OK, so I have read through about a dozen or so threads with diff ideas for hood scoops. I still can't decide on a "cowl induction" style or a "angel vent" style, but the question I have is that with each one, a portion of the top layer of the hood needs cutting off, leaving the bottom "substructure" intact. I have read the threads, but I can not figure out how the he** you all did it. So I am asking. How do you cut the top layer off and leave the bottom "substructure" in one piece.

Thanks in advance.

rob

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88 Coupe, CJB T-TOP, LS376 and a GT clip
http://www.youtube.com/watch?v=QAH9yjw6XR0

[This message has been edited by qwikgta (edited 04-19-2011).]

Either a Dremel tool to just cut below the skin and then remove it or a rotozip. The skin simply peels off of the substructure.

[This message has been edited by IMSA GT (edited 04-18-2011).]

It's "Angel Vent".
I use a die grinder with a thin cutoff blade (3"). Some folks call them "ziz wheels".
I've started working on the "new & improved" Angel Vent that you don't have to cut the front sheetmetal for. Will probably be a couple weeks before I'm ready to pull the mold.
~ Paul
aka "Tha Driver"

I used a 4" cutt off disk on my angle grinder to cut the sides and front slot for my sccop. I "scored" the back edge so I could "fold" the outer skin down into the hood to create the new bottom of the scoop. I had to remove some of the reinforcement webbing on the underside to be able to fold the outer skin down. Then I set the piece I used for the "vent" in place then used some pieces of the reinforcement part I cut out to fill the sides, used the 2 part panel stuff to mold it all together. Took about 4 hours total. I have a little "finish" work to do but I think it turned out pretty good.

Layed it out:


Made my cuts:




And worked it out:

quote Originally posted by qwikgta: How do you cut the top layer off and leave the bottom "substructure" in one piece.

That's me using an angle grinder/cutting wheel for the first time. Notice the limited depth of the cut.



A whole bunch of pictures (and a couple of videos) of my hood vent installation can be found Here.

[This message has been edited by Patrick (edited 04-19-2011).]

Pat, that`s a great idea.
That is a screen for the defroster vent isn`t it.
Mike

quote Originally posted by katatak:

This is a brilliant idea!

Thanks guys. I think I get it. I just didn't know how difficult it is/was to seperate the two glued parts. I tried to do this to the front of my hood, when I installed the Turbo Sunbird vents and I could not seperate the two halves. It was glued very well and I broke two router bits.

I think I get it now.

Rob

[This message has been edited by qwikgta (edited 04-19-2011).]

quote Originally posted by TXGOOD: Pat, that`s a great idea. That is a screen for the defroster vent isn`t it. Mike

Thanks - yes it is a Defrost vent from the dash - not completely my idea - originally was just going to be a "flush" mount but we had to make it more difficult.

quote Originally posted by qwikgta: Paul, As you know I'm down to two choices, your design or an "off the shelf" Cowl Induction scoop. I would love to see what you have going on with this one. I do not want to cut into my trunk area, and that has been the biggest issue. If I was good with doing it, I'd already have pulled the trigger and purchased one of your other scoops. Please keep me in mind when this is done. Rob

Rob,
I'll get some photos of it up soon. Right now I'm working on it, making fender vents & the louvered GT decklid pieces, doing some repair & mods on a Lotus Elise, an engine swap (3.4), bumpers for a BMW (fiberglass conversions E30 type for E21), & I have the two cars that I painted that I still have to sand & buff. So there's plenty of time to finish out the hood vent.
~ Paul
aka "Tha Driver"

Katatak, your hood looks very good. I only have one thing to mention. I dont like primering a 'square' around a repaired or modified panel. I always back sand it far enough to just spray it. When you leave a line like that, its nearly impossible to get out. While you may block it and it feels perfect, most times after the paint is cured, if its out in the sun, that line will show in the paint. I painted used semi cabs for a truck dealer and we chemically stripped the whole aluminum cab to bare metal. After the paint cured in the right light, you could still read the lettering on the doors. Even with tape pinstripes, when theyre removed and even block sanded, they can show back up in new paint. Darker the color the more evident they are.

