flow meter??
05-18-09, 06:10 PM
#2
Environmentally-Hostile
I assume you are talking about the factory AFM. You cannot take that off unless you are going to a carb setup. Car will either run in limp mode or not at all. There are really no aftermarket 'intakes' for these cars, although I'm not sure whether you mean an actual manifold or a cold air intake.
05-18-09, 06:21 PM
#3
the AFM has to stay. if you want an intake on it you would have to buy an adapter that bolt's to the AFM, that adapter allows you to install a cone air filter of your choice..simple as that. the adapter's go for like 10bux last i checked..here is a picture of what you need if you dont understand.
:AA:
:AA:
05-18-09, 06:41 PM
#4
84SE-EGI helpy-helperton
Link to prior post on this (Search does wonders); https://www.rx7club.com/showthread.p...light=Cold+Air
While what I have is for an SE, and I know you're talking about the 12a carb system, you could certainly rig something up that's similar that would perform the same function. As the others have pointed out here, the idea is to get the shortest path from the outside to your carb while also allowing for some sort of filtration. Just drawing air from outside or in front of the radiator will have a performance enhancement because the density of air is directly related to temperature. Higher air temperature carries less O2, and as such, you'll have less efficient combustion the higher the air temp goes. With that in mind, here's my installation;
Mariah Motorsports air duct leading directly into the stock SE airbox with K&N filter. What you can't see here is that if I shine a flashlight into the duct from this angle, you can see the top of the filter inside the box, so it's a straight shot, and gets some 'ram' effect at higher speeds, aiding in both filtration and flow.
This shot shows the internal ducting between the back of the headlight lid and going into the airbox. Notice that I used the stock SE airbox duct material to make it look as stock as possible. What SE owners will know is that Mazda designed in a cold air intake from the start with the EFI 84 SE's, as there was already a 90deg bend going from the airbox to in front of the radiator shroud. This pulled in cooler air from this high pressure location, but the downside was that crossing any kind of water of greater than 4" depth would cause water to blown up into the duct, soak the filter, and the car would die. In the 85SE's, Mazda extended the front duct all the way across the front of the radiator and it came BACK into the engine bay just in front of the battery, on the other side of the engine bay. While fixing the water problem, it still draws air from inside the engine bay.
My installation corrects this, gets a short path to the stock airbox, uses the stock AFM and piping, and I think it makes a difference in both performance, appearance, and sound. With the car running, you can stick your hand into the NACA duct and feel the air being drawn inside - when someone revs it up, it roars from the front end, which is an improvement in my book. HTH,
While what I have is for an SE, and I know you're talking about the 12a carb system, you could certainly rig something up that's similar that would perform the same function. As the others have pointed out here, the idea is to get the shortest path from the outside to your carb while also allowing for some sort of filtration. Just drawing air from outside or in front of the radiator will have a performance enhancement because the density of air is directly related to temperature. Higher air temperature carries less O2, and as such, you'll have less efficient combustion the higher the air temp goes. With that in mind, here's my installation;
Mariah Motorsports air duct leading directly into the stock SE airbox with K&N filter. What you can't see here is that if I shine a flashlight into the duct from this angle, you can see the top of the filter inside the box, so it's a straight shot, and gets some 'ram' effect at higher speeds, aiding in both filtration and flow.
This shot shows the internal ducting between the back of the headlight lid and going into the airbox. Notice that I used the stock SE airbox duct material to make it look as stock as possible. What SE owners will know is that Mazda designed in a cold air intake from the start with the EFI 84 SE's, as there was already a 90deg bend going from the airbox to in front of the radiator shroud. This pulled in cooler air from this high pressure location, but the downside was that crossing any kind of water of greater than 4" depth would cause water to blown up into the duct, soak the filter, and the car would die. In the 85SE's, Mazda extended the front duct all the way across the front of the radiator and it came BACK into the engine bay just in front of the battery, on the other side of the engine bay. While fixing the water problem, it still draws air from inside the engine bay.
My installation corrects this, gets a short path to the stock airbox, uses the stock AFM and piping, and I think it makes a difference in both performance, appearance, and sound. With the car running, you can stick your hand into the NACA duct and feel the air being drawn inside - when someone revs it up, it roars from the front end, which is an improvement in my book. HTH,
05-19-09, 07:37 AM
#7
Was Bptznumba1playa06
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Link to prior post on this (Search does wonders); https://www.rx7club.com/showthread.p...light=Cold+Air
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