doesn't do anything well, point here, is that need performance plugs and wires.
where i live doesnt need catalyist converter so i took it out, and had 1.5 inch tubing with glass pack, also another thing I don't have A4LD transmission, i have older type C3 transmission 3 speed , usally have alot power at high end rpm going from 2600 rpm and higher to red line
Hi i think i removed that thing just making sure i pulled the right thing out. It was right next to the air filter in that tubing. Also what is the point of having it there. It wont effect smog in any way will it? It looks like with that thing in there it blocked another hose that connected to the bottom of it. After removing this my cars temp seemed high though i think it was always high and is just the gauge but i just want to make sure its the right thing i removed it was a pain to remove but i slid it out eventually. http://img.photobucket.com/albums/v7...rsilencer2.jpg http://img.photobucket.com/albums/v7...rsilencer1.jpg
Hi i think i removed that thing just making sure i pulled the right thing out. It was right next to the air filter in that tubing. Also what is the point of having it there. It wont effect smog in any way will it? It looks like with that thing in there it blocked another hose that connected to the bottom of it. After removing this my cars temp seemed high though i think it was always high and is just the gauge but i just want to make sure its the right thing i removed it was a pain to remove but i slid it out eventually. http://img.photobucket.com/albums/v7...rsilencer2.jpg http://img.photobucket.com/albums/v7...rsilencer1.jpg
sorry but thats not the air silencer,,,thats the door for the heat tube under the aircleaner that goes into the exhaust manifold,,,,,the air silencer is the big black box near the throttle body,,i used a dremel and gutted it out,,,when you look in it now the inner diameter is like a little under two inches,when you gut it you get around three inches,just gut it out ,,,,you will notice more power by ditching the catalytics,,,,
Thanks mustangcar for your response i put that thing back in now but i followed that black tubing and found nothing blocking its air flow. Only thing i noticed is that the tube is round then gets smaller in a more square like shape. But thats the shape of the tubing its self nothing is actually in it. This is on a 1986 mustang if it makes a difference in the year.
the black air box iam refering to has the Ford logo molded on it,,yes you can see through it but the tube is very narrow the inside has baffles that are swirled,,,there is really two tubes in there cut them out,,in the end your black air box will be like an empty plastic gallon of milk,,you need a side cutter dremel bit ,the kind that cuts tile,its fun with that,or start with a drill bit and a small hack saw,,,some just put cold air intake tube application for a 95 civic honda that looks neat,,but i really like paper filters,,they don't flow as well but they do filter dust better
My tube doesnt have the ford symbol on it i dont think ill have to check it again. During the day maybe 2morrow ill take a picture of it to show you. In that tube i didnt see anything in it though it does get narrow but its the whole molding thats smaller i might just black tubing to rig it myself or something ill have to take a couple more pics thanks for explaining it more though.
I would have to respectfully disagree with the statement that paper air filters filter dust better. K&N filters (not the generic import cone filters) have an oil on them that I believe actually filters dust better than a paper filter. I may be wrong, but I believe that's what the box said
Also, I believe the easiest way to do the air intake silencer is to get exhaust pipe of the correct length (mine was 3") and just completely replace the whole tube. If I can figure out how, I will take a picture of the silencer and upload it so you can see what it looks like (on a 92 anyway).
yes thats one way with the exhaust tubing,,,,when you gut it you'll be able to see the inside of the whole black box not just a straight narrow spiral tube,,,,when i put a strong light on my buddies KN filter i saw very small pinholes,,didn't like that,,i want to stop the micro dust,its tough for dust to pass a paper filter as those are very restrictive,,yes the oily residue would stop some dust but can't see as a better filter, for performance aftermarket filters are a better choice,, i don't go for whats printed on the box they'll tell you anything to sell their product,,,but its your car can't say much more
If I paint a piece of exhaust pipe to put inplace of the silencer, should I use High heat paint? Thanks.
There's no heat on the intake, use regular engine paint.
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66 Coupe - CandyApple Red, 2 barrel 289, C4.
