After 20+ years, I wonder how many of the OE pieces are still in place? The first pic is the DEFLECTOR, Air Lwr. The second pic is BAFFLE, Rad Air (Lwr). The third pic is BAFFLE, Air Lwr Otr--LH, which serves to somewhat protect the Orb of Power (vacuum tank).

JamesC

 

The fourth pic is BAFFLE, Air Lwr Otr--RH. The last pic are RH and LH off car (the two small holes in the LH are not OE, BTW).

JamesC

 

The 4th pic just died.

My Iroc was missing just about everything under the front bumper cover. I've got most of it back together now. I still need to find the covers left & right.

 

Since the above plastics have to do with 'air,' note the following, especially #66 and #77. While the file is for 89-90 models, my 85 IROC is equipped with them.

JamesC

 

My car has all of them still, except the one on the drivers side is bent because the PO got hit in the drivers side fender and it bent the plastic.

 

as do i , please let me know if you find a source . thanks , good luck .

 

Drew you need left and right?

http://i283.photobucket.com/albums/k...20sale/231.jpg

 

Curious, part #63, what the radiator baffle shown in your second pic, I notice the "teeth" on the front edge are tucked in above the inside of the chin spoiler.

On my '90, the teeth are attached to the underside of the chin spoiler--you can actually see a tiny peek of it when looking for it at the front of the car. It appears factory, anyone else's like mine or are they all like James's?

 

It would 'appear' that the baffle is designed to be placed above/inside the spoiler. I'll be interested to see what other members say.

JamesC

 

I looked at an 88 earlier today. While the baffle was missing, from wear marks, I'd say the baffle went above.

JamesC

 

Interesting, thanks for checking that out. I'll have to get under mine and get a better look at things.

 

Just had a look underneath my car.
The baffle goes over the chin spoiler covering the connecting teeth.

Maybe after repainting it got re-assembled the wrong way around. You said your car was repainted once.

 

That's a good possibility, looks like I'll have to crawl under there and reverse it when I get back home later this year. Thanks for the heads up.

 

The baffle goes above 100% sure. I need to figure out how to put one on a spoiler that never had one, or just get on with the mounting hardware. Does anyone have or can get a good pic of one? Maybe I can make some. Also, what is it for? Is it there to keep the spoiler stiff for high speed aerodynamics?

 

From the shape and location I think it's as much support as preventing the front GFX from scraping/folding when scraping.

 

Note that the piece is called a BAFFLE, Rad Air (Lwr), and not brace. What's that mean? Dunno. I wonder, however, if the baffle and deflector/air damn don't work in conjunction to direct air upward, which their design/shape would seem to indicate.

JamesC

 

I don't mean to be disrespectful, but if that really was the intended purpose of the piece it's the worst designed aero piece I've seen in a long time.

I accept if someone at GM hoped it would help, but I can not expect an engineer to expect it to work in assisting the airdam.

The way I understand the deign, and please mind, it's only my personal interpretation and I would accept any good argument in proving me wrong, is as following:

The airdam/deflector is an aero piece whose purpose it is to create a high pressure area in front of itself and a low pressure area behind itself. This helps air searching an easier way of getting past the airdam, which ideally is through the radiator.

To provide the lowest possible hindrance the ideal shape and position for the baffle would be if it were non-existant. It would not hinder airflow in front of the aidam/deflector that way, and would provide optimal flow towards the radiator.

GM put the thing there for a reason however. Possibly the intention would have been to direct the air that runs over the baffle towards the radiator in an angle that would not have a negative effect on the workings of the airdam/deflector.

As you can see in the image below (that airdam is taller and wider then stock) all the baffle really does for the airdam is that it effectively prevents air from moving in the area behind the front GFX, limiting the amount of air the airdam can effectively "deflect" towards the radiator.



It might be just me, but I kind of fail to see how it assists the airdam.

Apologies for diverting this far from the original topic.

