Short ram Question - CEG Archives

Originally posted by D Davis:
Eh, hold on. Let me clarify a couple things.

I have never measured 0-60 in my car - whether it be before or after the Street Flight CAI. I have never claimed an increase in anything other than horsepower.

Now, I did see an 11 HP increase, but you have to take something into consideration. I didn't baseline my car with a truly stock intake. I had already hacked up my intake (removed the resonator, pulled the junk from the fenderwell and enlarged the air inlet hole) before I ever heard of Street Flight.

My "baseline" dyno with my former setup netted 111 HP and 118 TQ. After the CAI it put down 122 HP and 125 TQ. It isn't all at peak, either. I think a stock Zetec will put down between 100 & 105 HP.

I've shown the dyno graphs before, but I'll put them up again for speculation.

...and tourman, the reason the gains are as good as they are is because a lot of math went into getting the length X inner diameter correct.

EDIT: Before anyone tries to be coy, both of those runs are with no performance mods other than intake. The exhaust wasn't on yet, the FPR wasn't on yet, the TB wasn't optimized yet, etc. I put the CAI on my car, I made about 20 HP over stock...

What was your previous setup?

Originally posted by D Davis:
I had already hacked up my stock intake (removed the resonator, pulled the junk from the fenderwell and enlarged the air inlet hole) before I ever heard of Street Flight.

I don't think there's any way that a big pipe on the intake, no matter how weird, could cost you that much power, at the low end or at any end. Something is wrong. My first guess would be unmetered air getting around the maf, or perhaps a vacuum leak. Maybe the MAF is contaminated with gunk. Or maybe birds have made a nest inside that pipe.

Originally posted by D Davis:
the reason the gains are as good as they are is because a lot of math went into getting the length X inner diameter correct.

That's the hard part (one of them anyway) about designing a truely effective intake.
I'm getting closer though!

Hey guys, i have been thinking...do you think my car was giving me problems because it couldn't push out all the extra air fast enough...thats why it only started working when my RPM's got higher? like for instance if i had my resonator removed or something...that might help my engine suck as it blows....(get your minds out of the gutter

) What do you guys think?

freeing u'r exhaust up some will definitely help. maybe not a whole lot, but it'll help some. if i was me and could go back in time in a large time traveling device involving electromagnetic gyroscopes, then i would have just cut off my muffler and left the resonator until i could afford a real exhaust, which i will be affording in a few months.

You know whats funny about my situation....I put my stock air assembly back on and immediately, my low end is back and my car runs so smooth....What the hell is that supposed to mean?

Thats not normal is it? I am afraid to get the CTA because this problem may occur again...Thats 150 bucks down the toilet....I am lost...My car doesn't like mods...that sucks..stupid thing

Originally posted by tourman113:
You know whats funny about my situation....I put my stock air assembly back on and immediately, my low end is back and my car runs so smooth....What the hell is that supposed to mean? Thats not normal is it? I am afraid to get the CTA because this problem may occur again...Thats 150 bucks down the toilet....I am lost...My car doesn't like mods...that sucks..stupid thing

Tourman...gut it the way I described in the PM I sent you

CTA will lose a little low end compared to say any modded intake other than stock, but the mid to high end is better than anything else available, and if installed correctly, the car will run fine.

Low end is what i want most? Isn't that the most important part in a race is the start? Races only last about 10 seconds. I always thought an intake would help low end more than top end....Yeah D i did gut it the way you told me to. It was cool but i still had a huge loss of low end. Maybe i should do like Sleeper said and use 2.5"pipeing instead. I am just afraid i would lose top end if i did that(damn i am picky

)...What do you think?

The only way you are goin to gain the low end is if you do your exhaust. Intake changes will more than likely only change your mid/upper rpm range, unless you are doing more than intake piping...

I guess its inevitable....i must do my exhaust first.....i gotta wait till i get some more$$$$$$...I am in college if you know how that goes. I want something that doesn't sound like angry bee's or any other type of small angry animal(not directed towards you hector

, i like your car). Got any suggestions...I can't believe i don't know what i am going to do for exhaust yet..its been talked about so much. If i was going to do duels(strictly for the look)how would i arrange the piping so that i would keep the sound quality of whatever resonator i choose,magnaflow,dynomax,flowmaster? I want 3" tips...what do you think...If i get duels will everyone flame me and tell me its "rice"

So i guess intakes hurt low end slightly but if i get my exhaust done it will fix my low end? I hope so...thanks guys I have pics of my intake if anyone wants to see them.....I would actually like someone to host them for me...Then everyone could see it. Thanks again everyone.

Yes, I have a focus ZX3 as well, and the Borla exhaust I got for it just made good power on the bottom end and silly crazy pulling power on the mid/upper range, and the intake that I put on it just helpe add to the mid/upper range, and I didnt notice any slack on my lower end, so I am guessing the exhaust would do the same on your tour zetec.

If I were you, I would more than likely get the Brullen exhaust that is goin on. And for the quasi-dual setup you are talking about, it would be totally for looks, and nothing for performance, however if you do, I would ask to get it just like the SVT routes it and get the extra hanger and put it on the passenger side at the same location as the SVTs...

Ok, i was thinking about some kind of custom job but i guess i could get a used SVT exhaust and replace the resonators with magnaflow or something..then i will just have the guy at the shop put tips on it for me...If I do go the SVT route...would it be best to take the rear mufflers off and replace them with something else? I have so many questions, sorry if i am talking your heads off, i am just excited because i may have solved my intake problem. I really do like the Brullen system..I was thinking of getting it but i am very short on money..I won't have it in enough time to get in on the group buy so i will just get it from Performance fords. I'll get the quiet system with 3" tips. Oh, i love the way their tips look too.