66 Coupe - (father-daughter project). Tangier Orange, 302 with AOD, 17 inch Bullit wheels.
69 F-100 - 351c. Emerald Green Metallic paint. Still "in progress".
68 Barracuda - Rusted out project. 318 in the frame rails for now. Maybe a 360 in the future.
00 Mustang - (son's car) V6, 18 inch Saleen wheels.
From what I have heard and read, there are multiple locations for air silencers. There is not simply a single type of air silencer. On T-birds, it is a metallic box behind the fender. On my car, it is that plastic 'expansion chamber' between the air filter and the throttle body. I went outside to my car and ripped it off. I looked inside, and as one person said, it chokes the diameter down to about a inch. You can see the spiral porting meant to reduce turbulence. I'm going for engineering, and with some fluid mechanics under my belt, I can tell you that smaller diameters reduce flow when volume and pressure stays the same. When the pressure increases, flow remains the same:
Try drinking a milkshake through a soda straw. Yeah, it's possible, but you need some serious pressure differences
Now try it through a milkshake straw (a thick one). Now, you can achieve the same flow with less pressure. You don't pop your sinuses.
We all know that en engine is basically a big air pump. So why block its lungs? I'm going to the store to buy some 3" PVC. I don't care what people say about PVC being fragile in a car- Polyvinyl Chloride is awesome stuff.
One thing I can't figure out is why there was a big *** spring inside my TB? It was just sitting in there between the hose and the TB. I thought it was supposed to be between the hose and the silencer!
So, anyways, another analogy is this: Take a piece of 1" pipe and try to trumpet a sound out. When you hear a loud sound, that means it was resonating. The waves collectively grew and there was minimal interference. But, you should notice that it took a lot of air flow to get that resonance (also depends on length) If the length of the tube is evenly divisible by the wavelength of the sound waves traveling through it, it resonates. Or, if one end is closed, it REALLY resonates... This is also similar to harmonic vibrations in mechanical systems, but I don't want to break out the diffi-q to talk about it.
Anyways, now take a 2 or 3" piece of pipe (diameter). Now trumpet. Wow. It took the same air-flow, but a much lower pitch didn't it? Now, what if the pitches were the same? Yup. That's why removing that piece of junk makes your car sound better. Improved air flow and less turbulence allows it to resonate at lower frequencies. That's why you get that throaty sound. The resonance doesn't occur up in those hoses- it happens in the pipes (so resonance isn't the key factor) The key factor is that with no silencer, the air has less turbulence.
Less turbulence, constant direction, and less restriction (by more diameter) = MORE VOLUME.
More volume = more power (most of the time)
Unfortunately, that volume is only increased by a lil' bit. That's why the HP difference is minimal- but still something. You'll also get better Gas Mileage because your engine can do more with the same amount of gas (provided you accelerate the same).
That's also why superchargers increase mileage. The drastic increase in air volume allows the engine to displace more air (not fluid volume) because more air is getting inside each cylinder. So, your gas gets you further.
I hope this helps- I'm not much of a mechanic yet, but I know all the math behind it.
Last edited by dawrr; 12-22-2006 at 02:50 PM.
Reason: Sounded like a jerk
This thread sure got a lot of heat on it some confusion also. Air Silencer ( suspose to make quiter running engine. Location (already hit on) ( just past the air filter box is a short tube runs into the air box which a larger rectangular black bos w/ ford written on top, if stock. Inside this box runs a ristricter tube, runs entire length of box and restricts air passage down to about a bit over an inch or so. I had to use vicegrip to grasp the end and twist and then pull on it so that it would ome out. You need to do this from both ends of the box. If you were to put a K&N filter on or a larger TB on you probably wouldn't notice any gain with out removing this,as its net effect is somthing like having a choke half way closed restricting air flow. There may be more restrictions inside the filter haven't looked theere yet
Here is my 89' 2.3 lx engine that probably would solve other people problems as well as mine. If i open that tube the silencer is inside of it right? not the other box attached to it. And one more question i already bought an air intake for my mustang do i even need to remove my silencer because i have to take the whole thing out anyway in order to replace it with my new Air intake which i also included in the pics.
