hey everyone! just had a few questions about how the 20b intake system works...maybe someone can shed some light on this for me cause im a bit confused. first of all the snorkle to the air box is kinda strange. there are 2 closed air tanks that are attached to the snorkle. anyone know what they do? (ill try to post a pic) the other thing is at the actual air inlet (after the airbox). this is the strangest part... there is a "nose cone" looking thing which is moveable... and i believe is moved electronicly. it seems to be some sort of air restrictor. can someone tell me what its function is, and when it is active? also is it needed for any purpose? thanks.. ill try to post pics. -heath

 

That looks like an air mass(flow)meter. Since your doing the conversion and will be using a stand alone ecu, it will pritty much be useless.

 

The nosecone looks like a Center Body Diffuser that keeps supersonic shock waves out of the engine at high speed.
http://142.26.194.131/aerodynamics1/...eed/Page7.html

Those pipes that are blocked off look kinda like deck vents. Deck vents pipe air down to the lower decks, mostly to the engine room.

 

Just changed the airbox out for a cone filter on my Cosmo. I can tell you that the movable cone is indeed the airflow meter, if you are not running the Cosmo ecu or any ecu that needs one, ditch it.
The other two hoses leading to the snorkel are for the blowoff valve that feeds from the turbo outlet (brown valve upper right in your pic), and the inlet for the airpump for the catalytic converter. That can be left open but it makes a cow-moo sound
Looks like you dropped the air inlet duct that fed the original airbox too. Might pay to put it back if youre still going to have an airfilter in there, as it ducts cold air into that area.

 

thanks evil... actually i was having trouble posting the pictures of the cosmo snorkle (i will post now) , but thanks for youre active imagination! wow, you really get a diffrent feel posting in the 20b forum, compared to the FD Forum. the air is real negative in here... there doesnt seem to be too many people in here for the purpose of enlightening others. i get the feel that people are quite proud of there 20b conversions but are reluctant to be nice for fear of other 20b's on the road. sorry for the competition guys... however im just doing this to have fun, and to see if i can do it. i appologise for the fact that there are (heaven forbid) other 20b engines out there, and that someone else is interested in doing what you've already done. but seriously, people are too uptight in here... contrasted with the FD or FC forums where people WANT to help and share knowledge. sorry about the rant guys but i feel like the 20b forum is like some special 'click' that only the initiated can be a part of. i know you get tired of newbies but if someone is actually persuing a 20b project at least give them some respect. thanks rotaspec for a real response... its people like you that make the forum work!

 

well for some reason it tells me that i already uploaded the pics but they do not appear...oh well. anyway there are 2 tanks that are connected by tubes to the snorkle (on the side facing the ground). does anyone know there purpose? im just asking cause im interested, and wondered how the system worked... and evil, i was talking about those tanks not the turbo outlet, and waterpump outlet that i covered in the other pics.

 

 

Ah, now I see what you were talking about. I wasn't thinking of the cold air intake.
Anyways, the tanks are anti-resonance tanks. They quieten the intake noise.

 

The problem is that you didn't register with the NWO when you bought your 20B. Almost all of us here are obviously high-ranking members in the NWO, and we are committed to developing new technologies and not telling anybody about them.
http://educate-yourself.org/nwo/

The main thing you need to understand about the 20B forum is that the average members here are very advanced. That means advanced mechanics, advanced electronics, advanced math, advanced jokes, advanced insults, advanced debates, etc. Given that, re-read the threads in this section and you will have a better understanding of the tone here, Grasshopper. You are no longer in the kiddy section of this forum.

 

rotormotor> the smart *** replies that you may get in
this forum are in most cases the result of people recognizing
your inexperience.
If you cant recognizing the simplest parts you are in real trouble
taking on a project like this. I am not saying that you wont be
able to do the project. you might want to learn more of the basics before
posting questions. I have asked my share of questions on the forum
and found that I have usually gotten great support here.

matt

 

ok thanks guys... well obviously (and i know this) theres tons more for me to learn before i even get started. i now know my place and will work from there. so evil, or shall i call you sensi.... would you be willing to take on another pupil? i am ready to learn the way of the 20b! heath

 

LOL, like everybody else in the world, I have my particular strengths, but as far as the 20B conversion goes I'm only a couple of steps above Grasshopper. Hmm, I would have to be something that flies. How about "Dragonfly"?

Hehehe, if you don't even know what an AFM is you are going to have a very difficult time with this advanced project. My secret is to get help from the local smart guys. The internet is a great resource for information (and misinformation), but it doesn't replace good friends and good auto shops.

 

where are you?

mike

 

evil: true, good friends and "seasoned" mechanics do make all the difference. im lucky to have a few good shops in my area (the m2 guys are quite close) but im not so sure if they want to get involved with another 20b project. last time i was in there they had a CYM with a 20B mounted but not running. apparantly the guy who they were building it for threw in the towel and left them with the car. anyway they didnt really want to get involved with another 20b anytime soon . im trying to decide what would be the best ECU based on who can tune what in the bay area. i still have to call a few folks. oh about the air flow meter... i knew what the airflow meter was but i hadnt seen the "cone thing" before... i was thinking about the FD intake and wondering why they decided to change the design for the FD.

mike, im in oakland

 

we have 3 20b cars down here, soon to be adding a 4th.

mike

 

wow! thats all i can say mike.... are all of these your cars or 4 in your area (either way its cool). id love to see them sometime if im in the area. so are they mainly FC's?

 

i only have just the one. the rest are friends cars. they are all fc except for the b2000

mike