How to install the Civic Intake tube - TCCoA Forums
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post #1 of 58 (permalink) Old 08-26-2004, 01:50 AM Thread Starter
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Post How to install the Civic Intake tube

Well first off im gonna say that soooo many people have been asking me about this i decided to start a thread on it and hope it helps everyone out. I dont mind being asked questions and i feel great helping people out but we all know a picture is worth a thousand words...so here we go

attention: this modification will only work on 1994-1995 V8 mn12's!!
________________________________________

Tools and Parts Needed:
-Civic Intake tube 1992-00 made my Spectre ($40)
-Breather Element ($10)
-Extra 3" Hose clamps *just in case u [email protected]$% up* ($3)
-Flat Head Screwdriver *to tighten up hose clamps*
-Some Bandaids and tylenol if you are a noob like me

1) Start by Unplugging the MAF sensor and the other sensor that attaches to the air box. ANYTIME while working with the intake you should unplug the sensors. Takethe violin case out *plastic part that says 4.6L SOHC* by unclamping it from the MAF tube and the Throttle body. Put it aside and save it, you never know when you might need it again.


2) Take the Civic tube and saw off the little metal plug that sticks out on the civic tube. You can also take that little rubber plug out as you dont need it and you might as well take it out *shown in the blue arrow*. To seal up the holes you can use some alluminum tape to wrap it up as it can take support the heat. I used electric tape and have had it on for about a month now and see no damage or wear so far. Also move the rubber sleeve that comes on the civic tube down to where that metal prong is. It must be that short for the tube to connect correctly.

pic taken from shadowdragons site mn12tbird.com

3) Attach the civic tube to the adapter thats on the TB *throttle body* with a 3" hose clamp (yellow arrow) and then clamp down the OEM clamp that is on the TB adapter to the TB (purple arrow). Make sure it is tight and is angled as downwards towards the airbox as possible. The fuel rails are in the way for it to be angled but try as hard as you can. This is where the band aid comes in handy j/k




4) Unclip the airbox and attach the Rubber tube after the MAF to the end of the civic tube with another 3" hose clamp (Green Arrow). If you want to clear more hood space you can rip out the padding that underlines the hood, or you can oval out the part of the tube that the yellow arrow is pointing at. *Keep the top of the airbox attached to the MAF when you do this*



5) Now stretch the airbox lid all the way down to the bottom part of the airbox. The OEM tube inbetween the MAF and the civic tube can stretch pretty dam far but wont stretch out that far at first seeing how its been in that position for quite some time in your car. You wouldnt want to stretch out either if you were chillin in that angle for about 9-10 years haha. Line up the inserts that attach to the bottom part of the aixbox. And then clip down the metal clips to the aixbox and make sure its secure (Yellow arrow)



6) Attach the Breather element over the plastic prong that sticks out on the drivers side Valve cover. If it doesnt fit then pop out the rubber part thats inside the lil breather element then turn it upside down and stick it back in the lil breather element (Lime Arrow). *i found out if you turn it upside down that it gives you a lil more clearance to fit on that prong..shove it right down on it and clamp it down as well, the breather element should come with a small clamp*


7) Plug back in the MAF and the other sensor that attaches to the airbox and let it reset. Let the car run and get used to the new intake. I didnt let it warm up enough that when i drove it around it was missin shifts and everything was kinda off. Then a couple of minutes later...DAMMMMM...you'll love it. Increases air flow from 1.75in to about 3in along with increased intake noise. A great combination with the air silencer removed. ***NOTE: Make sure that everything is clamped down securely and is safe for go***
8) Kick back and have some beer, or get some apple juice in a mug and drink it outside like it was a beer Here are some pics of the whole intake...



..and a pic of what it looks finished


And of course if you mess anything up i wont be held resposible and i will not be responsible for any damage you do to your car or intake beacuse you messed it up.
...But i will help out with any questions jus email me @ [email protected] or instant messege me on AIM or AOL @ Domesticbird29

sorry for making you guys read alot

Last edited by Porkchop; 10-09-2005 at 08:53 PM.
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post #2 of 58 (permalink) Old 08-26-2004, 01:59 AM
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Great idea, porkchops, thanks. I would also like to see details of the use of a '96 intake elbow to connect the PCV hose.