OK, so now that I have some folks looking at this thread, I have another question. I was looking at relocating my coolant overflow tank in case I chose to do the recessed scoop. I walked the Junkyard looking at other makes/models overflow tanks and after looking at 100's of cars never really found what I liked. Now I did find a tank at Summit/Jegs that I liked and may chose it, but for those who have done this, were did you all put the tank? did you mount it lower or did you relocate into the spare tire well? I was looking at putting one under the passenger headlight. I would have to cut some sheetmetal to do it, but its close to the radiator cap and would be using 'dead" space anyway. Lets see some pics/ideas.

Rob

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88 Coupe, CJB T-TOP, LS376 and a GT clip
http://www.youtube.com/watch?v=QAH9yjw6XR0

on youtube I have a vid on putting a 83 Z/28 hood scoop in to a fiero. I am "fierofred" on youtube. It fits, it clears every thing, and i have the 83 Z/28 engine in the back. looks like it could be stock.

quote Originally posted by rogergarrison: Katatak, your hood looks very good. I only have one thing to mention. I dont like primering a 'square' around a repaired or modified panel. I always back sand it far enough to just spray it. When you leave a line like that, its nearly impossible to get out. While you may block it and it feels perfect, most times after the paint is cured, if its out in the sun, that line will show in the paint. I painted used semi cabs for a truck dealer and we chemically stripped the whole aluminum cab to bare metal. After the paint cured in the right light, you could still read the lettering on the doors. Even with tape pinstripes, when theyre removed and even block sanded, they can show back up in new paint. Darker the color the more evident they are.

Thanks for the tips Roger. I will keep that in mind next time. Before I paint the hood, I will most likely sand that layer of primer off - it was mainly to protect the 2 part panel adhexive from UV light until I can get it completed. .

Qwik - I apologize for the hijack!

I like the idea of under the head light. I have seen a few decen looking - polished aluminum ones on Ebay too! I was worried that I would have to relocate mine but it clears the tank by about 1/4".

hey katak what did you use for that grill on the hood?

quote Originally posted by jaredmurray88: hey katak what did you use for that grill on the hood?

Its the defrost vent from the Fiero Dash.

quote Originally posted by Tha Driver: . . . I've started working on the "new & improved" Angel Vent that you don't have to cut the front sheetmetal for. Will probably be a couple weeks before I'm ready to pull the mold. ~ Paul aka "Tha Driver"

Well come on already!

quote Originally posted by BMTFIERO: Well come on already!

The current state at this junction is it's in the process of coming on, all but not quite ready.
~ Paul
aka "Tha Driver"

aaayu[ 3" wiz works great, just go real slow and gently as it cut it like it's butter.

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[IMG]




trueleo.com
RSpiderII@aol.com

quote Originally posted by Tha Driver: The current state at this junction is it's in the process of coming on, all but not quite ready. ~ Paul aka "Tha Driver"

OK??

[This message has been edited by BMTFIERO (edited 04-20-2011).]

I would also like to know how to do this!


From Here

Or even separate the two levels completely without damaging it beyond repair.

Is this what your trying to do?

quote Originally posted by IMSA GT: Either a Dremel tool to just cut below the skin and then remove it or a rotozip. The skin simply peels off of the substructure.

Rotozip ( well a genric knock off ) is what I used.

quote Originally posted by Finally_Mine_86_GT: Or even separate the two levels completely without damaging it beyond repair.

