slow 2K2GT

Alright I did some measuring today and I am going forward with this project.



Sides, top and bottom will be made of 3/16 aluminum, TB flange will be made of 1/2".



From the inside edge of the intake manifold runners I am going to measure 3" in and cut so I have straight runners and a flange. Here is a crappy paint picture that I made up, an arts and crafts mini model out of cardboard and a few other shots to maybe help out show what my plans are.

HotBlue02

I am not sure exactly what a box intake manifold is. Looks like an interesting idea but please explain it a lil more for me.

slow 2K2GT

A box manifold will get rid of the long runners and 90deg bends which air doesn't like. I will be able to slope the furthest end of the manifold as you see in the pic with the cardboard to direct the air into the small runner as opposed to the air slamming into a flat surface and then taking two 90deg turns before it hits the motor.



Also I will be able to tap the rear of the box for vac sources and install all the sensor out of sight which will compliment my wire tuck.

Stocker

Modifying the surge tank would be a spiffing exercise in welding sheet aluminum to cast, but unless you are also going to do some serious rework to the mouths of the runners, you may as well skip it. And be aware that you'll be shooting more for a screamer than a daily driver with a surge tank 1/2 the size of the original (well, as much as an IM can affect the powerband)

Turboron_99

Stocker haha see the numbers on the Cardboard version, i believe that is a "Small" version of the Mani, I just believe that was to help visualize, i would like to say he wouldnt go through the trouble and make a the surge tank that small.



I would almost rather start off with a Evo Aftermarket mani...

slow 2K2GT

^Quite correct but the EVO mani I am looking at is $1000 so it requires a little saving, for now we are working on this project to see possible results. I am opening up the runner throats to just over the size of the ports going into the head as well the stock TB is being opened to 58mm to provide additional flow.

songee623

here is a good site for a stock tb bore http://www.maxbore.com/ got mine done there. They made the front bigger and rear and put a bigger butterfly in it then you have to adjust the gasket to fit the tb afterwards.

slow 2K2GT

Little update on the progress.



Here are the manifold parts traced out on to a 3/16 piece of aluminum, my stock intake manifold cut and placed on its mating piece appropriately.

187sks

It looks interesting. I want to see dyno numbers.

Stocker

Wow I didn't realize you wanted runners that short. If the box is to attach directly to the runners as shown, it might be tuned way above the speeds your engine can turn, nevermind the power band.