look at all the popular front-engine, RWD, longitudinal located running perpendicular surge tank plenums:
2JZGTE
1JZGTE
RB26DET
SR20DET
VG30DET
The exceptions:
7MGTE
RB25DET (can this be legit with the RB26 "big brother" listed above?)
VR38DET (current R35 engine)

You can take advantage of turbulent flow when using a perpendicular surge tank plenum, but it's still tricky to get total equal flow between the runners.

This is a daunting task to iron out all the details, but if you do success, it should reward you with big gains.


-Ted