I come from a dusty place.
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post #3 of 58 (permalink) Old 08-26-2004, 02:02 AM Thread Starter
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Quote:
Originally posted by 4point6r0x0rz
Great idea, porkchops, thanks. I would also like to see details of the use of a '96 intake elbow to connect the PCV hose.
http://www.mn12tbird.com/mods/cintake/index.html

thats shadowdragons tech write up...you can see that he cut a piece from the 96+ intake and used it

hope that helps

_________________________
95' V8 LX
-Removed air silencer
-Custom Cold air Intake
-Custom *Chrome* Civic Tube Upper intake
-High flow cats
-Dual Flowmaster Exhast
-2.5in piping from headers to the back tips
-K&N Panel Air Filter
-245/60/15 yoko tires
-Scott's *Custom* Gauges
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post #4 of 58 (permalink) Old 08-26-2004, 02:11 AM
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Quote:
Originally posted by porkchop2oo2
http://www.mn12tbird.com/mods/cintake/index.html

thats shadowdragons tech write up...you can see that he cut a piece from the 96+ intake and used it

hope that helps
Yes, it helped me purchase a '96 intake tube for $25, but when I checked it out over the weekend, my PCV hose was too small to fit either connection on the '96 tube. I just put it aside in storage for now.

I come from a dusty place.
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post #5 of 58 (permalink) Old 08-26-2004, 12:58 PM Thread Starter
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Quote:
Yes, it helped me purchase a '96 intake tube for $25, but when I checked it out over the weekend, my PCV hose was too small to fit either connection on the '96 tube. I just put it aside in storage for now.
you also need the PCV from the 96 for it to work on the 96 intake...and you need the 95 PCV hose to fit on the 95 intake....get the 96 hose and youll be fine...or go to an auto store and tak the intake with you and ask for help and they might find a universal adapter of some sort...u never know


_________________________
95' V8 LX
-Removed air silencer
-Custom Cold air Intake
-Custom *Chrome* Civic Tube Upper intake
-High flow cats
-Dual Flowmaster Exhast
-2.5in piping from headers to the back tips
-K&N Panel Air Filter
-245/60/15 yoko tires
-Scott's *Custom*
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post #6 of 58 (permalink) Old 08-26-2004, 10:32 PM Thread Starter
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this setup is with the stock intake for the 94-95...if you dont like to stretch the tubing then use a chunk from the 96 intake...any tips with 96 intake let me know?
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post #7 of 58 (permalink) Old 08-27-2004, 07:15 PM
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Quote:
Originally posted by porkchop2oo2
you also need the PCV from the 96 for it to work on the 96 intake...and you need the 95 PCV hose to fit on the 95 intake....get the 96 hose and youll be fine...
I can't tell by the pic where to cut the '96 intake exactly. SD, if you read this can you chime in? It looks like SD flipped it upside down, and cut the middle section of the '96 and used the other connection, not the PCV connection, is that right? If so, then what is that boot that was used to connect the hose from the valve cover to the cut '96 intake tube? The PCV hose I picked up today fits directly into the '96 intake tube without a rubber boot, but I don't know how things would line up at the right angle.[quote]
Quote:
or go to an auto store and tak the intake with you and ask for help and they might find a universal adapter of some sort...u never know
I might try that if I can't figure this '96 thing out. Thanks.

I come from a dusty place.
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post #8 of 58 (permalink) Old 08-28-2004, 01:29 AM Thread Starter
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the stock intake tubing will stretch dont worry about it...it jus seems tight at first because its been in that kinda angle for 9-10 years now...now when i take it apart it stays at that length and doesnt give me problems anymore...

on the 96 intake i dont know where to cut or splice but i do think that SD got extra tubing and jus slid the cut 96 peice over it....hope he chimes in or i figure something out...
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post #9 of 58 (permalink) Old 08-28-2004, 01:49 AM
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Porkchop, nice writeup. The only thing I would point out is the hose clamp with the green arrow to it shouldn't be on top as that's just one more thing to rub. Personally I always put the clamps on the bottom if possible because it's cleaner, but at least move it to the side to give you a bit more clearance.

Okay let me see if I can remember exactly how I did this. I used the hardline from the violin case. There was a rubber elbow and another short hard plastic piece that fit the elbow to the intake tube. I'm pretty sure I got the rubber elbow and the hard pass-through piece from the Violin case (from how it connects to the case) as the tube doesn't come with them. It might also be from the piece coming from the head

What you will end up with is short hard tube plugging into intake tube, rubber elbow plugging on other side, then the hardline back to the head.

The cut I made was right in the middle of the two connections on the 96 tube.

However! I now have a better way of doing it, when I broke that hardline changing fuel injectors. Get some heater hose and a 90* plastic elbow for the PCV (the exact same thing that's already in the head). You can pick these up at the PCV section of any autoparts store. Connect the hose to the Elbow coming out of the drivers head and the other end to your purchased elbow, then into the tube.

