More Pix...Cold Air Intake (slow connection beware)
Here are some pictures of my cold air intake. Used a dremel tools to cut through the rad. metal housing. Went to Home Depot and grabbed some heater hose and plastic drain connector. Moved the reserve overflow container. (make sure it's lower than the top of the rad.)
https://www.rx7club.com/forum/attach...&postid=576778 |
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final picture. enjoy. :)
https://www.rx7club.com/forum/attach...&postid=576791 |
Looks Good - loods lighter than a lot of the "home made" jobs I've seen! What did you use to connect the snorkle to the duct pipe? Is that one pce of black plactic or did you use a rubber connecter to splice the plastic thingy to the duct - and if so, what exactly is the rubber connecter? What did you use to collect air in front of the rad? And finally, how much of the snorkle did you remove - appreciate your reply - once again, nice job -
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Originally posted by Northern 7 Looks Good - loods lighter than a lot of the "home made" jobs I've seen! What did you use to connect the snorkle to the duct pipe? Is that one pce of black plactic or did you use a rubber connecter to splice the plastic thingy to the duct - and if so, what exactly is the rubber connecter? What did you use to collect air in front of the rad? And finally, how much of the snorkle did you remove - appreciate your reply - once again, nice job - |
very nice job! I'm trying to duplicate the same thing so hte picture wil help me out with my project.
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Originally posted by crazy dog very nice job! I'm trying to duplicate the same thing so hte picture wil help me out with my project. |
Oh I forgot to mention that the total mod cost was like $13 not including the cost of owning a dremel tool and a drill.
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:eek: OMIGAWD ARE THOSE EMISSIONS CONTROLS I SEE??? ARGGGGHHHHHHHHHHHHH!!!!!!!!!!!
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do those give more power? i know in theory it should work, but do you really notice a difference?
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Originally posted by YellowJacket :eek: OMIGAWD ARE THOSE EMISSIONS CONTROLS I SEE??? ARGGGGHHHHHHHHHHHHH!!!!!!!!!!! |
Originally posted by adssoccer do those give more power? i know in theory it should work, but do you really notice a difference? |
http://pittdp.homestead.com/files/uh01_1b.jpg
I notice a little but not much, I would say it might give 3-5 hp but of course that is not much at all, But I do like the way it looks on my car. |
I bought the EXACT same heater hose from Home Depot, I didn't find that sweet connector though I'm gonna have to go back and look for that one. I did it over the summer, I notice the biggest difference getting off the line after extended highway driving....without it, the car chokes on it's own fire breath. I've iced my carb quite a few times....be careful in the colder weather (Canada) at highway speeds. I pulled my air cleaner lid once and saw ice entirely covering the back barrel and partially covering the front barrel. No wonder I was walking all over everyone, that is until it started cutting out.
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Originally posted by NanaimoRx-7 I bought the EXACT same heater hose from Home Depot, I didn't find that sweet connector though I'm gonna have to go back and look for that one. I did it over the summer, I notice the biggest difference getting off the line after extended highway driving....without it, the car chokes on it's own fire breath. I've iced my carb quite a few times....be careful in the colder weather (Canada) at highway speeds. I pulled my air cleaner lid once and saw ice entirely covering the back barrel and partially covering the front barrel. No wonder I was walking all over everyone, that is until it started cutting out. |
Please excuse me for my lack of car knowledge, but where does the end ( the end by the radiator) lead to? Does it just sit there, or is it attatched to something?
Also, where did you relocate your overflow tank to? I'd like to do this someday soon, since it's cheap, easy, and an improvement over stock. thanks |
Originally posted by .:Adam GS:. Also, where did you relocate your overflow tank to? |
If your asking where the end of the hose goes. I got really lucky, the opening that was cut from the side of the radiator housing was a perfect fit for the hose. A nice snug fit, so it won't be going any where. ļ Also since the hose is made from soft aluminum metal I formed a funnel shape at the end to catch more air. Now this is were my differs a bit from other setups. I have the funnel parallel to the front of the radiator instead of pointing to the front of the car. The funnel in theory is to catch the air the is being bounced off the radiator. I hope this helps. :)
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is there any sort of power increase on a n/a car with the cold air intake? does it run any smoother?
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thanks..
so, in lamen's terms, just cut a hole in the metal and shove that hose in there so it don't move no more? lol.. I'll try that this weekend.. IF i can borrow my neighbor's Dremel...:eek: |
Originally posted by riffraff is there any sort of power increase on a n/a car with the cold air intake? does it run any smoother? Originally posted by .:Adam GS:. [B]thanks.. so, in lamen's terms, just cut a hole in the metal and shove that hose in there so it don't move no more? lol.. B] |
I cut a hole so that the hose goes through to the cold air side and is firmly mounted. I relocated the hose under the intake line using a L bracket, I can get you guys a nother pic if needed.
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could you put a cone filter on the end of that and connect it to a cold air box? would that save you from having to have the air filter inside the blue housing?
cheers' |
One suggestion - I'd also recommend screening off the hose where it enters in front of the rad - Bugs and stuff will end up splattered all over your air filter without something there to stop them - especially if you do any highway driving at night. I used regular nylon bug screen (just a thought)
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You can do it but rist getting it very wet in rainy weather. Thats is why I did not do it.
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In theory the colder the air the more dense it becomes which for a given quantity of air will give you more power, assuming the carb settings are changed.
The theory is that for each 12 degrees cooler you get, there is a one hp increase. In the case of a RX7 cruising at 60mph the difference between under bonnet and outside air temperature is about 5 degrres giving a theoritical 1/2 hp increase. In practice it frequently decreases without dyno tuning to recalibrate the carby settings. In a turbo set-up the incoming air is boosted which incrreases temperature consderable, thua an intercooler really works at high boost. In the 12AT set-up which uses 6lb boost the factory set-up is without an intercooler. Run a 13BT at 12 plus boost. its essential. Thus for a 12A a cold air duct is not necessary, like most body kits its cosmetic to make the car look fast. However if you are doing 1/4 mile events and the car is standing around then cold air ducting will be an low cost advantage. In many cases the problem is lack of air flow is more of a problem and the ducting will reduce flow and topend power.l If you have seen for example REVHEDs system the snorkle is opened up to cope with the increased demand for air with a worked motor. The final point is the 12A carb is fed warm air if the outside air is cold in order to keep the air- fue mixture constant. Thus putting on cold air ducting is irrelevant. |
you need to remove the flapper valve thingy in the snorkel so you will not suck air through the bottom of your snorkel where your preheater hose used to be. This is controlled by a thermo spring so if you get cold air it will engage the flapper valve and you will suck air through the little hole and out of the engine compartment, negating your cold air intake. But otherwise it looks great!
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great.. thanks for the low down
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Originally posted by yayarx7 you need to remove the flapper valve thingy in the snorkel so you will not suck air through the bottom of your snorkel where your preheater hose used to be. This is controlled by a thermo spring so if you get cold air it will engage the flapper valve and you will suck air through the little hole and out of the engine compartment, negating your cold air intake. But otherwise it looks great! |
looks nice dude
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