Updated pics of my Ram Air/CAI

[djb383]

These pics are with the battery removed. In the upper left corner (pic #1) is where the 2 1/2" tube enters the factory air box and is just about a perfect fit. From the air box, the tube goes down through the existing hole (pic #2) in the inner fender (I guess that's what it's called). This hole is also a perfect fit. From below the inner fender hole (pic #3)the tube goes to the small plastic grille piece next to the drivers side fog lamp. I cut a hole in the grille piece and fit the tube through the hole (pic #4). This set up provides cool outside air (zero under-hood hot air) and ram air effect at speed.http://img216.imageshack.us/my...h.jpgclick to enlarge

[BOZACK]

Works for me. I would like to see it from underneath.

[ZubenElGenubi]

FYI. Can't see the first pic, but can see the second. I'd like to see the intake from the front, too. I think you'd eventually want to replace that tubing with smooth hose to reduce turbulance.

[northvibe]

i cant see anything either you could try http://www.imageshack.us i use them for my image hosting needs and its free

[drunkenmaxx]

i gotta say, i think that tubing will ruin the effect of the ram air due to the ridges.

[BOZACK]

I think it is a great mod. Looks real good. Any plans to change the tubing to a smoother tube?

[Raivis]

u may need a secondfilter to keep alot of water out. other wise sweeeet! i was thinking of getting a ram air kit from mimousa.com soon post more pics if possable

[djb383]

I don't see how the intake tube surface really matters - tube diameter yes, but surface, no. Stop and think about - the air ahead of the throttle blade is moving very slow because its movement is restricted by the throttle blade. The throttle blade is only slightly open 99% of the time the engine is running. The air behind the throttle blade (engine side) is moving fast and is very turbulent because the pressure is lower behind the throttle blade and is higher ahead of the throttle blade and the blade itself is creating turbulence. The whole concept of a throttle is to greatly reduce the amount of air entering the engine. There's virtually no turbulence in slow moving air. At 70 mph in OD the throttle blade is only slightly open. With a ram air intake, the air that is being packed into the intake almost has no place to go because the throttle blade is only slightly open, so therefore it has to be moving very slow because it has no place to go. Since the air is moving very slow, there is no turbulence.

[binary]

Quote, originally posted by djb383 »I don't see how the intake tube surface really matters - tube diameter yes, but surface, no. Stop and think about - the air ahead of the throttle blade is moving very slow because its movement is restricted by the throttle blade. The throttle blade is only slightly open 99% of the time the engine is running. The air behind the throttle blade (engine side) is moving fast and is very turbulent because the pressure is lower behind the throttle blade and is higher ahead of the throttle blade and the blade itself is creating turbulence. The whole concept of a throttle is to greatly reduce the amount of air entering the engine. There's virtually no turbulence in slow moving air. At 70 mph in OD the throttle blade is only slightly open. With a ram air intake, the air that is being packed into the intake almost has no place to go because the throttle blade is only slightly open, so therefore it has to be moving very slow because it has no place to go. Since the air is moving very slow, there is no turbulence. So what you're saying is slow air isn't moving fast?

[djb383]

I think that's what I said - several times.

[zionzr2]

Quote, originally posted by djb383 »I don't see how the intake tube surface really matters - tube diameter yes, but surface, no. Stop and think about - the air ahead of the throttle blade is moving very slow because its movement is restricted by the throttle blade. The throttle blade is only slightly open 99% of the time the engine is running. The air behind the throttle blade (engine side) is moving fast and is very turbulent because the pressure is lower behind the throttle blade and is higher ahead of the throttle blade and the blade itself is creating turbulence. The whole concept of a throttle is to greatly reduce the amount of air entering the engine. There's virtually no turbulence in slow moving air. At 70 mph in OD the throttle blade is only slightly open. With a ram air intake, the air that is being packed into the intake almost has no place to go because the throttle blade is only slightly open, so therefore it has to be moving very slow because it has no place to go. Since the air is moving very slow, there is no turbulence. so when you put your thumb over the end of the water hose, the water moves slower right??

[djb383]

Your absolutely right, the water inside the hose is moving slow, because your thumb is restricting the flow of the water inside the hose, just like the throttle blade restricts the flow of air inside your intake.

