Making a intake manifold...

[dfw240_EE]

I have to say this is the best thread on here in awhile. I am actually an Electrical Engineer so my knowledge on this subject is rather limited. I know how to solder wires like crazy, but I can't weld jack. However my schooling in EE has given me at least some common sense even in fields outside my own.

The idea that the runner ID should be the same as the TB doesn't seem right. I view the intake mani as nothing more than a tube (TB) being split into 4 tubes (runners). The idea that a 3" pipe can provide enough fluid (air) for four 3" pipes doesn't quite seem right.

I have been reading the Corky Bell book on turbocharging and it was mentioning cutting the flange on the exhaust side between the exhaust ports so that the flange looks like 4 seperate small square flanges instead of a single long flange. This was done to prevent cracking as the manifold heated and cooled. He also did mention some info about material choice (the properties of the materials) in terms of the exhaust manifold. I will try and find the book and see what it says about the different materials and maybe it could be applied to the intake manifold

[Redline240]

Here's somthing I'm willing to do just to see the comunity come along faster. When my manifold is done, not soon by the way, I'd be more then happy to send it off to whomever else has one completed, just so we can get comparible dyno information and flow benching if you have one available.

Hmmm...come spring i'll HAVE to dyno my car, so i figured i'd pay a few extra bucks and put the stock manifold back on and see the difference. The only problem i can see is that i'll be tunning the custom one with a MAP and Q45 TB...i'm sure it would still prove interesting...

Any idea WD on how to blend the runners into the flange? Two different shapes, lol...