n/a filter in nose panel

VII · 12-10-2009, 08:57 PM

Has anyone modified the Jboot and filter garbage to fit within the nose pane of an n/a? I need to examine it a little more but it seems like it might work if you go over the headlight bar or you may have to just remove it altogether. I vented my nose panel and get cool air to the filter now but it would work more efficiently if it was removed from the engine bay. I don't mind grinding things up but thought I would get suggestions before I jump in.

I also purchased a hood scoop just in case the nose panel idea does not work out and am thinking about installing a functional scoop soon with ducting to the original air box set up when I finally get hold of one, just wondering who else has done this and how you went about making it more of a ram air set up (seal from hood to air box, hole cut in hood, etc). I'm not using the small scoop on the side but a large, 1" tall scoop in the middle of the hood. Directing the flow of air to the side is pretty easy.

Yes, I get it, don't modify the 944 because it is a sin, blah blah blah. Interested only in answers to my questions.

Thanks in advance to those with helpful input.

porsche4life · porsche4life's Garage

The airbox on one of the variants of the S2 was in the nose panel... buying that setup would be your best bet...

VII · 12-11-2009, 01:54 AM

the s2 set up will just bolt right up to the stock intake manifold? I was actually thinking of the s2 when I thought I could do it without too much trouble but didn't realize it would swap into my n/a.

Mark944na86 · 12-11-2009, 02:30 AM

It won't. You would need the whole S2 front bumper. It's a pretty tightly integrated design.

What exactly are you trying to achieve?

VII · 12-11-2009, 11:17 AM

Ah, gotcha, so back to the fabrication idea. I was hoping for at least the filter to be directly within the path of incoming fresh air and if possible to rig up more of a ram-air set up with a plenum from the nose panel vent or the scoop. I'm sure someone has done this before, there has to be someone with firsthand knowledge out there.

Grandad#3 · 12-11-2009, 11:43 AM

Hi VII, I see your from New Mexico. I guess there is not too much rain water to worry about getting into the Ram Air Induction System you want to build. Just thinking about how I would divert the water to dump it before it gets to the AFM and ruin the engine.

Cheers,
Larry

pontifex4 · 12-11-2009, 11:52 AM

You might also consider the S (not S2) airbox design -- it draws air directly out of the area under the header panel, and is pretty smooth. I only realized this when I pulled the front off mine. I've been hunting for a picture, but can't seem to find any.

VII · 12-11-2009, 02:26 PM

Quote:

Originally Posted by Grandad#3

Hi VII, I see your from New Mexico. I guess there is not too much rain water to worry about getting into the Ram Air Induction System you want to build. Just thinking about how I would divert the water to dump it before it gets to the AFM and ruin the engine.

Cheers,
Larry

Yeah, we don't get much rain but it is worth looking into. I could probably get away with drilling some holes in the bottom of the plenum and if I put the filter higher up in the nose panel then I should get minimal water directly on the filter (because the vent is near the bottom of the panel). I'll have to think about that more though, thanks for bringing that up.

pontifex4, if you have a pic of that set up I sure would love to look at it. I'll do a google search and see what I come up with.

Because I know I could build the set up, my only concern is fabricating the new j boot (no longer a J really) for the set up. Extending the wires, building a plenum if needed, mounting, etc will all go well but I'm interested in how I should go about the new boot. I figure Silicone is the best way to go but routing it from the intake to the AFM might be tricky with the headlight bar movement. Perhaps I would be better off with the universal flexible intake tubing stuff they have at auto parts stores? That way I could easily navigate the headlight bar. I need as few turns as possible though. hmmmm...

Grandad#3 · 05:11 PM

VII, Forget the flex tube. The inside has to be as smooth as possible other wise you will get a tumbling motion to the air flow. There is a correct term, but I can't think of it right now. I believe the term is called "Cavitation".

Cheers,
Larry

VII · 12-11-2009, 05:04 PM

Quote:

Originally Posted by Grandad#3

VII, Forget the flex tube. The inside has to be as smooth as possible other wise you will get a tumbling motion to the air flow. There is a correct term, but I can't think of it right now.

Cheers,
Larry

Ah, yes, I read about that in another post. Any ideas anybody?

phil823 · 12-11-2009, 06:23 PM

it CAN be done!

on the later model 944's the pannel is bolted not welded one (like the early) you can custom order a J boot made of hardened silicone at almost any angle! actually look into my thread about the Stock JBoot Flaws....

you would have to make sure the piping wouldnt hit the headlight bar. and then route it into the pannel. also i would cut a whole in the pannel and grill it in, or foam it full.

im at work, but when i get home i will try and find some pictures, i know there are a few around here that have done it.

im thinking about doing it this summer, just for the hell of it. but i will have to undrill the spot welds on mine.

VII · 12-11-2009, 07:09 PM

Excellent. Do you know what the cost would be or where I could order the silicone from? The project depends on the cost so I would have to find an inexpensive approach. I just realized that I have a bunch of very large radiator hoses I have been collecting over the years that might work out with a coupler or two I also have laying around. It's too cold and I'm too busy to get into things now but I might give this a shot later this month or early next.

Any pics and info you have would be great. Thanks a million.

phil823 · 12-11-2009, 10:03 PM

this is the silicone i think, i have not done this job yet...if it dies down at work i will find some pictures for you. if not i will tomarrow!

45 Degree Silicone Elbow Bend, Silicone Hoses* Intercooler Turbo Hose

ernie9944 · ernie9944's Garage

Quote:

Originally Posted by VII

the s2 set up will just bolt right up to the stock intake manifold? I was actually thinking of the s2 when I thought I could do it without too much trouble but didn't realize it would swap into my n/a.

This is what Mark944na86 was talking about mod done on a s2.

phil823 · 12-13-2009, 11:58 PM

thanks for getting him the pictures, i have been slammed at work!

im not sure i dig the box...i know the point it serves though! to keep the water out!

i think with a piece of warped plastic you could make a shroud cover that would work just as well or close to it! also 924 inserts would work (the little fins) that would help point the airflow and rainflow down.
altough not as ram affecting but much better would to be toe bend some metal in a V shape, a VERY shallow V SHape and mount it in the opening. it would vent the wind into that area, but would not allow water to touch the filter!