 

I guess they killed 2 birds with 1 stone on this part, limits high speed deflection of the spoiler and cuts out some of the turbulence made in the void behind the bumper. I also thought it helps direct air to the filters, but it looks like the spoiler directs air over it

 

Actually the whole under car plastics question is interesting. From the dictionary, for what the definition is worth:

Baffle: (Engineering / Mechanical Engineering) to check, restrain, or regulate (the flow of a fluid or the emission of sound or light).

Or air?

JamesC

 

Air is a fluid in engineering.

My guess--without thinking much about it--is that with the center baffle, they are trying to control the type of flow, be it turbulent flow or laminar flow (most likely the latter), as determined by what's known as a Reynold's Number:

http://en.wikipedia.org/wiki/Reynolds_number

Again, just speculating based off of fluid dynamics from when I was working on my chemical engineering degree.

As the air hits the air dam, the air is surely exhibiting turbulent flow which is unstable, but by having that baffle in front of the air dam, it helps stabilize the upward airflow, smoothing it out by channeling it.

 

Ok, that appears to make sense.

Only had the basics of fluid dynamics covered during my education, and I somehow never completely had all the interestings tuff covered.

I assume the purpose of the part will then lean towards changing from an open channel state to a wide duct like kind of controlled state, which does make sense.

Having thought about it a bit, I can see how the air going to the air dam will be channeled through cleaner compared to having an empty space behind the front GFX piece.

 

My 89 iroc has the baffle and I see how it works but I need one for my 92 Z convertible which is running hot and one for my 92 purple haze Z which I am starting on. The baffle seems to work similar to roof line and rear deck of a nascar stock car. Air goes over the roof and follows the rear glass over the spoiler providing down force. I saw a special on them once. An indy car has three thousand pounds of downforce and at speed could run upside down. A Nascar has three hundred pounds of down force. If anyone knows where to get a baffle please advise.

 

http://www.rickscamaros.com/camaro-r...1987-1992.html

JamesC

 

Hey, Uncle,

The following site apparently has both the LH and RH pieces (14079874 and 14079873).

http://parts.nalleygmc.com/products/.../14079874.html

JamesC

 

I was searching through threads, looking for info on air dams. Came across this one.
Ok my car runs a hot, i recently flushed the Rad, and changed the cap. I have a thermostat to put in. But my big question is, does it really make a big difference to have a air dam? My car does not have one. I read the pro's and cons in this post, but still not sure what your saying. So could you explane in layman's terms. Thank you

 

Yes.

My car overheated without, but stays cool with airdam.

In laymans terms, without airdam most of the radiator surface will be unused.

The air entering through the grille insert only really covers like 20% of the radiator surface, and is very erratic in it's direction.

The airdam prevents the air entering underneath the car from moving through unhindered. It's an obstacle. In front of this obstacle you'll get a high pressure area, behind it a low pressure area. The air wants to get into the low pressure area and will use the path of the lowest resistance. Part of that air goes through the radiator to fill up that low pressure area, effectively using more of the radiators surface.

 

Thank you Solitaire For great info. Does anyone know a place to buy? Or does anyone have a extra laying around they would like to sell? Thanks

 

Hawks has them for about $50.
For about $10-15 and about 30 minutes work you can DIY one.

 

Solitarie maybe you could make one for me and I pay you for it. I have gone to dealer, ricks, third gen ranch, and a few other part places, with no luck. I flushed Rad over last weekend. Drove it today and it over heated to the point of leaking on the ground. Oh wow just looked, you are from Germany. Ok is there any one else who makes one that works? Thanks

 

Yep. that´s the only problem. Shipping.
I can give you some detailed instructions (maybe over PM to not clutter this thread with fabrication details), and I made my current airdam with only a handsaw, scissors, a few nuts and bolts and the materials required. Oh, and a drill. No special tools required.

Why not pick up this one? Shipping is the only thing preventing me from ordering the original.

http://www.hawksthirdgenparts.com/airdams.aspx

 

EUREKA! Bump on this thread because i have been looking for what this part is for about a year now and nobody knew what i was talking about, lol.

Numbers 63-65 i believe in the first PDF file are exactly what i was looking for.

