Contour Enthusiasts Group Archives Forums Modifications Zetec Performance Aftermarket Intake mani pic

This is an unsanded down one. Little update to the last post on mani`s. This is going to a zx2. Well have the dyno charts soooon... Hopefully

Interesting.

Im not exactly an expert, but I have some observations, and doubts about this intake setup.

Let's run it through

1. Intake runners are relatively short - indicative of high rpm tuning.
2. Intake plenum is relatively small - indicative of lower rpm tuning.
3. Intake runners extend into the plenum - results in turbulence and poor air flow.
4. Original intake manifold is made of plastic. Excellent at preventing heat soak. This one will require multiple spacers to achieve similar heat characteristics.

Runner 7 inches
ID 1.5
plenum 108 ci (zetec displaces 121.4)
Oh yea.. Forgot to mention I built this from the specs that a ford engineer specified for his car. I didnt do any calculations for this paticular manifold I was mearly the fabricator So if you want to argue with the guy on why and how and where and when I can give you his email adress. Hes only been doing this for 30 years

All the manifolds are usaully built around your application. Within limits. 7 inches is the max in runner lenght. Below 5 inches you have to do an inverted fuel rail mounting.

Most of my mani`s are based around top end power. If you want lowend your probably better off with the stocker. My mani`s dont come with egr hookups either.

Interesting.......keep us posted.

Sweet, please keep us posted.

Aaron

Not bad, but I'm just not a fan of having the TB on top like that. I'd rather have it on the side, kind of like most other intake manifolds are.