Project 1 from Zedron - Honda B16 Intake Manifold

[zedron]

So I started messing around a little today and decided to make an intake manifold for a friends car. Didn't get any welding in because I am designing/building as I go and its going slow. I had to do the main piece twice because I didn't make my measurements correctly for the bends in the break the first time. When I did the first one it was all twisted and wouldn't have lined up, lesson learned.
Pics so far:

The flange on the bottom is one I had CNC'd in a batch for when I make ITB manifolds, so I already had it.

What I am going to do next is cut out a plate for one end and then machine out a 3/8 piece of AL plate for the other end cap where the throttle body will bolt to. Once that is done I will close up the big gap with a piece of sheet and add the runners and then the flange.
Not much so far for 4 hours of work, lol. If I didnt mess up the first one I would have been better on time.

[zedron]

Forgot to put correct thread title with category listed. Didn't think about it since I put it in the forum which the category falls.

Project 1 from zedron. Category: Custom Automotive on/off road Welding

[Tanh]

How about some plans on what the manifold is supposed to look like? I'd guess by the looks of it that piece of sheet metal will be the plenum and you'll cut and weld for pipes from the plate to the plenum, right?

What you might want to consider is the huge amount of vibration those I4s put out. Especially if it's gona be a DD reving low in stop and go traffic. Steer away from stainless. Also I'd say go with something thicker than 14 guage at a minimum. Maybe find a more ways to support it by anchoring it to the engine.

Is this going into a civic? In my tuning days I used to have a sweet EK9 with a B18c NA. Sold it for an MR2 after a few years. Though I needed a change but still miss it.

[zedron]

You are right. The big aluminum sheet is for the plenum. I haven't figured out how I want to make the runners yet though. This one will either go on my friends turbo non DD EK hatch or my non DD turbo Integra. I am going to have it flow tested against an Edlebrock manifold to compare when finished.

[zedron]

Figured I would post the finished product up minus the injector bungs. I had to mill those from some solid AL bar. No pictures because I forgot to take some before I put it on car and car is now gone.

[youngnstudly]

How thick is that flange that you had CNC'd? The end result looks awesome! It looks like you've made a few of these prior to this one, as it looks professionally done. I've messed up more than my share of sheet metal in the metal brakes at my old job. It's really easy to do, especially if you don't mark your bends clearly, or you are in a hurry!

This post reminds me of how much I want to get an A/C tig welder for welding aluminum and magnesium!

[sportbike]

Figured I would post the finished product up minus the injector bungs. I had to mill those from some solid AL bar. No pictures because I forgot to take some before I put it on car and car is now gone.

What is the throttle body off of? Do you know what size it is?

I am thinking about making a single TB intake plenum for my turbo bike an dam looking for TB options.