[mcgusto82]

a test is in order.run the engine. open the hood. play with the trottle body cable while putting your thumb or any finger disposable. see and feel at what rate the air is being sucked in.

[shane_c]

So is this blowing cooler air onto your short ram intake? Do you have a pic of the whole engine bay?

[GrayFox]

90% of the time the turbulance might not matter but do you think that would hinder WOT performance?Still a neat setup

[northvibe]

this tube just connects to his stock airbox, there already is a "snorkle" stock on our cars but its small and only in the fender, this i think would just improve having more cold air go into the stock box.

[djb383]

The tube I used is larger in diameter with less bends and replaces the factory tube. One end enters the airfilter box and the other end is in the small plastic grill piece nest to the drivers fog light. I'll take another pic and post it as the 4th pic is not working for some reason.By having the intake in the grille, you get the advantage of true ram air because that is where the high pressure air is at speed. Stick your hand out the window at 70 mph with your palm verticle. The pressure pushing on your hand is the same pressure in front of the grill at 70 mph and no hot, under hood air, even when stopped.

[ajflan]

Cool mod!

[djb383]

Pic #4 grille inlet.click to enlarge

[Mrizzle05]

you should paint or put a silver ring around it so it looks like its supposed to be there and you got a V12 in there!!! Looks good though.. nice mod

[Lancer]

Quote, originally posted by djb383 »I don't see how the intake tube surface really matters - tube diameter yes, but surface, no. Stop and think about - the air ahead of the throttle blade is moving very slow because its movement is restricted by the throttle blade. The throttle blade is only slightly open 99% of the time the engine is running. The air behind the throttle blade (engine side) is moving fast and is very turbulent because the pressure is lower behind the throttle blade and is higher ahead of the throttle blade and the blade itself is creating turbulence. The whole concept of a throttle is to greatly reduce the amount of air entering the engine. There's virtually no turbulence in slow moving air. At 70 mph in OD the throttle blade is only slightly open. With a ram air intake, the air that is being packed into the intake almost has no place to go because the throttle blade is only slightly open, so therefore it has to be moving very slow because it has no place to go. Since the air is moving very slow, there is no turbulence. Better get yourself a book on flow dynamics or something.

Attached files

[djb383]

Quote, originally posted by Lancer »Better get yourself a book on flow dynamics or something.Maybe you could loan me yours. Which part do you not understand? Is it where the air filter is located in the box and the direction the air flows through it?

[Katscan]

Quote, originally posted by Lancer »Better get yourself a book on flow dynamics or something.Not to seem rude but that was a bit uncalled for...if your going to post a reply like that then at least offer some constructive critisim. If you think he is wrong in what he said then tell us why Posts like that seem very flamitory.

[Sharpeye]

I did this mod over a year ago, and just put 5000 miles on my vibe going to Florida and back. The best mileage was 32mpg before, traveling 70-75mph. With the mod, I now get 34mpg at 70-75mph, and 30mpg at 80-85mph.The other benefit is my passing power increase, from 60mph I get a lot more pull when I floor it.I also used a 2 1/2 inch shopvac hose, but added a 3 inch galvanized elbow as a scoop.

[kevera]

It's cool and all,but seems kinda backyardish,nothing by the way of innovative.I did a setup like this when I was 16 on a 78' volare.Mostly used junkyard parts to create double intakes.For example this pichttp://img206.imageshack.us/my...8.jpgIt looks unfinished,not to put down what you did,it's a good idea,but you did all that work,so I would clean that up.For a few bucks more,I would spend on a cleaner setup CAI.

[djb383]

Show us what you have done.

[WaveAction]

i personally think it's a great idea..the last pic does look abit tacky..but hey..it works..i think it'd look better if you replaced the plastic part around the tube itself in the bumper with an actual grill and have that behind it so it's a lil less noticable

[djb383]

But it is the actual (original) grille.

[kevera]

Dude,I wasn't hating on you.I Think if your going to post something,you have to accept constructive criticism.I wouldn't do that to my vibe simply because there are better options available.By the way this is my setup.To me this is a way cleaner.Not into the duelin' banjo type setup

[GrayFox]

Quote, originally posted by kevera »To me this is a way cleaner.lol, looks pretty dirty to me j/k(sorry if I didn't say it someone else would have )djb, I think what RF2K means is have your tube mounted behind the grille so you don't have that hole there... I guess. But to do that you would have to move it to grilles mid-section.

