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Holley scoop questions by pHoOl
Started on: 08-30-2000 06:45 PM
Replies: 10
Last post by: Haze_Performance on 09-01-2000 01:52 AM
pHoOl
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Report this Post08-30-2000 06:45 PM Click Here to See the Profile for pHoOlClick Here to visit pHoOl's HomePageSend a Private Message to pHoOlDirect Link to This Post
Couple of questions. First, how much of a difference do they make. I'm talking about the little scoops that go over where the intake is on the driver's side of the car. Also, where do you get them from? I tried the fiero store, but didn't see it. thanks all!!

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JohnnyK
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Report this Post08-30-2000 07:45 PM Click Here to See the Profile for JohnnyKSend a Private Message to JohnnyKDirect Link to This Post
I heard, and I expect that they would make no noticeable difference.
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Monkeyman
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Report this Post08-30-2000 11:48 PM Click Here to See the Profile for MonkeymanSend a Private Message to MonkeymanDirect Link to This Post
Unless you're really partial to the "Holley" name on your car, Tom sells a very similar looking scoop for much less than most of the Holley scoops. Seems like I've seen the originals going for over 100 bucks on eBay. There are others with similar "ram air" scoops, too, many right here on the forum. I think SuperX sells one (Greg, are you still out there?) and there's a fairly new member with a company called BBJ Plastics (or something like that--too lazy to search for the correct name).
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pHoOl
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Report this Post08-31-2000 12:41 AM Click Here to See the Profile for pHoOlClick Here to visit pHoOl's HomePageSend a Private Message to pHoOlDirect Link to This Post
Does the ram air action do anything for you? is it like a slight turbo charge or something?

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Standard
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Report this Post08-31-2000 01:52 AM Click Here to See the Profile for StandardClick Here to visit Standard's HomePageSend a Private Message to StandardDirect Link to This Post
Some people claim they can feel a small difference at highway speeds, but I think that's mostly psychological... the scoop would have to be a lot better designed and you'd have to be going a lot faster to get any real gains..

oh yeah.. the idea behind ram air is to pressurize the intake.. i don't think you'd get much more than 1-2 psi on a well-designed system.. if any one knows more about this than me feel free to correct me
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Red 84 Sport Coupe - winter donut maker

[This message has been edited by Standard (edited 08-31-2000).]

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Oreif
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Report this Post08-31-2000 02:40 AM Click Here to See the Profile for OreifClick Here to visit Oreif's HomePageSend a Private Message to OreifDirect Link to This Post
Holley hasn't made the scoop since 1991. The Fiero Store and IRM use to sell them but somewhere around 1995/1996 they sold out. The only place is Ebay for $100 or more. (Unless your very lucky like Haze and find one in a junkyard for $3.00) There are many "clones" of the holley scoop made by many on the forum. Many styles to choose from. As for actual gains, With the scoop and a K&N air filter I think it helps highway gas mileage a little but that is about the extent of it. I think the gains in mileage come from a more constant air flow/pressure at highway speeds. I have heard that the original vent tends to cause negative pressure at highway speeds. How true this is I don't know but I bought mine from the Fiero Store back in 1995 and haven't had a problem with it for years.

[This message has been edited by Oreif (edited 08-31-2000).]

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HugGRRRFiero
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Report this Post08-31-2000 09:12 AM Click Here to See the Profile for HugGRRRFieroClick Here to visit HugGRRRFiero's HomePageSend a Private Message to HugGRRRFieroDirect Link to This Post
I wouldn't be suprised if the original vent creates a negative pressure like Orief said. The air passing over the stock vent probably creates a siphon type effect.

I'd say they help performance a little at speed, but the biggest gain is looks. The BBJ scoop on my car is one that I helped design and develop with my Father Bruce and Uncle John. Our website is at BBJ Resin Specialties

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Pontiaddict
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Report this Post08-31-2000 04:15 PM Click Here to See the Profile for PontiaddictSend a Private Message to PontiaddictDirect Link to This Post
When driving down the road, stick your hand out of the window and hold it next to the door at about the level you think the scoop would be. The slightly higher air pressure that you feel is acually a little higher than what would go into the scoop.

Think of the scoop more as cold air induction than ram air. It wont hurt and might help it a little.

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WKDFIRO
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Report this Post08-31-2000 05:39 PM Click Here to See the Profile for WKDFIROSend a Private Message to WKDFIRODirect Link to This Post
I would definitely agree that it is more of a cold air induction than Ram Air. To say that it would have a slight turbo effect is negligible. I doubt seriously that it would even produce the equality of 1 lb of boost.
The scoop in and of itself might help but in such a minor way as to not see any improvement. Taking out (as opposed to simply punching a hole through) the air intake muffler (it really is a sad design for a water trap in the configuration its in.) and replacing it with a pipe can help. SLIGHTLY. You have more air that is freely going through to the filter and intake.
Granted, at highway speed the "wake" of air that the nose is pushing might negate the Ram effect somewhat it is the elusive time in between the dead stop and highway speed that I think that the scoop helps out, SLIGHTLY.
With my 4 cyl I did notice the improvement. I had driven the 87 4 cyl for some 120,000 miles and that was the last modification I did to it before it was destroyed in an accident a year later. I felt the difference putting on the scoop and taking out the muffler. Passing speed (40-60) did improve SLIGHTLY. At the drag I took off 2/10s of a second from an engine that already had 153,000 miles on it. (Wish I had the slip still, it faded.)
I put it on the V6 but the engine was already being built up when I added it on so I will never know how much of the power is all of the engine work and how much is the scoop.
Yes, part of the fun of souping up your car is psychological. Other times you just have to rely on what you honestly feel. Me, I like what I got and love to put my hand in front of the intake and rev slightly just too feel the suction.
BTW I got my scoops at FOCOA (Holleyless), I had to get a second one because I got just a little TOO close to an orange cone on the freeway.

[This message has been edited by WKDFIRO (edited 08-31-2000).]

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Phantom Rage
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Report this Post08-31-2000 11:39 PM Click Here to See the Profile for Phantom RageSend a Private Message to Phantom RageDirect Link to This Post
A few years back I was lucky enough to get a Holly scoop. I got it for around $25-$29 dollars. With people selling them for $100 I almost want to take it off so it doesn’t get stolen.

I did not really notice a difference with the scoop, but it's hard to say. I do know, however that I find all sort's of debris around my air filter such as, leaves, bugs, small stones, (squirrels, joke) etc. Maybe there is an ample ram-air effect, in order to get that crud up there (88 Iron Duck). I guess I will have to pull it off to see if I notice a difference. It is usually easier to notice a loss than a gain.

[This message has been edited by Phantom Rage (edited 08-31-2000).]

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Haze_Performance
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Report this Post09-01-2000 01:52 AM Click Here to See the Profile for Haze_PerformanceSend a Private Message to Haze_PerformanceDirect Link to This Post
To benefit from Ram Air you would have to maintain speeds over 100mph. I would say it's more for a look than fuctional.


My 2 1/2 cents.

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