M20 short runner intake manifolds?

[Rocla]

323i/320i has smaller diameter throttle body.

[e30littlechris 22]

I've been working on a short runner intake for a N/A engine. I'll post up some pic's when I can get to it.

[DPI]

Would there be enough interest in some short runner manifolds?

I've been thinking about making up a few of them in my spare time.

[rThor432]

I was behind that beast about a Year or so ago. Sounded awesome. Gorgeous color too

It's the perfect example of an early model E30. Everything is well done and extremely tasteful.

[mattdk318i]

I have. Mitch M ran one on his 2.7i for a while. I havent put mine on yet.

The 323i manifold has constant-sized runners whereas the 325i manifold is tapered. If I remember correctly.

I was behind that beast about a Year or so ago. Sounded awesome. Gorgeous color too

[rThor432]

Has anyone ever heard of someone using a 323 intake manifold?


~Zar4

I have. Mitch M ran one on his 2.7i for a while. I havent put mine on yet.

The 323i manifold has constant-sized runners whereas the 325i manifold is tapered. If I remember correctly.

[swimstarguy]

Is there any benefit to using the 323 mani for FI applications?

The shorter runners would help the top end but are the runners any wider?

Has anyone ever heard of someone using a 323 intake manifold?


~Zar4

[rThor432]

rThor--You have that backwards; the first picture is a 325i manifold and the second picture a 320i/323i mani

Whoops! Missed that mix-up, thanks.

[Stu]

rThor--You have that backwards; the first picture is a 325i manifold and the second picture a 320i/323i mani

[rThor432]

At least you are honest. Gotta give credit for that.

[Hawt drift chick]

I don't have the knowledge or the ability to make an effective one myself. Sure i could make something, but it'd probably perform worse than stock.

[rThor432]

Dbilas has an awesome short runner manifold, but it will run you quite a few quid.

I would make my own manifold (if I were you). Sounds like a fun project. Are you any good with a hammer, saw, and welder?

325i-


323i-


There is a pretty big difference that is more visible in person. If you cant tell the difference at a glance look at the angles of the runners.

[Hawt drift chick]

I've seen them before, i want straight runners though.

[rThor432]

Just post pictures of it period. A short runner intake looks completely different than a stock one.

It isnt anything special like a plenum with 1 inch runners or anything. It has shorter runners than the standard "i" manifold, with the same basic shape.

I'll take pictures of it & post them up when I get home. I'll get comparo pictures at the shop on Saturday.

[Erick]

Just post pictures of it period. A short runner intake looks completely different than a stock one.