[kevera]

LOL,I guess I set myself up for that one.The engine compartment is dirt from the slushy weather we have here.

[djb383]

Quote, originally posted by ANO_Vibe »lol, looks pretty dirty to me j/k(sorry if I didn't say it someone else would have )djb, I think what RF2K means is have your tube mounted behind the grille so you don't have that hole there... I guess. But to do that you would have to move it to grilles mid-section.At least he's been polishing his tube. The photo was taken from about 6". You never notice it from several feet away, just looking at the car. It's called pennytech, cheap and easy to do but functional, according to the Scangauge, and not intended to keep up with or impress the Jones' with bling bling.

[GrayFox]

Quote, originally posted by djb383 »At least he's been polishing his tube. woah! no comment there... haha

[kevera]

Quote, originally posted by djb383 »At least he's been polishing his tube. I do like to keep it polished.I know it's functional and you did do a great job-no doubt ,but the work you put into that,why not use something that is available to squeeze as much power as you can.Anyways we are getting off topic,I'm not into impressing anyone,just myself.WERD

[djb383]

Quote, originally posted by kevera »I do like to keep it polished.I know it's functional and you did do a great job-no doubt ,but the work you put into that,why not use something that is available to squeeze as much power as you can.Anyways we are getting off topic,I'm not into impressing anyone,just myself.WERD I did - "use something that is available to squeeze as much power as you can", I just didn't spend any money on it because a tube is a tube. Looks has little to do with function and a lot to do with marketing. Yours is very visible and mine is almost invisible and utilizes the effect of ram air, has better air filtration due to the OEM filter and has less heat absorption (plastic vs metal).Speaking of constructive criticism - what do the comments, "duelin' banjo type setup" and "kinda backyardish,nothing by the way of inovative", have to do with being constructive? And with regard to constructive criticism, sentence structure, punctuation and spelling need to be looked at.

[kevera]

Agreed.But your wrong with regards to the plastic not absorbing heat.The stock setup does filter more,but is more restrictive.Hence,the performance downside.So,I think you should do some more reading on performance upgrades.Then we can have this discussion again-agreed.

[Pablo1669]

Quote, originally posted by djb383 »I did - "use something that is available to squeeze as much power as you can", I just didn't spend any money on it because a tube is a tube. Looks has little to do with function and a lot to do with marketing. Yours is very visible and mine is almost invisible and utilizes the effect of ram air, has better air filtration due to the OEM filter and has less heat absorption (plastic vs metal). after spending a good amount of time working with the air inductions group at GM, I can tell you that this is the most inaccurate statement ever. As a Mechanical Engineer who's been through classes (fluid dynamics) somewhat recently that specifically teach you air flow properties, this is just freakin hilarious.What do you think car manufacturers put flow straighteners in the air intake tubes for? Tell me how GM's vortec engines work dude. You probably have no idea, so I'll say it simply. They spin the air that goes into the engine so it mixes better with the gas. OF COURSE it matters how the air gets to the throttle body, whether or not you think that it doesn't. If the air doesn't need to flow there fast enough, why would car companies make things like Ram Air? They don't do it for the cold air, they do it for the fact that the air is being forced harder into the engine. Do you know how what happens when you step on your gas pedal? It doesn't push the gas into your engine. The gas pedal opens the butterfly valve on your throttle controlling how much air is put into your engine, and the MAF tells your car how much fuel it needs according to how fast (and how much) the air is getting into your engine. Tell me again how the tubing won't make a difference? Everything I've read in here is painfully wrong and it hurts to read it. You better believe that the smoothness of the tube makes a difference. Why else would people smooth out the inside of their throttle body?

[djb383]

You totally missed the whole point. And with regard to ram air, I believe that is what I accomplished, to a degree anyway. Look at all the money GM could have saved on engineering costs by just straighting and then spinning (there's a contradiction) the air with a Tornado bought off of Ebay.

[millster]

I think everyone needs to just cool it.Things are getting WAY too close to personal attacks here (or right on it in some cases) and this is where it stops!Please discuss constructively or say nothing at all.

[djb383]

Thank you, my point exactly.