Inlet Manifold Design - Triple Injectors
Turbo Mini Forums

Any way to drill the head, and adapt a Mitsi GDi system ? lol

9.85 @ 145mph
202mph standing mile
speed didn't kill me, but taxation probably will

Have you thought about arranging them for a multi stage application. Im designing and making a plenum for my dissertation this year and making use of smaller injectors close to the head for lower rpm, and larger injectors further up the runner / above the runner in the plenum for higher rpm, with it being higher up the turbulence helps to atomize the fuel better hence the larger injector isn't as much of a problem, might be a nicer way of getting some more throttle response and a neater solution?

I'm not sure that better atomisation is a benefit in the A Series application.

Vizard makes reference to this on his website.

We are trying to get a specific slug of fuel into a particular cylinder. Fitting the injector too far back would make this more difficult.

Saul Bellow - "A great deal of intelligence can be invested in ignorance when the need for illusion is deep."
Stephen Hawking - "The greatest enemy of knowledge is not ignorance, it is the illusion of knowledge."

Edited by Jay#2 on 23rd Aug, 2009.

No,

If I go ahead with the triple (on the right) the centre will be first stage so no favouritism (sp?) and the outer two will be the second stage ones fired together, so any favouritism is cancelled out.

The problem with my original design (left) with staged injection is trying to balance out favoured valves by using the code. I'm sure it's possible, but a symettric pattern should be a lot easier.

Schrödinger's cat - so which one am I ???

I honestly believe that given the distance from the injector to the valve and the port size in between, placement of the injector will not favour a particular valve.

Once through the port entry between the pushrods the fuel will go to whichever valve will take it.

Saul Bellow - "A great deal of intelligence can be invested in ignorance when the need for illusion is deep."
Stephen Hawking - "The greatest enemy of knowledge is not ignorance, it is the illusion of knowledge."

Saul Bellow - "A great deal of intelligence can be invested in ignorance when the need for illusion is deep."
Stephen Hawking - "The greatest enemy of knowledge is not ignorance, it is the illusion of knowledge."

Ah I see, interesting!

Ah I see, interesting!

This is the actual article relative to his experience with the Mini.

http://www.gofastnews.com/board/technical-...n-dynamics.html

Saul Bellow - "A great deal of intelligence can be invested in ignorance when the need for illusion is deep."
Stephen Hawking - "The greatest enemy of knowledge is not ignorance, it is the illusion of knowledge."

I've been making swarf over the last couple of days:


Slight revision to the design - decided to mill off a lot of the unnecessary material.

Start boring tomorrow.

Saul Bellow - "A great deal of intelligence can be invested in ignorance when the need for illusion is deep."
Stephen Hawking - "The greatest enemy of knowledge is not ignorance, it is the illusion of knowledge."

It's a lot of machining/milling etc. isn't it ???

Same problem for me, also welding up a large plenum hence my question a while ago about the potential use of CF (or GRP) for the larger bits.

What about a small batch number "prototype" cast manifold if there was enough interest and could agree a common design ???

Just a thought, another of my mad moments.....

Schrödinger's cat - so which one am I ???

It is a lot of machining, but I've just done one side of the next block in under two hours.

I enjoy the machining. It's quite therapeutic after a stressful week.

This is when I need a CNC Mill and someone who knows how to program it.

Edited by Paul S on 4th Sep, 2009.

Saul Bellow - "A great deal of intelligence can be invested in ignorance when the need for illusion is deep."
Stephen Hawking - "The greatest enemy of knowledge is not ignorance, it is the illusion of knowledge."

Schrödinger's cat - so which one am I ???

Making good progress:

Saul Bellow - "A great deal of intelligence can be invested in ignorance when the need for illusion is deep."
Stephen Hawking - "The greatest enemy of knowledge is not ignorance, it is the illusion of knowledge."

I want a laithe and a garage big enough to put it in!

Looks like top work.

Lmao..

'plenumbillium'

Flash bugger!!

Speak to Jimster about a CNC miller, I was under the impression he was perhaps in posetion of one but no where to put it.

I think that it would take me longer to make these first two using a CNC Mill. Too many new skills to learn to get the finished article. 3D CAD for starters.

But if these work and there is demand, I may take a drawing and finished article to a local shop to get a batch made.

Saul Bellow - "A great deal of intelligence can be invested in ignorance when the need for illusion is deep."
Stephen Hawking - "The greatest enemy of knowledge is not ignorance, it is the illusion of knowledge."

Done a little bit more in between cleaning stoves, sweeping chimneys and cutting down a tree:





Need to see what I can do on the inside. I don't want to take too much out as it may disrupt the flow, but I don't want the fuel spray hitting the sides of the holes.

Saul Bellow - "A great deal of intelligence can be invested in ignorance when the need for illusion is deep."
Stephen Hawking - "The greatest enemy of knowledge is not ignorance, it is the illusion of knowledge."