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Old 09-04-2005, 12:32 AM   #1
012.5RS
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On my RS its got the hood scoop and the two "vents" They are all blocked off by black plastic. I'm sure i wont get any hp out of opening them up, but will they work atleast as heat extractors and lower my under hood temp?
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Old 09-04-2005, 01:17 AM   #2
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Yeah it will lower your engine temps a little bit. But there's no power to be found there. I did it on the scoop tho and had my intake point up into it. It was good for high RPMS but lost a bit of lowend torque.

cheers

garrett
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Old 09-04-2005, 06:37 AM   #3
012.5RS
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did you have any problem of water getting into anything electrical?
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Old 09-04-2005, 12:07 PM   #4
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Quote:
Originally Posted by 012.5RS
did you have any problem of water getting into anything electrical?
Actually, I was thinking the same thing. Coxmaster, aren't you running a pretty big risk of having it there? I could be wrong, but it seems like a pretty easy spot to get water into the intake.
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Old 09-04-2005, 04:12 PM   #5
Kevin Thomas
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Quote:
Originally Posted by 012.5RS
On my RS its got the hood scoop and the two "vents" They are all blocked off by black plastic. I'm sure i wont get any hp out of opening them up, but will they work atleast as heat extractors and lower my under hood temp?
Now where is that pic of the RS with the bottom hood vent cover removed during that ice storm? You could clearly see the ice melted around the vents from all the heat being released. It certainly helps if you have an open element filter on hot summer days (or hot climates).
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Old 09-04-2005, 04:14 PM   #6
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Quote:
Originally Posted by Lethargic1
Actually, I was thinking the same thing. Coxmaster, aren't you running a pretty big risk of having it there? I could be wrong, but it seems like a pretty easy spot to get water into the intake.
Yes, it is an easy spot to get water into the intake. Your car may bog down a bit if a little to much water gets injested at that location. There was even a recall a while back on some Subaru models for water getting into the passenger side vent causing some Maf sensor related problems. You could ride through rains and car washes without issues though and for the most part you will be ok. (Unless you live in New Orleans but you probably know this by now).
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Old 09-04-2005, 05:47 PM   #7
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I live in Seattle (a pretty rainy city) am I running a risk of damaging my car if I open up the hood scoop, even if I don't run the intake there?
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Old 09-04-2005, 06:02 PM   #8
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Quote:
Originally Posted by Slick Nick
I live in Seattle (a pretty rainy city) am I running a risk of damaging my car if I open up the hood scoop, even if I don't run the intake there?
I'd like to know this as well actually
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Old 09-04-2005, 06:18 PM   #9
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it would have to be a signifigant amount of water, more than just heavy rain
talking enough to displace all the compressable air in the cylinder
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Old 09-04-2005, 06:21 PM   #10
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ha ha Kevin that is exactly what I was thinking of too. I believe it was Captain Morgan or Captain "someone" that did that. I'll look thru northursalia.com Damn you're old skool.

There is risk I guess. I live in Los Angeles though. Not really a big deal since it's like high 70's year round and really LA is a desert to begin with. I have since taken off the intake since it was a total rig job the previous owner thought up. It really kills the lowend torque. The intake should be longer and for a reason. Too short an intake throws the engine into a tizzy sometimes. I only have the scoop pulled out. It does help but isn't going to give you any ram-air effect. Some physics guy calculated it and said at 70 MPH you would probably get about 12-13 miles of breeze into the scoop. Not a big diff. As far as electrical failure. I dunno I have a CEL but i don't think it's related to the scoop. I just misfire a lot but it's prolly the lightweight flywheel.

cheers

garrett


Quote:
Originally Posted by Kevin Thomas
Now where is that pic of the RS with the bottom hood vent cover removed during that ice storm? You could clearly see the ice melted around the vents from all the heat being released. It certainly helps if you have an open element filter on hot summer days (or hot climates).
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Old 09-04-2005, 06:23 PM   #11
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I think it takes about a tablespoon of water in the cylinder to cause a problem. I lived in San Francisco with it for a while and never had any issues.

cheers

garrett


Quote:
Originally Posted by mamiyarz67
it would have to be a signifigant amount of water, more than just heavy rain
talking enough to displace all the compressable air in the cylinder
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Old 09-04-2005, 06:38 PM   #12
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http://www.northursalia.com/m...hoodvents.html

^^^^ there it is.

cheers

garrett
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Old 09-04-2005, 09:15 PM   #13
012.5RS
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looks like i started some thread... The thing i was worried bout is the alt and other electrical components shorting out. I'm not woried bout water in the intake since im gonna run a CAI and not a RA style.
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Old 09-04-2005, 09:29 PM   #14
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Quote:
Originally Posted by 012.5RS
looks like i started some thread... The thing i was worried bout is the alt and other electrical components shorting out. I'm not woried bout water in the intake since im gonna run a CAI and not a RA style.
Yeah, I think we've moved on to RA intakes. Feel free to bring the thread back to your original question at any time.
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Old 09-04-2005, 09:36 PM   #15
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Quote:
Originally Posted by coxmaster
http://www.northursalia.com/m...hoodvents.html

^^^^ there it is.

cheers

garrett
hey thats awesome~!
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Old 09-04-2005, 09:40 PM   #16
012.5RS
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its np, i was just wondering if id be at risk of getting water on my alt or other major electric components. I live in PA we dont get rain that much but every once in a while we get a pretty good amount.
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Old 09-06-2005, 03:09 PM   #17
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It seems like if you were to remove the side vent covers then you would run a big risk for having water just fall straight in during a during a rainstorm if the car is parked outside. Then again... Wouldn't the Evo 8 have the exact same problem?
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Old 09-06-2005, 07:55 PM   #18
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my car has no problems with all three vents removed. I am also a firm beleiver that the extra air circulation does not let dust settle and actually keeps the engine cleaner. I also think yellow stickers are good for +5 hp
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Old 09-06-2005, 11:59 PM   #19
012.5RS
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i guess ill try it then.
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Old 09-07-2005, 12:03 PM   #20
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there is also a thread i saw with a mod for the front vents using 1/4 plumbing washers. so you still retain the bottom piece but it allows more air(heat) to escape from under the hood
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Old 09-07-2005, 02:35 PM   #21
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i took mine off once and it was kinda loud. Now I just have holes punched in the plate thats above my ram intake filter...
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Old 09-07-2005, 02:41 PM   #22
Slick Nick
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Was it loud when you were outside the car? or was it really loud while you were sitting inside driving? And I don't know if you can compare but was it louder then a WRX/ STi in regards to the hood scoop?
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Old 09-07-2005, 07:29 PM   #23
Kevin Thomas
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Bottom line is, if you are worried about removing the vent cover to allow cooler air to enter your intake (or hotter air to escape), do not do the mod. Many people have done it, including myself without problems for many thousands of miles. Some others have done it and ran into problems. It's up to you and how hairy your chest is (or hard if no hair, or big if neither and female, ahh...this is getting O.T.).
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Old 09-07-2005, 11:35 PM   #24
Slick Nick
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Well I decided to just go ahead and do it today. First I washed my car with the covers still on (I thought this was the safer thing to do...) and when I opened my hood to remove them I was surprised at the amount of water that had gotten into the engine bay through the vents even with them "closed" so really im not sure its changed much interms of water flow, which was my big concern. No noticable differences in noise, temps, etc. At least I can finally say that its functional.
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