Note this shows the GT tube, but can also work with your 96-97 tube.

If you have a good drill you can use this same idea and buy a PCV elbow and a grommet, drill a hole into the metal tube just big enough for the grommet and the PCV elbow to fit tightly in there, you don't want air escaping.

I would definately not reccomend using a breather filter on just one head if you get any hot weather or are close to detonation because you will get more by letting unmetered air into the system. I ran it like that for a short time, and as soon as it started getting hot out the detonation started.

R.I.P. Joel Bender 07/30/79 - 03/26/06
R.I.P. Johnny Langton 1975-2011

1997 Thunderbird LX 4.6 AED 349.27RWHP/391.29RWTQ Engine Build Exterior shots
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Last edited by ShadowDragon; 08-28-2004 at 02:02 AM.
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post #10 of 58 (permalink) Old 08-28-2004, 03:24 AM Thread Starter
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what do you mean by detonation...

my car runs great hot or cold...and the breather element doesnt take as much air in as much as everyone thinks it does...it jus needs some air for the engine to detonate..if the engine needed more air then they wouldnt have made that hole that small...the tb needs lots of air, not the valve cover...the lil breather element is fine over where it is now imo...
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post #11 of 58 (permalink) Old 08-28-2004, 05:48 AM
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Thanks for the details, SD. I might go with your last method. Where did you get your heater hose amd 90° PCV part Autozone? And is there a particular size that fits perfectly? Did you just have some heater hose cut for you and then put on steel braiding extra or is that how it really comes over the counter?

I come from a dusty place.
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post #12 of 58 (permalink) Old 08-28-2004, 12:55 PM
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When you floor it and it sounds like gravel running through the engine, that's detonation.

I picked up the stuff at PepBoys, the heater hose I just picked up a package of like 5 feet and had the braiding stuff at home so added it just because. Take the hard plastic tube in with you and get an elbow the same size. Don't forget the small hoseclamps as well to make sure everything is nice and leak free.

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post #13 of 58 (permalink) Old 08-28-2004, 05:09 PM Thread Starter
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Quote:
When you floor it and it sounds like gravel running through the engine, that's detonation.
never had that happen to my car....hmmm
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post #14 of 58 (permalink) Old 08-28-2004, 05:12 PM
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Keep in mind the stock tune is pig rich.

R.I.P. Joel Bender 07/30/79 - 03/26/06
R.I.P. Johnny Langton 1975-2011

1997 Thunderbird LX 4.6 AED 349.27RWHP/391.29RWTQ Engine Build Exterior shots
2002 Thunderbird Premium Triple Black 3.9
2015 Fusion Energi SE Luxury Magnetic Gray
*SCRAPPED* 1994 LX 4.6 NA [email protected] 236.07RWHP/286.26RWTQ
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post #15 of 58 (permalink) Old 08-28-2004, 05:18 PM Thread Starter
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still one of the best things to do if you engine is still kinda stock and its not going anywhere past 30hp...as soon as a couple of more things are done then i will get my dream car and use it as a daily driver while i play with my bird
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post #16 of 58 (permalink) Old 08-28-2004, 05:20 PM
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Oh yeah, the 94-95's definately need something other than the violin case.

R.I.P. Joel Bender 07/30/79 - 03/26/06
R.I.P. Johnny Langton 1975-2011

1997 Thunderbird LX 4.6 AED 349.27RWHP/391.29RWTQ Engine Build Exterior shots
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post #17 of 58 (permalink) Old 08-28-2004, 10:07 PM Thread Starter
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its funny how much ford restricts our cars...

the air silencer that everyone removes is MADE IN CANADA!!

HAHAH WTF IS UP WITH THAT?!

and the violin case in the middle goes to about 1.5 inches wide...um.....NOOOO
thats why you gotta love this cheap mod for like 40$ and is 3..YES 3 inches wide!
thats twice as much air flow compared to that region of the violin case

that and the 4in wide intake i fabricated makes for a nice intake setup...
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post #18 of 58 (permalink) Old 09-01-2004, 04:28 AM Thread Starter
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i want to custom fabricate a 3in tube from the fender hole where the cone filter will sit ALL the way back to the TB....ill have a seperator plate where the airbox is with the cone filter hanging where the silencer used to be and it will connect to the MAF and ill have a plug to plug the MAF sensor and that other sensor...then the MAF to the TB with another plug so that can plug to the valve covef on the drivers side of the engine so i dont have to use a breather element...designin it will be a bizatch but i know my local muffler shop is up to the task

one question tho...what kinda of metal is the civic tube made out of?....steel?...chrome plated?....silver plated?...nickel?....someone chime in hehe
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post #19 of 58 (permalink) Old 09-01-2004, 07:41 AM
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Most of them are polished aluminum. Make sure you get a thin cone so you don't squish it. Or you could get a cowl ood.

