Build Thread 1978 Mercury Cyclone. The pig is in the pen.

84Ttop · Oct 10, 2014

I don't actually hate the scoops you made... They carry the same boxy type design that the rest of the car follows suit with and don't look bad in my opinion. Once painted body color I think they would look even better

madspeed · Oct 10, 2014

isnt there some science or math or some other technical bs behind the shape and design of the nascar style air scoops also used throughout worldwide motorsports? Figure out a way to make em less obtrusive like those are and it'll work out great

Bullitt347 · Oct 10, 2014

If the airflow out of the car, ( once it goes through the intercoolers, ) is greater than what can get in through the scoops/opening, then you could end up creating a negative pressure on the outlet side and thus help draw air in on the inlet side and thus increase airflow that might otherwise not naturally come into the scoop/opening.

jetmech807 · Oct 10, 2014

madspeed said:
isnt there some science or math or some other technical bs behind the shape and design of the nascar style air scoops also used throughout worldwide motorsports? Figure out a way to make em less obtrusive like those are and it'll work out great

They were designed by NACA, which later became NASA. Not sure that's the answer you were looking for, but there's your history lesson for today.
Has to do with "boudry layer air". That's the air right at the surface of an object that doesn't move. It's about an 1/8th to 1/4" thick. The moving air over that layer forces the air at the surface into and through the duct.

Bullitt347 · Oct 10, 2014

And NACA ducts don't work to well unless you are going really really fast, like over 130 or so.

jetmech807 · Oct 10, 2014

Bullitt347 said:
And NACA ducts don't work to well unless you are going really really fast, like over 130 or so.

Pretty much....

jrichker · Oct 10, 2014

Backwards engineering: the exhaust air exits under the car, so most of the duct work is hidden. Therefore an extractor duct might be just the thing in this case.

How it works: if you know how a venturi works, you get the picture. See http://en.wikipedia.org/wiki/Venturi_effect

Basic plan:
Rectangular scoop duct under the car 12"x4 " narrows down to 12"x 2" and then opens up to 3". The 3" side has lower air pressure, so you have a 12"x 1 1/2" slot cut in it that pulls air from the shroud on the backside of the intercoolers. The dimensions are approximate, but they will give you an idea of what it looks like.
Use the exhaust on a shop vac to power the model for this gizmo, and you have a way to build one that fits in the space you have available.

95BlueStallion · Oct 11, 2014

The rear of that Torino/Falcon seems like the best logic. Obviously it works there, which is damn near the same location as you would have it on your car. I do really like your scoops, and think they add a custom element and a touch of "Mad Mike" to the car. What if you spent another 24 hours and shaped them kinda like this?

Or

I mean hell, I just spent 23 hours drawering those with my laptop mouse.

And the reference:

CarMichael Angelo · Oct 11, 2014

95BlueStallion said:
The rear of that Torino/Falcon seems like the best logic. Obviously it works there, which is damn near the same location as you would have it on your car. I do really like your scoops, and think they add a custom element and a touch of "Mad Mike" to the car. What if you spent another 24 hours and shaped them kinda like this?

Or

I mean hell, I just spent 23 hours drawering those with my laptop mouse.

And the reference:

Admittedly, Your design would've looked better. (I did say would've). And if there was much left of the scoop to try and modify I might just have tried that.
But.
It's too late now, I did what I did not want to do, and cut a gi-honkin rectangular hole into the lower quarter to allow me to recess a "version" of an IMSA style scoop.
I was able to use part of the scoops that I made, so as to not completely throw away 3 days worth of work. I hope to hell these versions turn out better than the previous ones. I don't know if I can even get one roughed in, I am literally on fumes in the argon bottle, and the recessed scoop is actually gonna require welding into an area that was slathered with factory seam sealer.

Hmmmm, let's just create a mental picture shall we?

Me, laying my side attempting to TIG in the recessed scoop. ( a process that I'm barely comfortable with on a bench) All while trying to control the foot pedal, welding 18 ga. mild steel to galvanized steel .022 ga into an area that's bound to be fouled w/ the aforementioned seam sealer..............

Big fun.

madspeed · Oct 11, 2014

Liquid nails outa do it

stangboy · Oct 11, 2014

madspeed said:
Liquid nails outa do it

...or JB Weld

CarMichael Angelo · Oct 15, 2014

Something to talk about.

