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Old 08-13-2003, 03:03 PM   #1
STI 2 NV
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Default Gutterguard In Hoodscoop

Well, I decided to add gutterguard to my hoodscoop to keep as much stuff out as I can. I was amazed how easy the hoodscoop came off and after doing this I realize how well the scoop is on. This is just my first attempt and I'll probably redo it, but here's a couple photos.



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Old 08-13-2003, 04:38 PM   #2
meridock
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Kind of like that. I wonder how much air flow it restricts.
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Old 08-13-2003, 04:43 PM   #3
STI 2 NV
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Quote:
Originally posted by meridock
Kind of like that. I wonder how much air flow it restricts.
i'm guessing not much, if any, at all.
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Old 08-13-2003, 05:24 PM   #4
Oldnslow
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You might be surprised how much airflow is restricted by a mesh grill. I got some good ss mesh from Pegasus that I used for the radiator openings in the front of the WRX but decided not to do it for the hood scoop. I think it was something like 30-40% restriction of air flow. Haven't noticed any overheating due to the mesh, though I live in Seattle where weather not too hot usually. I just opted not to do it for the hood scoop. With the bigger STI scoop(and greater risk of stuff getting inside) I might try it. You might try to call up web site for Pegasus Racing and see what it says about airflow restrictions and the various mesh sizes available--their catalog has all the numbers.
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Old 08-13-2003, 05:29 PM   #5
ssitu
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I want to do this mod too. But I figure I'd better find out how much air restrition it does before doing it. If it's more than 20% I might not do it 'cause it gets really hot around the hood scoop area already.
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Old 08-13-2003, 05:44 PM   #6
Oldnslow
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If I recall Pegasus had several sizes of mesh but oddly enough the amount of restriction really didn't change much depending on their sizes offered. Some of the smaller mesh was very restrictive----if I recall I opted for a medium size. Also, consider that Subaru has not put mesh on the hoodscoop and it wouldn't be much of a cost item---I bet they wanted maximum air to get to that intercooler.
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Old 08-13-2003, 05:53 PM   #7
Extraze
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Default

i have had a screen inside my hoodscoop since day one, and had it for a year on my WRX and never had overheating problems or performance decreases.

it may restrict aiflow (never by 20%) but its better than having half of your IC fins bent... id rather have a smaller air flow than a half-working IC .
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Old 08-13-2003, 06:28 PM   #8
SubaruPartsGirl
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This is actually a really good idea in my opinion...yesterday I was reading a post on the Mid-A forum about how a bird flew into this guys WRX hood scoop while he was going down the highway and it part of it got lodged in the scoop and the rest of it was splattered under the hood...very nasty if you ask me. This is what I would call preventive maintenance. I am not positive about the air restriction but as long as the car is not overheating it sounds like a good idea to me. Perhaps mesh with larger holes so you have more air flow but still no birds lol.
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Old 08-13-2003, 06:37 PM   #9
STI 2 NV
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i really don't think it's going to be that restrictive. it's just flimsy plastic. there are plenty of holes for air to get through. if i were to race i'd take it off, but for everyday driving on highways and such i think it's very helpful to keep those larger objects off the intercooler and to possibly keep the amount of bug collection down. i live near tons of farms, yuck, and the bugs are crazy here.
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Old 08-13-2003, 06:40 PM   #10
MTMS4
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In all my years of driving I've never had a bird (or any other small animal etc.) impact my windscreen, nor had impacts from any other debris bigger than a tiny rock.......so what's the likelihood you're suddenly going to start sucking or collecting things down the hood scoop......very low I'd guess......I personally like the look of the mesh but I think it's really superfluous (bit like a BOV...only joking !!).
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Old 08-13-2003, 06:46 PM   #11
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Old 08-13-2003, 07:56 PM   #12
wewu
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Quote:
Originally posted by STI 2 NV
i really don't think it's going to be that restrictive.
u used the plastic stuff that comes in rolls?? Y didn't you use the aluminum gutter mesh?? I put mine on last weekend and the gutter mesh's curvature matches up almost perfectly with the curvature of the hood scoop opening, so it looks pretty professional. Also I was scared the plastic stuff wouldn't be strong enough or would start to melt.

Also with regard to how restictive the screen would be, I don't think it will make much of a difference. I figure with a tmic you're gonna get heatsoak anyways with or without the screen there if you are just sitting there in traffic and when you are driving 20+mph there's plenty of cool air coming into the hoodscoop neways. Also think about the diminished cooling capacity of the intercooler with bent up fins or when you come back to your car only to find some jack*** decided to use your engine bay as a garbage can.
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Old 08-13-2003, 08:16 PM   #13
STI 2 NV
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Default

i did use plastic and it was curved as well so it mounted quite easily. i highly doubt that the plastic is going to melt. they didn't have metal and this came black already so i decided to go with this. also, if i messed up i knew i had a huge roll of extra.
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Old 08-13-2003, 09:55 PM   #14
skuttledude
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Quote:
Originally posted by MTMS4
In all my years of driving I've never had a bird (or any other small animal etc.) impact my windscreen, nor had impacts from any other debris bigger than a tiny rock.......so what's the likelihood you're suddenly going to start sucking or collecting things down the hood scoop......very low I'd guess......I personally like the look of the mesh but I think it's really superfluous (bit like a BOV...only joking !!).
Please read: http://forums.nasioc.com/forums/show...hreadid=404447

Davis
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Old 08-14-2003, 10:18 AM   #15
MTMS4
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Davis,

You must be a very unlucky man, I think the chances of that happening once, let alone twice, are a million-to-one......maybe you should start buying (more) lottery tickets.

It's certainly a good way to stop vindictive a-holes from putting garbage down there, but other than that.......
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Old 08-14-2003, 10:33 AM   #16
skuttledude
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Default

Quote:
Originally posted by MTMS4
Davis,

You must be a very unlucky man, I think the chances of that happening once, let alone twice, are a million-to-one......maybe you should start buying (more) lottery tickets.

It's certainly a good way to stop vindictive a-holes from putting garbage down there, but other than that.......
I agree, I'm must be lucky/unlucky or something. The fact that it happened once, was amazing to me (I had a smaller hoodscoop on my RS, never any birds) but the fact that it happened again within a week, amazing. I'm truly getting the shield thingy to block out feathered beasts

DAvis
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