custom stainless intake
 

My custom stainless lobster back N/A intake

very nice welding, great work.

I would love one of these, but fiberglass wrapped to help keep intake temps down.

I can sell you this one if your interested? All i have to do is weld the flange on yet. Its cut already just need to weld it on

I hate to point this out, as you've done so much nice work on it, but how do you intend to compensate for engine movement? Even with solid motor mounts there is a little bit of movement.

Well once it bolts up to the throttle body itll sit there like the stock intake and i have a spring mount that will support it close to the maf. So should be no problem

+1

I'm sorry, but having that long, honkin' thing hanging off the TB is still mass dealing with vibration - i.e. physics.
Even if you "spring mount" the AFM, that's even more mass...

Also, stainless steel has this nasty habit of soaking heat.
That duct is hanging over the exhaust exit out of the engine.

There's a reason why Mazda designed it as a rubber flex unit.
If they didn't need have to worry about flex and vibration, a plastic unit would've been lighter and cheaper to install.

I agree that your welding skills are top-notch, but I question the practicality of this application?


-Ted

If i was using the car more than just weekend cruising id be mor concerned about it. If it gets to hot ill ceramic coat it like i did all my intake manifolds

+2, agree with all that Ted & Gunny stated above. WRT the vibration issue, another thing to consider is that your design will effectively transfer engine vibes directly to the AFM, which most likely will cause your car to idle/run like crap. Reason being is the AFM uses a spring loaded opening (flapper door on S4, cone on S5) to measure airflow. Add vibes (or fail to effectively dampen vibes) to such a design and you can guess what happens to the accuracy of the airflow measurement - it will jitter. Since the AFM is the primary sensor used by the FC ECU to control fuel, measurement jitter is very likely to bugger up your idle/running performance.

Meh we will see. Worth a try

Give it a shot. It seems I've spent at least half my time redoing stuff that didn't quite work out the way I had envisioned on my own project. It didn't work, but it was always instructive. :lol:

Heres a picture of it sittin by itself. Tacked the flange on today

Seriously. Worrying about intake vibration? It's just an intake tube... I seen many FC's with zip tied flow meters and cobbled together eBay piping intakes.

Nice work man. I hate cutting stainless so i know some dedication went into this.

^ haha thanks man. I completely agree. I know mazda took that into account when engineering the maf

You should go look up the term: "work hardening"
Vibration (to the AFM) is not what I would primarily worry about.
I would worry that it would crack...


Sure, FC owners are cheap and usually on the young (read: kids) side.
The car might run like shit, but most of these types of owners are just happy to drive down the road and back...
Sadly, having the car run at it's best is not something they can afford to do.
So, I don't see what your point is...?


I even went to compliment his work too...
With this kinda skills, I would suggest looking at other, more better applications of such skills.
Exhaust headers would be an easy example.

As you have already pointed out, FC owners are cheap asses.
The OP mentioned possibly offering this type of product for sale?
Unless priced ridiculously low (like under $20), I doubt it would sell to maybe a select few who wants to own something different without flinching at the price tag.
We're just offering constructive criticism...


-Ted

I think some are being to harsh/negative.

Keep up the good work man, test it and I am sure you will sell some. Need more people out there making products and doing the hard work ;)

Yep... some pretty high level nitpicking in this thread

I also have started an exhaust header, cut the flange out already and waiting for my fittings. I also have a fuel rail blank on the way to make fabricate my own fuel system. If the intake does not work ( which i think it will because of the silicon adapter that connects to the maf) than it was worth a try. It was fun and a learning experience building it.

I understand the term work hardening just fine. I don't know what you do for a living, but I am a machinist and a welder full time. I work with various steels, aluminum's, and plastic on a daily basis. if you actually believe that a flow meter will work harden and crack from vibration, you really need to research your materials.

Ps. Can't wait for your response. Your responses to people who "test" you are always fun.

Everyone who is Sandy please fill this out...


http://i19.photobucket.com/albums/b1...ps7a7f4dcc.jpg

No problem...

Started a business with a partner a few years ago DESIGNING, ENGINEERING, AND TESTING products for the FC3S primarily.
We managed to clear a quarter million dollars of sales in year #2.

I used to do this seriously.
Specifically for this car...
I'd like to think that I know a thing or two about the FC3S, it's customer base, and supply and demand SPECIFIC for the FC3S.
I really don't care what your "qualifications" are, but your claims imply that you really have no idea what you are talking about.
As for products SPECIFIC to the FC3S, I doubt "yours trumps mines" in this case, so you can drop the resume boasting now...
You can drop the ape chest pounding.
You really don't know who you're fucking with.
I'd suggest you do your research before you start touting your credentials.

And, just to keep this OT for the OP...
It's all constructive criticism.
You're welcome to ignore the whole thing.
As mentioned above, I have experience with a thing or two trying to market products to FC3S owners.
It's frustrating to THINK you have a viable product to sell, when in reality, it doesn't.
Just trying to help you steer your labor and efforts to something that would sell better.
That's it.
Then people started the resume comparing...
You make your product.
You try and sell it.
If it sells, good for you.
I didn't say NOT to sell it.


-Ted

This guy... lol

Wow this thread is getting out of hand lol wow. Just showing off my intake and people got guns drawn haha

I can see the concern. A rigid body fixed to another rigid body exposed to vibration is generally inviting fatigue due to cyclic stress. The question is whether the magnitude and frequency of the vibrations are enough to cause failure, which is dependent on things like material properties and temperature. My personal feeling? It wouldn't be too hard to incorporate an isolator between the intake and the body. Either way, worst case is the mount breaks. It's not the end of the world.

Yeah.
I thought so.


-Ted

If you think its bad for it what about this, All this weight on the wastegate? Hood exit dump. I know I ill be okay beacause of the vibrant silicone coupler holding the maf on.

Personally, I would not let the turbo exhaust manifold handle the weight of the wastegate (AND turbo).
I would add extra braces and take the weight load off the turbo exhaust manifold as much as possible.
This is for TUBULAR designs.

A cast turbo exhaust manifold nixes the whole discussion.


-Ted

I'm no keyboard tough guy. Nor do I have the time to debate endlessly on a forum over a useless topic.

-Not a child

The irony of it all...

Typical FD owner...
Think they are above it all.

You got something to say to ME, send me a PM.
Unless you've got something significant to contribute to this thread, please GTFO.


-Ted

Nice work!