Loose low end, gain mid range power. That is why you rev it up a little when drag racing.

Anyone wanna host some pics for me....That is if you wanna see my intake.

Originally posted by tourman113:
Anyone wanna host some pics for me....That is if you wanna see my intake.

email them to:

bborges79@hotmail.com

Compress them to 30% - 40% Jpeg.

It is a hotmail account. Max 1Mg.

I'll post them to you. Create an album I mean, I cannot directly post pictures.

Jims' Intake:

http://www.pbase.com/ics/intake

Wanna see more Intakes ??

Here is mine:

http://www.pbase.com/bborges/zetec_cta

What do you guys think? I don't tkink it turned out to be too ugly concidering it was an experimental sort of thing. I really love the way the CTA looks though....its so....shiny

Before anyone asks, i will tell everyone what that little knob is doing there before the MAF. I used the stock peice of intake tube that housed the IAT sensor. I just cut the paddle shaped resonator off and capped it off....literally with a cap...from leather treatment spray...it snapped on top of the hole like it was meant to be there so i just epoxy'd the damn thing and painted it. The pipe is was too hard to drill into...(anyone tried cutting 300 aluminized steel with a hack saw

) my blisters tell the story quite well. Any comments are welcome good or bad. I have never been flamed before so i am interested in what people will say.

looks good broman!

thanks man...hey didn't you say that you were making one too? Hurry up and get some pics so i can steal your design

Just kidding man, i am just curious to see how 2.5" piping works out...You could be right about it, i would definately like to find out for sure.

ummmm, i guess no one liked it....Oh well back to the drawing board

Thanks for the comment sleeper. If this was for sale, how much do you think someone would pay for it? Minus the little Cap thing sticking out in front of the MAF. Just curious...I may begin making these for people who want a custom intake, if the price is good for both me and the buyer....You can contact lsneo also because he is my partner in crime

Our web site is coming along quite well. Anyone interested?

I like it. Looks good

Looks good.
Better than how my first ram air intake looked.

Here is mine.. 3" piping...

Hey, I really like that..Its nice and shiny. How did it sound...That little accordian thing right before the throttle body is interesting...Where did you get that 90 degree bend from? Wow, It looks really good

I like that intake also. Is that an open hole just after the MAF?

I was thinking the same thing...although he may have just put something in there to close it up.

Yeah, that is where my IAT sensor went. I just didnt have it in when I took that picture. But that accordian thing was taken out when I relocated the crankcase filter, and replaced with a silicone connector, so the two metal pipings touch and dont interfere with flow.

That intake is loud as shizzles on the contour zetec!!! OMG, I am soo in love with that thing on my car...

still makes me wanna drool. And the throttle response is unbelieveable! very good make, if I dont say so myself..

It looks fantastic, smoothy! Nice work on the custom intakes, ya'll.

The only thing...The ONLY thing I would change about your set up is the cap thingy on the IAT tube. Smooth that out too. What I did on mine was to smooth the tube down and then put a rubber piping coupler from Lowes or somewhere on it...You may be running into a small prob where the air hits that area and gets restricted slightly. Intakes need to be as smooth as you can get them. That intake that you have is dead on! Good work!

You said you ceram coated it...How many layers of paint did you use? One? Two? I would put a few layers on to make sure that the paint does what it is intended to do.

I like the post that someone put about the varying of the tube sizes from large to small. That is how mine is and it seems....seems to produce good results. But if you do think about it, it does make sense and I have thought this for a while...take the anology of water in a hose. Put a cool turnable nozzle on it. Turn the water up and leave it alone, open the nozzle some and note the pressure. Keep going until you go to that fanning thing that they do...see, even though the water was at a certain velocity, you made it flow faster by adding compression and squeezing it out of the nozzle...got boost? Now again, it is just a theory of mine but hey. And again, I wouldn't say that this was as good as a turbo or SC but hey it makes sense. So for me, when I redesign mine, I will start with 3 inch because that is what the MAF opening and the IAT tube openings are, down to 2.5 to the TB which maybe around 2 and a nice 90 degree SLAM into the TB!!!!

Mine is probably the most ghetto of the ghetto intakes right now LOL! The reason, I reused some of the stuff like the accordian tube...which I busted a band clamp on tonite after replacing a second MAF in a AutoZone Parking Lot! WooHoo...so much for done in 15 minutes.

Time to rebuild....

L8R
Rich

sounds pretty good. But remember... water has different properties and flows than air!

For the purpose of air flow, fluid dynamics can be used.
So when designing an intake, air flow has the same properties as water flow. Differences begin to appear between the two when pressure and temperature are added into the mix. Since a T/C or S/C is not being considered in the design then pressure has no real bearing on the design. So the major design concern is about having the coolest possible air flow intow the intake. The time and effort involved in tuning the intake (without tuning the exhaust as well) just doesn't have enough gains to worry about.

remember with RamAir... every 100mph worth of forced air= 1psi....

Originally posted by smoothy:
remember with RamAir... every 100mph worth of forced air= 1psi....

Actually, I think you get 1 PSI at 100 MPH, and 4 PSI at 200 MPH... and 1/4 PSI at 50 MPH. Proportional to the square of the speed. So if you want 30 PSI, you only have to go about 550 MPH, not 3000 MPH.

yes how true... yet another post i fudged up cause of wording!