Originally Posted by phantom3 (Post 303127)

I looked more into this velocity stack (VS) issue and this is what I have found so far.

VS's are used on N/A motors in order to produce more torque. VS's essentially do the same thing on a turbo motor untill boost kicks in. This is when the air flow dynamics change. The engine is no longer sucking the air in, its more being forced in by the turbo (Duh).

In an N/A application the air speeds up as it travels down the VS due to vacuum. The point where it speeds up is the taper to the VS. Any obstructions (minor) pre VS don't have much effect.


In a turbo application we are dealing with compressed air (more molecules). As the air is crammed in and small disruptions have a more profound effect on flow paths and velocity. The turbo is creating the pressure but the design of the manifold (IC, piping, TB, ect) is providing the CFM to the engine through smooth and even flow.

When I ran the simulation the VS raised up 2.250" from the bottom, them flow was really good under no pressure. Once I added 30psi of boost, a lot of interference occurred around the bottoms the the VS....

Now I lost my train of thought.... fuck.



Actually, the flange that I'm using will be interchangeable with the Vivid motorsports one. I'll just send it out sans flange and you get the Vivid one Tig'd on... PI done.

Originally Posted by devils10 (Post 303152)

do u plan of making alot fo these or just one€?

Originally Posted by QuickSpool (Post 303992)

Would approaching a company that already makes CF parts be easier and cheaper to mass produce theses? I would guess they could take your rendering and have it rapid prototyped and then a mold created.

Looks great, thanks for the time and effort.

Originally Posted by ATE BALLER (Post 304010)

Me likes! Alot!

Originally Posted by nighthawk358 (Post 304011)

2 weeks for this sexy piece to be made?

Originally Posted by superskaterxes (Post 304021)

if u guys notice on the reg 2.3L the intake design is the same as the MZR-R. im loving this ish please get this done!!!!

Originally Posted by 06Speed6 (Post 304055)

Flow of a 3.2"sq port is:

441CFM @ 28"H2O
453HP @ 28"H2O
8.39FPS @ 28"H2O

1,697CFM @ 15PSI
1170HP @ 15PSI

2,147CFM @ 24PSI
1480HP @ 24PSI

2,401CFM @ 30PSI
1655HP @ 30PSI

EDIT #1 Mind you this is calculated without factoring in humidity, temp, altitude, port shape, port angle, volumetric efficiency, friction coeficient, or anything else that would restrict flow. These calculations are from a world where unicorns roam freely and all women are naked, horny, and hot.

EDIT #2 This is calculated for an ideal round port.

EDIT #3 The CFM is also calculated with the port flowing to the open atmosphere and not to a engine.

EDIT #4 The HP calculation is a generic CFM to HP equation that assumes stoich conditions and 100% efficiency.

Originally Posted by phantom3 (Post 304089)

Well shit. I'm not that far off. I got 1229.86111111111111 CFM for one runner.
Thanks man

Originally Posted by wassup61 (Post 304123)

How are you going to shield the MAF so it lasts longer than a few K miles. (blowthrough induces MAF failure quickly)

Originally Posted by StreetUnitMark (Post 304109)

If you come up dry I have the perfect guy in Canada to do that for us. He just visited too and he's ready to take on some projects.

Originally Posted by 06Speed6 (Post 304122)

Your numbers are probably more accurate than mine, but in the real world I can assure you that both of our numbers are very very very very far off. At least we can be fairly certain that this new IM will not be a restriction for anyone and the flow loss appears to be minimal compaired to the stock one.

Originally Posted by wassup61 (Post 304123)

How are you going to shield the MAF so it lasts longer than a few K miles. (blowthrough induces MAF failure quickly)

Originally Posted by superskaterxes (Post 304129)

thats not the MAF thats the MAP.

and BTW from my understanding the MAP should go AFTER the TB cause you arent measuring vacuum pre TB. just update your dwg to reflect that.

EDIT: ok maby that is the MAF im seeing sorry i misunderstood cause u diddent actually have a MAP drawn in. i wouldent do a blow through. its too hard to tune and will never run as well as pull through setup.

