Thread: Fiberglass Intake mainfold

In for VE intake mani!

Will def take one if its based on the N1 manifold

as of right now its going to be a 7.5" runner and im still working on idea's for the plenum i want to get even air flow to all runners, im looking at the k20 IM for idea's and othere places to

im going to take some time off from work soon to get this all done sooner, right now im doing paper R&D

Also interested in a VE one.....

looks like this is going to be for a VE huh... everyone wants a VE one lol

Supply and demand.

I will be sending my stock manni sometime this week

it will be DE and VE there are more DE's & DET's

So what's the logic behind a certain plenum size and the lenth of the runners? After a lot of reading there seems to be no concencus on this.

A lot of people claim large plenums with short runners, while most actual aftermarket im's have tiny plenums and shortish runners.


Something I've been thinking about is the cross sectional tubes used on a lot of motorcycle headers. It "fools" the engine into thinking the primary is actually longer than it really is, because it's "borrowing" space from the adjacent primary.

Would this concept perhaps work in an IM manifold? I.e. short runners, with smaller diameter cross sectional tubes between 1&2 and 3&4, allowing the cylinder to draw air from 2 intake runners on it's downstroke, while maintaining ideal runner lenth for high rpm?

^Jump on the train. Your 4door needs one, your 4door wants one .