I just wanted to clear up some confusion about this hood scoop that Obehave has tested this week.....

JS (Joel) does all my shaping and some design work for previous and some
New products that will be released shortly.

The design that Obehave used is the proprietary DFIC scoop and as such can be purchased seperately for $199.00. But the availability will be spotty for the next couple of months as we are filling the DFIC back order.

Peter
Team M7
562-608-8123

 

it's probably not worth it or a moot point now, but the capture area is defined as the area created by projecting the lines that divide the flow from entering from that going by on to a plane normal to the direction of the air. or in non engineering gibberish, sort of the centerline of the lip all the way around the intake. the bottom line is probably hard to determine; the top line would be much easier.

i only asked to see if the bigger is always better scoop myth was at work; if you're sure it's smaller, that's good enough for my curiosity.

i don't think it would be all that hard to connect a scoop- like tunnel from right behind and below the stock ic or right behind the m7 ic to louvers about halfway back on the hood. there's a german company that used to make a louvered hood until they went to a big hole on top like the mitsubishi evos. their louvers were too far to the sides for ic only cooling, but you get the idea.

it's so easy to tell somebody else to cut up THEIR hood

 

Peter,

Sorry but I am a bit confused. Are you saying the scoop that is shown in the first post here is the DFIC scoop? If so, are you still going to sell the other scoop that was shown in other previous threads for the DFIC that more closely resembles the ram-air scoop?

I am all for the DFIC preformance but I also want some show with my go and don't really care for the looks of the scoop in the first post in this thread.

Thanks,
John

 

Yea really, clear that up for me too
It's definitely not the sccop that was on msfittoys' car at the Dragon.

It doesn't look that bad

 

I think everyone is a bit confused...this "black" scoop that Joel did on his own and brought to the dragon is NOT for the DFIC...it's apature is designed for his standard OEM IC.

The DFIC intake, although similar in that it is also asymetrical, has a greater vertical opening and not compatible with any other IC including Alta, OEM, etc...it will only work with the DFIC...

 

No, it doesn't look that bad... Just want something a bit more symmetrical if possible.

Sorry if I offended. That was not my intent.

 

We've already provided M7 with the symetrical version that will fit the Alta and OEM IC...It's in production and called the Ram Intake

https://www.northamericanmotoring.co...intake+project





http://www.m7tuning.com/main.m7/store/10035

 

My, a lot has happened in the last day or so....

I too have been thinking about segmented flow paths for the air, and it is a good idea. The problem (as previously stated) is in optimizing the flow paths. Do it wrong and things will get worse, not better. So you either need a Cray, or a lot of time and money, or both, or just get lucky with the first attempt!


Matt

 

MSFITOY,

I have seen the ram-air. Just was inquiring about this new scoop in regards to the DFIC. I was about to go for the ram-air until the DFIC was announced. Now I am saving my pennies (and working on wife's approval ) to get that with the scoop instead. I was just asking if this new scoop is for the DFIC or not.

Guess the answer is not.

Thanks,
John

 

I think I need to give a brief history, of this experiment, to try and clear up confusion. First, this scoop, in the first post of obehave, is a one off design created as part of an experiment to test out my ideas of air flow control over a stock IC unit. I met obehave at the Dragon where we had a chance to talk and share ideas. He liked this design and offered to help with some impartial testing of ideas we shared about air flow within the air diverter/hood. We desided to share the results with the NAM community. This is a good place to brain storm and the sole purpose of this thread.
I suppose it was inevitable that there would be some comparison to the DFIC. The only connection between these two scoops is; me, the sculptor/designer of both scoops.
I hope this helps clear up any confusion.
JS

 

The slight raise in upper lip height (instead of a pronounced protrusion) is another attribute of this JS design that appeals to me on a functional level. One of my observational experiments involved spraying water on the scoop trim (and the hood), hauling behind down the road, and then looking at the droplet trails. There appeared to be an air flow dead space about four inches on the floor of the intercooler scoop trim piece which would point to a diversion of air flow probably caused by the blunt shape of the lower leading edge of the vehicle. I gathered from those results that air grabbing area for the intercooler scoop could be enhanced by raising the top lip a small amount but not so much as to create an air rolling action. If I understand flyboy2160’s explanation of capture area raising the top edge would also raise the centerline on the horizontal plane to take more advantage of the normal direction of incoming air, although still not addressing the mid-point bend necessary for flow through fin coverage in normal IC orientation.

BTW, I have an idea for a tiered honeycomb intercooler cover (something like reversed later model cowl vents) that would help bend air flow across the conventional intercooler surface more uniformly (in my mind). JS is obviously good at putting his ideas into functional form.

 

to your experiments, k-h. i'm surprised that 'hauling around' doesn't blow ALL the water off you must be going too slow

now that somebody has broken the size myth, that dead space could also be caused by excess air spilling back OUT!! remember the guy who posted about seeing his ic spray come back OUT? did you put droplets on the hood below the scoop opening? if you do and color them, you might be able to see where the air below the scoop is going.

 

Nah, no offense to me.
All in good fun IMO.

 

Here’s a minor illustration of how much air is grabbed by the upper lip of the stock hood scoop trim. There is a tab on the trim which fits over the hood skin and under the stock diverter; just a small gap between the two but air is injected with enough force to push rain water under the hood liner.

 

does anybody know the open area through the cooling fins of the ic?

 

I had a chortle that almost made me swallow my uvula. Thanks for a dozen chuckles flyboy2160; be careful, someone might take you seriously.

 

Uvulas are serious things! Don't underestimate their power to choke. Seriously.

 

I can measure up my GRS tonight. Subtracting tube area will be easy but fin area would be a best guess based on the fin stock thickness and density.

PM me if you want the details.

PS:
I figured a way to measure the openings for a stock versus JS scoop. Let me know if you want that as well.

 

This is has potential for a popcorn session. Let me grab a chair. Let the spark fly......

Bomboasy

 

 

I have a figure to maintain!

Matt

 

I didn't do nuttin'



What'r we watchin' ?