Only problem is after Googling for hours, the only vendors that have them they are discontinued.

I still have the side pieces to the "duct", just don't have the pieces that attach to the chin(63), and the piece that attaches to that(the "duct") as well as the piece to cover the hole where the hood latch is.

If anyone has come across these parts, or has successfully made their own, please i would love to know where, or how.

Thanks in advance for any help

The main reason is the fact that on the highway, when i got behind a truck with shiny doors, I noticed that the chin spoiler was flapping rather severely, which i realized is why the car shakes anywhere over 50mph.

 

Nice looking camaro you got there will. Looks a lot like mine..haha
What rims do you have on it? Thanks

 

Ironically we have the same car. Even more ironically I am in the process of doing the exact same paint job you already have. Before I wasn't sure how it was gonna look, but now I am excited as hell to get done with it cause it looks awesome!

Only thing i'm doing different is I may go a semi-gloss on the black, and doing the ground effects black with it. Front bumper will probably stay red, so i can tie the black to just the headlight buckets. Then the rims are getting powdercoated black.

Then polish it off with a 1 inch drop, hide the antenna, blackout the brake lights and its done. Nice and simple; wish it that simple to finish, lol

Wow, way off topic, but I cant help talking about my Camaro, lol.

shoot me a pm camarosrock

 

Oh, I forgot to tell you what rims, proline alloy, pepboys had them but discontinued them. I got them as a trade on the stock 15 in camaro rims

 

Hey James i was wondering what size screws are for the 2nd pic baffle?
I put the airdam on, and i have tha baffle. Has like metal clips attacked.
Just not sure how to install it. I'm thinking it goes on inside of front lower
ground effect. close up pics would be awesome!! Thanks for sharing the info.
That is what prompted me to get the airdam and baffle. I had the rest on the car. Great thread

 

I checked various sources but failed to find the size. You might try this as I've found it very useful over the years: Hit the bone yards, not only for the parts you may need, but also to see those parts are assembled. I'm not sure that my close-up is any better than pic 2. Hopefully, the pic is clear enough to show that the metal piece goes inside the front ground effect. I seem to recall that the metal piece is actually attached to the ground effect and that the screw secures the baffle to the metal piece.

JamesC

 

will an 85 front end bolt onto a 91 i like that front cap better and i want to remove the ground effects to make it look more muscular? just currious?

 

My 92 RS only have the the driver's side baffle and the air deflector, but only two out of six requred screw are attaching on the passenger side. I bought six new bolts with the exact same size. The remaining 4 holes are too big to fit them so if anyone knows the right clip or brkets needed to attach the air dam into the lower radiator support and where to buy them I would appreciate it.

 

I've been searching all around but can't seem to find the baffle piece for my 1992 camaro z28 if anyone knows were I might be able to find this it would be greatly appreciated.

 

would like to know materials and dimensions to DIY one...

 

ok...after searching online, and different forums for help and advice, I've now came to the point of being tired of looking, and made an uneducated decision to go for it...here's what I'm going to use...per diagram - #65, 69, 70, 78, 79, 83, and 2 piece air dam...my wife's car has been on stands for several months while I fixed damage from wreck, and she's getting impatient wanting to drive it...if it doesn't overheat, GREAT...if it does, I'll just go back to searching...

 

Where would i find a baffle in Pic 2. I've looked in local So. Cal junk yards but 4rd gen Camaros are quite rare in junk yards and the ones you do find are picked to death.

 

try hawksthirdgenparts.com

 

here:
http://www.hawksthirdgenparts.com/pr...r-Air-Dam.html

 

does anyone have pics of all the air dams on a 91 rs

 

Yeah, please of your car has all air dams, please post pics

 

I think James' pictures in the OP pretty much sum it up. The only thing not shown is part 69 and the few parts around it which goes in between the radiator and the front grill. The flat air dam posted in the link to Hawks is the one that pulls the air back up to the radiator to keep it from overheating. All I'm running right now is that and the baffle between that and the front bumper.