Originally Posted by 06Speed6 (Post 304133)

You can make a blow through MAF function quite well, especially since this is to be used with the Vivid system which is speed density.

Originally Posted by 06Speed6 (Post 304177)

While we are talking construction, I wonder if there is any info on the net on sizing the thickness of carbon fiber for boosted intake parts. Ill take a look around and see if I see anything.

Originally Posted by phantom3 (Post 304173)

Thanks Mark!
The first one I'm going to hand make myself, and then I'll base future efforts off of that. I'm pretty sure I can build a mani in 2 days including waiting for the CF to dry and TIG welding. While my buddy is welding I can be starting the next one. I'm guessing I can do 5/week with 1 mold.. more molds, more parts.

Originally Posted by StreetUnitMark (Post 304216)

Once you physically make one, see what your time is worth. If the results are favorable, I have no problem making it worth while for you to knock a few out a week or so in your spare time.

Originally Posted by 06Speed6 (Post 304220)

Found a couple links with some really good home brew carbon fiber info:

http://www.rotaryeng.net/carbon-intake.txt

www.racingcomposites.net:

You have to register for the racingcomposits forum, but it really has alot of good info.

It seems that you can make this stuff to be really really thin and hold alot of boost.

Originally Posted by superskaterxes (Post 304221)

also what are you gona do about the few vacuum lines we do need like brake booster and BOV/meth? is that what you were talking about with the tubing in the BAT spacer?

Originally Posted by wassup61 (Post 304123)

How are you going to shield the MAF so it lasts longer than a few K miles. (blowthrough induces MAF failure quickly)

Originally Posted by superskaterxes (Post 304129)

thats not the MAF thats the MAP.

and BTW from my understanding the MAP should go AFTER the TB cause you arent measuring vacuum pre TB. just update your dwg to reflect that.

EDIT: ok maby that is the MAF im seeing sorry i misunderstood cause u diddent actually have a MAP drawn in. i wouldent do a blow through. its too hard to tune and will never run as well as pull through setup.

Originally Posted by ATE BALLER (Post 304533)

Not true at all. Take it out and clean it every few months or so and it'll be fine. I wish you would stop going into every thread that says blow-thru in it somewhere and tell everyone how bad it is when it isn't. Just saying.

[/B]

Also not true. When I had the stock size housing in there it ran perfect, other than blowing the cheap couplers apart at 10psi. If anything, I'd say it ran alot better. It didn't have any choppiness or oscillation that it does in the stock airbox. Hell, when the couplers would blow off, it would still run fine, minus boost. It would get some weird cut if I tried to hammer the gas pedal, but I'd expect that without the turbo hooked up to the intake. I was deffinately able to make it home from work though on a few occations with no boost and it drove and felt fine. The only reason I took it off is cause I switch the housing with a 3" one when I got it all welded together and I have no way to tune it. I dumped money into a Tactrix cable and ECU Edit which turned out to be utter fail, so I have to hold off for now. I'm still in the process of unpacking since I moved into my house a few weeks ago, plus I'm getting married this Sunday and will be in Mexico all next week. After that, maybe I can put some much-needed attention back into my car.

Just my $0.02.

Originally Posted by stealthspeed6 (Post 304624)

this looks pretty awesome now.

Originally Posted by AndyMS3 (Post 304719)

Good progress so far, very curious to see the results of this.
If you need a hand let me know.

Originally Posted by djuosnteisn (Post 304757)

I would cut off my own hand and lend it to you if you needed it. I really like your manifold, thanks!

Originally Posted by sleeperstang1994 (Post 304921)

this mock up looks great! would love to see a working piece. keep up the good work. way to look out for the community we need more people like you...im just to busy haha

Originally Posted by GQ_WhiteMS3 (Post 305001)

Ditto on the help / resources ... if you need something post it up, if I can help I'm 100% in to help ... this is great work

Originally Posted by 7mileshome (Post 305538)

Subbing here.... this looks good.

Originally Posted by phantom3 (Post 305856)

Don't come into my thread a fucking write "subing" to subscribe. That's my biggest pet peve ever! There's a subscription button at the top of the Page!.

That being said, Thanks! and stay tuned.