Whether it's better than the previous version(s), one side is roughed, and permanently attached. I actually dreaded doing something like this because I knew what it would be like to try and weld converging angles against a body panel. I started trying to do it with the TIG, but I had trouble focusing the heat on the panel that needed it. In the end, I bailed on the TIG and MIGGED it, simultaneously ending up making a mountain of extra work having to grind down the big assed welds.

I thought I could reuse part of the old scoops, but that was not to be. It took longer to make just one of these son of a bitches than it did to make the other two.

For better or worse, judge for yourself.

The grille cover is mild steel BBQ grille. It's heavier than the aluminum stuff I pictured on the other scoop, but I can weld that stuff to the scoop, and be done, whereas w/ the aluminum, I'd still have to rig up some way to retain the grille.

I'm done rigging.....( At least for today):

While it wasn't that hard to build it, it wasn't w/o it's challenges. The inlet ramp was the biggest pain in the ass to make. It crowns, rolls, and twists all at the same time.
I'm gonna take a break from the next one. While it still has to be the next thing I do to stay on track, I need to get the steel dust out of my eyes, nose, and mouth first.

All-in-all I think they look better than the first attempt, and there's still enough of that thing hanging out there that I'm sure that air will get forced in there.

jetmech807 · Oct 15, 2014

Looks good. Just think of all the fun questions you'll get at cruise night.

RacEoHolic330 · Oct 15, 2014

I like it. Definitely will be a conversation piece. It will look great blended in and painted. I'm glad you kept it square. Flows well with they boxy-ness of the car.

stangboy · Oct 15, 2014

Not bad. It looks a lot better than the other ones. They will definately be a conversation piece at cruises and car shows. As for function, it looks like it should get the job done.

hoopty5.0 · Oct 16, 2014

I approve. Although my OCD can't decide if it is truly bothered that the top of the scoop doesn't line up with the body line just above it, or just tickled it enough to notice.

CarMichael Angelo · Oct 16, 2014

hoopty5.0 said:
I approve. Although my OCD can't decide if it is truly bothered that the top of the scoop doesn't line up with the body line just above it, or just tickled it enough to notice.

I hear what you're saying, and I see that too. (That's why I'm not standing on a box blowing my "look at my cool new junk" horn).

The scoop itself does follow the body lines. Before the trim angles were installed, it was a perfect rectangle that matched the bottom seam, and the top body line exactly. Each piece of this thing was a "cut and weld", and was Tigged together before installation against the body. Those pieces that make up the top line, and bottom line mating surfaces were the last to be made, and consequently came as a oh well,...it is what it is after the fact. Had I widened the mouth, and narrowed the rear, the angles would've followed the body line instead of angling away. This is one of those things where having paid more attention in the higher level math classes might have been prudent. Bodywork and paint will be my friend here, as right now the floor, and the three inside surfaces of the opening is planned to be black, and the conflicting side angles, and the rolling ramp will be orange. So all the eye will see is that satin rectangular opening against the body.

elarm1 · Oct 16, 2014

You have a hole! I can dig it.

hoopty5.0 · Oct 16, 2014

It'll look great either way

Boosted92LX · Oct 16, 2014

I like it, Mike.

I've always liked these cars... and if you keep this up I may have to find my own. A more simple, V8 version of course..

Build Thread 1978 Mercury Cyclone. The pig is in the pen.

84Ttop

They make new pistons every day, so why worry?

madspeed

Colonel Mustard

Bullitt347

I have been doing it wrong this whole time

jetmech807

Bullitt347

I have been doing it wrong this whole time

jetmech807

jrichker

StangNet's favorite TOOL

95BlueStallion

My assy trans to myself

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CarMichael Angelo

my rearend will smell so minty fresh,

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madspeed

Colonel Mustard

stangboy

CarMichael Angelo

my rearend will smell so minty fresh,

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jetmech807

RacEoHolic330

I like to dress like a pretty girl

stangboy

hoopty5.0

mechanicus terribilis

CarMichael Angelo

my rearend will smell so minty fresh,

elarm1

hoopty5.0

mechanicus terribilis

Boosted92LX

It's only an inch or two. What's the big deal?

Build Thread 1978 Mercury Cyclone. The pig is in the pen.

They make new pistons every day, so why worry?

Colonel Mustard

I have been doing it wrong this whole time

I have been doing it wrong this whole time

StangNet's favorite TOOL

My assy trans to myself

Attachments

my rearend will smell so minty fresh,

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Colonel Mustard

my rearend will smell so minty fresh,

Attachments

I like to dress like a pretty girl

mechanicus terribilis

my rearend will smell so minty fresh,

mechanicus terribilis

It's only an inch or two. What's the big deal?

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