I previously had an 03 350Z with the V2 bumper and "ram air" which was found to work very well with intakes like Volant that have an ice box mounted to the hole in the radiator support. However, I have not found a ram air duct for the passenger side to work with the V2 bumper when having dual intakes on the HR. I currently have an 08 and will be running the V2 Bumper again.

Does anyone have a ram air duct that works for the passenger side or is my best option custom fabricating a duct?

If I am not able to locate one, I was looking at making an even more aggressive intake duct that will use more of the grill area for the intake.

Just so we're on the same page, this is the V2 Duct for the DE motors:



Possible idea for a custom intake duct utilizing more of the bumper's mouth with either the stock impact bar or "drift bash bar" for more room:

 

By the way, the I would be fabricating an intake duct for both sides even though the illustration only shows the one side.

 

they make the for the HR's

http://www.southerncarparts.com/niss...op-p-2920.html

 

That's cutting through the top side of the bumper which has been proven to have very little effect on air flow into the intake. I'm looking for the duct that is inside of the mouth of the bumper which actually collects massive amounts of air.

The duct I'm looking to make/obtain does not cause any modification to the bumper. It completely sits behind the bumper.

 

gotcha... get you like a big vacuum hose like the car washes and make something. would be kinda easy since flexible

 

I'm sure that would work to a certain degree, and a lot of people use that for cooling brake ducts, but I'm looking to do this in carbon/kevlar/fiberglass type of setup molded to fit flush with the bumper and direct air into an "ice box" setup on both intakes. Something that will last much longer as well as not look so cheap as a dryer hose.

I have done custom molds before. Just didn't plan on that being the only option.

 

I can appreciate you wanting to do things the right way.Not scrimping on
stuff--quality only.But I'm wondering what do you mean by worked "very well"?
Did you measure the added power you gained from this mod?
I've just never seen any meaningful increases from this kind of plumbing.
Seems like a bunch of work&expense for the gains other than cosmetic.
Maybe you have found the answer.
What is it?

 

Dyno numbers increased slightly on my 03 DE (3whp) but at highway speeds where the "ram air" is more functional, I noticed a pretty big difference when I ran the same car (modified IS350) prior a few times (almost even) as well as a few times after putting on the V2 bumper w/ the air duct (almost 4-5 cars ahead). This was on the same stretch of road and the only thing that was changed was the bumper & air duct running the same Volant Intake.

I can image it would be quite a bit more functional on the HR with dual air ducts going into dual ice boxes. That way the air is being channeled with velocity as well as not losing air in gaps or just going into the engine bay.

I can't image intakes like the Stillen Gen 3 would be as functional at having air pushed into them as the location of the filters would have "cooler air" but the turbulence behind the impact bar isn't really directed into the intake causing inconsistent air pressures and results at highway speeds.

EDIT: Expense wise would be as follows:
$45 - molding foam
$110 - carbon/kevlar fabric (plus I still have some laying around)
$25 - fiberglass
$60 - epoxy resin
and then it's just my time

 

The thing I'm more curious about is if I block the left and right sides of the mouth of the V2 bumper, is that taking away from possible brake cooling or even access to the radiator. By the dimensions, the area between the 2 vertical bars is about the same size as the OEM bumper.

 

My advice, use foamboard to make a prototype.

 

I usually use a block of expanding foam. It's easy to shave, and holds shape when wrapped in fiberglass & resin for mold properties.

I've never actually used foamboard but have looked at it for other projects. Just never when that route.

 

Well that would work well too I imagine, just throwing it out there.

IF you need a 3D model of it for production let me know

 

I'm not sure if this would be a production item for others or not. Are you talking about about 3D digital model or injection molding?

 

3D digital model. Can be converted to CAD or use for 3D printers
MAYA is the app

 

Ah, gotcha. Never thought about 3D printing the basic item and then wrap it in Carbon/Kevlar just for the added touch and strength.

 

I have a DE w/ Nismo V2 front end. I never installed the scoop, and regret it now since I seem to have lost it. I'm interested in the driver side scoop if you make one.

RAM air is effective if properly plumbed. I think it needs to be all enclosed. I know some people spend hundreds of hours designing their setup, and don't share

 

They sell the regular air duct via ebay:
http://www.ebay.com/itm/141113781780...84.m1436.l2649

If I buy the Drift Bash Bar, I would design it to work with that which should allow for more room to get a better air feed/channel. So the setup may not work with everyone else's setup. This is something I was looking to possibly mold to the bumper though after it's designed. It's still up in the air how everything is going to turn out, but I just want to make sure it's as functional as possible without obstructing other items (brakes, radiator, oil cooler)

 

I like your sketch, it has more surface area feeding into the intake area. Having it on both sides would make for a good starting point to feed cool air to the ITB's in the future also.

 

What about using one duct in the bumper then run the plumbing inside the bumper to both the passenger and driver side intake? Would one hole deliver enough air for both sides?

 

I think a large single mouth in the center would be the only way to do it that way. The style of the V2 bumper, I think, would work better with the dual air ducts though.