You can use a gasket scraper type chisel to separate the two structures. They're not stuck together that well. You just have to be careful in some places where it's hard to get the chisel in.
~ Paul
aka "Tha Driver"

Just uploaded images of the new prototype Angel Vent Hood Scoop Version 2.0. (the one you don't have to cut the sheetmetal for).
http://angelonearth.net/customfiberglass.html
~ Paul
aka "Tha Driver"

quote Originally posted by Tha Driver: Just uploaded images of the new prototype Angel Vent Hood Scoop Version 2.0. (the one you don't have to cut the sheetmetal for). http://angelonearth.net/customfiberglass.html ~ Paul aka "Tha Driver"

Looks promising!

Charlie

quote Originally posted by Tha Driver: Just uploaded images of the new prototype Angel Vent Hood Scoop Version 2.0. (the one you don't have to cut the sheetmetal for). http://angelonearth.net/customfiberglass.html ~ Paul aka "Tha Driver"

So does the opening dip down into the radiator area or down into the cargo area?

quote Originally posted by bulldog85043: So does the opening dip down into the radiator area or down into the cargo area?

The radiator area to vent the air so it doesn't build up pressure & lift the front of the car - & so the headlight covers don't pop up when you meet a big truck on a two-lane.
~ Paul
aka "Tha Driver"

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[This message has been edited by BMTFIERO (edited 06-13-2011).]

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[This message has been edited by BMTFIERO (edited 07-05-2011).]

Bump

[This message has been edited by BMTFIERO (edited 01-26-2012).]

I started cutting my hood with a die grinder and a 3 inch cut off blade. After the first past I switch to a Oscillating saw with a 3 inch semi circular saw blade. I found that it was easier to control then the air driven die grinder. It also makes a very fine line.

After you mark the place you want to cut make look on the underside of the hood to see if there are areas that need to be separated from the inside frame. Where possible those areas and block them apart with some shim material.

Frank

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88 GT 5 Speed Black with gray interior
3800 SCII Swap In Progress.

IT RUNS!!
IT'S QUICK!!

"Real integrity is doing the right thing, knowing that nobody's going to know whether you did it or not."

wow, blast from the past. yea, I asked this question, and then went out and did it, it was easy. Here is my other thread about it.

https://www.fiero.nl/forum/Forum1/HTML/086123.html


Rob

Just so you know... with my cowl inducted hood scoop you do not have to de-skin your hood at all.

[This message has been edited by JimmyS (edited 01-28-2012).]

quote Originally posted by qwikgta: OK, so I have read through about a dozen or so threads with diff ideas for hood scoops. I still can't decide on a "cowl induction" style or a "angel vent" style rob

This is my dilemma.... cowl or extractor style.... Jimmys cowl or the stm extractor scoop... or maybe a combo.... would love soulcrushers design, BUT I don't want to cut my spare tire wall.

quote Originally posted by Finally_Mine_86_GT: I would also like to know how to do this! From Here Or even separate the two levels completely without damaging it beyond repair. Is this what your trying to do?

Hence the combo idea.... ugh!

So which way did you go? And why?

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1984 Indy Fiero SE Pace Car Replica #770
"SE" Stormtrooper Edition Rescued, resuscitated and reversibly modified! (I'm so not done yet!)

Poly all round & Black Drag DR-34s
Frt: 225/45 on 18x8 (47 offset w/ 8-9mm spacer) 1.5 coils cut off 1984 WS6 springs
Rear: 265/35 on 18x8.5 (45 offset) Coil-overs w/ 10 inch 300lb springs & 7 inch sleeve

Everything is the previous owners fault!

[This message has been edited by redraif (edited 01-29-2012).]

quote Originally posted by redraif: So which way did you go? And why?

build thread is thee links up from this.

I feel that a cowl goes great with a car that has ground effects, kind of gives it balance. With mine being a coupe, I just don't think a cowl would work, so I went with an angel vent.

Rob

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[This message has been edited by BMTFIERO (edited 01-31-2012).]

I have no ideal why I keep coming back to this thread when I auto-log in!!!!

[This message has been edited by BMTFIERO (edited 02-04-2012).]