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R.I.P. Johnny Langton 1975-2011

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post #20 of 58 (permalink) Old 09-01-2004, 08:24 AM
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About the detonation thing. I'm running into that right now, since I got my chip, when it is really hot outside(above 95 degrees) I'll get some slight pinging, which could be exactly what SD was talking about, since I'm running a filter there. Which is why I'm looking into other options to make it easier to put the tube back on.
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post #21 of 58 (permalink) Old 09-01-2004, 11:48 AM Thread Starter
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Quote:
Originally posted by ShadowDragon
Most of them are polished aluminum. Make sure you get a thin cone so you don't squish it. Or you could get a cowl ood.
what do u mean by thin cone?.....the filter in the fender?...should i have the cone angled down or facin the openin splash gaurds?
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post #22 of 58 (permalink) Old 09-01-2004, 12:03 PM
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Nevermind, I was barely awake this morning and thought you wanted to stick your filter itself "All the way back at the throttle body".

You might have gotten a different tube than the rest of us depending on where you bought it. The ones in the parts stores I've seen are all just polished aluminum. Try to stick a magnet to it, see what happens.

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Mine was different than that one, it didn't have the nipple that stuck out, it just had a thick rubber plug there.
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post #24 of 58 (permalink) Old 09-01-2004, 11:08 PM Thread Starter
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what brand did u guy?
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post #25 of 58 (permalink) Old 09-02-2004, 04:22 PM
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anyone got a solution to this detonation? can you just put a breather on the other valve head too? I want to do this mod now that i see how cheap and easy it is but not if my car is going to detonate.

Just realized there's only a breather on one head. What are we to do? with the old style intake there's no way to cut off a piece and clamp it onto the civic intake.

'95 Thunderbird 4.6L V8

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post #26 of 58 (permalink) Old 09-02-2004, 08:03 PM
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anyway i can drill a hole in the civic tube and just somehow seal the tube in?

'95 Thunderbird 4.6L V8
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post #27 of 58 (permalink) Old 09-02-2004, 11:07 PM Thread Starter
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yea that could be done....u could drill a hole and get a plug to instal in that same hole and seal it off somehow...then plug that plus into the valve cover over the drivers side...

i got an idea....saw off that plug that is on the civic tube...then seal off the hole with alluminum tape or high temp tape then drill a hole in the civic tube somewhere that HAS clearance and take the tube with that old nipple and take it to a muffler shop and ask them to weld the nipple in the drilled hole...just a thought...

i dont think that the tube that comes with the civic tube would fit over our valve cover
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post #28 of 58 (permalink) Old 09-07-2004, 03:24 PM
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sorry to bring this thread back. I just had a couple more questions. where do i order the tube and does anyone else have an opinion on drilling and sealing the head breather into the tube? also, with a stock tune am i going to run into any problems with just the breather element?

'95 Thunderbird 4.6L V8
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post #29 of 58 (permalink) Old 09-07-2004, 03:28 PM
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Go to Autozone/Pepboys/Advance Auto, hit the rice section and get your tube, hit the hose section and pick up some heater hose and a couple hose clamps, swing by the PCV section and get a rubber grommet and plastic elbow that just barely fits through the grommet and go home, drill a hole, put the grommet in and add the elbow and put the hose between the two. Make sure the elbow is a tight fit into the grommet.

It's still not a good idea, but with the overrich mixture a stock tune won't run into detonation.

R.I.P. Joel Bender 07/30/79 - 03/26/06
R.I.P. Johnny Langton 1975-2011

1997 Thunderbird LX 4.6 AED 349.27RWHP/391.29RWTQ Engine Build Exterior shots
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2015 Fusion Energi SE Luxury Magnetic Gray
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post #30 of 58 (permalink) Old 09-07-2004, 07:03 PM
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Quote:
Originally posted by ShadowDragon

It's still not a good idea, but with the overrich mixture a stock tune won't run into detonation.
care to elaborate why? the air is metered now isn't it?

second, i called autozone and he said he could order it if i wanted it but he doesn't sell parts by spectre.

'95 Thunderbird 4.6L V8
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