Installed 4.0L TB, 62mm Spacer, High Flow Intake, and bored out intake manifold... - JeepForum.com
Search  
Sign Up   Today's Posts
User: Pass: Remember?
Advertise Here
Jeep Home Jeep Forum Jeep Classifieds Jeep Registry JeepSpace Jeep Reviews Jeep Gallery Jeep Clubs Jeep Groups Jeep Videos Jeep Events Jeep Articles
Go Back JeepForum.com > Models > Jeep Wrangler Forums > YJ Wrangler Technical Forum > Installed 4.0L TB, 62mm Spacer, High Flow Intake, and bored out intake manifold...

FS: Wrangler RGB Multicolor Fog Light LEDs: Awesome EffectThanksgiving holiday sale in effect @ oconeeoffroad.comRugged Ridge 8500lb Winch w/ Steel Cable $294.99 Shipped O

Reply
Unread 04-25-2005, 01:58 PM   #1
micfly83
Registered User
 
Join Date: Nov 2004
Posts: 317
Installed 4.0L TB, 62mm Spacer, High Flow Intake, and bored out intake manifold...

Hey everyone, I thought I'd share how my intake mods that I did turned out. I installed a 4.0L Throttle Body, 62mm TB Spacer, High Flow Intake, and bored out the intake manifold to match the opening of the spacer. The whole install took about 3 hours, which includes removing all the old stuff too.

Overrall the Jeep seems to drive much better now. The engine runs smoother and sounds like a nice powerful motor thanks to the new high flow intake. It seems to have more power throughout all speeds and maintaining highway momentum has become less of a chore. After installing the spacer my throttle cable was raised up some and made the gas pedal stiffer (for whatever reason). This solved the problem of my touchy gas pedal from before when I would start to buck because I couldn't keep my foot steady (offroad advantage). I also noticed that my gas mileage is starting to improve somewhat, which is even more of a surprise to me because I'm driving like a madman to "test" the new mods. If I mash the gas to the floor the Jeep takes off and has some nice power. On the way to work I was able to get it it up to 75mph + and still had more throttle to work with, but I did have a 15mph tailwind from behind. Coming home from work the Jeep did start to bog down some and I was only able to maintain about 57 with the gas to the floor (the winds were about 18mph gusting to 25mph with the top down, so I wasn't too upset).

All in all I think the install was definitely worth it. With the throttle opened all the way up the Jeep has plenty of power for a daily commute to school and back. The install only cost $130, which includes the tack cloths and dremmel bits. The TB was $35, The spacer was $32, and the intake was only $50.

On a side note; I do not have a high flow exhuast at all, which could be restricting even more power gains. If I find a good deal on a flowmaster or something I may throw that on just to make it complete, but for now its great. I also don't think its a magical cheap solution to run 33s on a 4 banger as a DD. I know some people do it, but the power increase was not significant enough to pull along that much tire. I think regearing to 4.88 is your only real solution to bringing back power.

Happy Jeepin





__________________
1994 Jeep Wrangler YJ, 2.5L High Output, High flow aluminum intake, 4.0L Throttle Body, 62mm TB Spacer, bored out intake manifold, 5spd, 3" suspension lift, 31" BFG A/Ts, Two 10,000lb tow hooks, DT3000s, Outland lightbar, 5 high powered offroad lights, Mapp Nerf Bars, 102" whip antenna, Midland CB, 6 speaker soundbar, Smallest leaf removed, Air restrictor removed, No trackbars, No swaybars, No A/C, Custom 32 song horn-


http://www.cardomain.com/memberpage/753987
micfly83 is offline   Reply With Quote Quick reply to this message
Unread 04-25-2005, 03:07 PM   #2
EABiker
Registered User
1989 YJ Wrangler 
 
Join Date: Dec 2004
Location: Frederick, MD
Posts: 1,680
You didn't bore that thing out while it was installed on the motor did you? All those aluminum shavings in the intake can potentially cause you to have a bad day!

E
EABiker is offline   Reply With Quote Quick reply to this message
Unread 04-25-2005, 03:19 PM   #3
micfly83
Registered User
 
Join Date: Nov 2004
Posts: 317
Quote:
Originally Posted by EABiker
You didn't bore that thing out while it was installed on the motor did you? All those aluminum shavings in the intake can potentially cause you to have a bad day!

E
I stuffed it with about 5 tack cloths (one for each split and one in the middle) and thoroughly vaccumed it with a shop vac. Worked out fine and theres been no probelms since.
__________________
1994 Jeep Wrangler YJ, 2.5L High Output, High flow aluminum intake, 4.0L Throttle Body, 62mm TB Spacer, bored out intake manifold, 5spd, 3" suspension lift, 31" BFG A/Ts, Two 10,000lb tow hooks, DT3000s, Outland lightbar, 5 high powered offroad lights, Mapp Nerf Bars, 102" whip antenna, Midland CB, 6 speaker soundbar, Smallest leaf removed, Air restrictor removed, No trackbars, No swaybars, No A/C, Custom 32 song horn-


http://www.cardomain.com/memberpage/753987
micfly83 is offline   Reply With Quote Quick reply to this message
Unread 04-25-2005, 03:57 PM   #4
Shinner
Registered User
1992 YJ Wrangler 
 
Join Date: Jul 2003
Location: Central PA.
Posts: 1,270
Quote:
Originally Posted by micfly83
The TB was $35, The spacer was $32, and the intake was only $50.
Where'd ya get the intake? Homebrew?
__________________
His : 1992 YJ (Almighty 4 banger)
Hers: 2004 WJ Columbia Edition (4.7HO)

Black Jeep Society - Black Jeep Club V2.0 #37 - Merry Wacko Jeep Club #37 - Metalhead Jeep Club #37 - 2.5L Low Output Jeep Club #37
Shinner is offline   Reply With Quote Quick reply to this message
Unread 04-25-2005, 04:16 PM   #5
micfly83
Registered User
 
Join Date: Nov 2004
Posts: 317
I was considering a homemade intake, but I figured I'd get somethin a little better for the same amount of money off ebay. Ebay is great for performance parts. Just search for "Jeep Intake" or "4.0L Throttle Body Spacer". I'm sure you'll find what you are lookin for, for an excellent price.

The intake is great. It was only $30 I believe and $20 shipping. It sounds cool and it really helps the new throttle body get air faster. The only thing I'm worried about is getting water inside of it...I need to make some kind of splash guard or somethin.
__________________
1994 Jeep Wrangler YJ, 2.5L High Output, High flow aluminum intake, 4.0L Throttle Body, 62mm TB Spacer, bored out intake manifold, 5spd, 3" suspension lift, 31" BFG A/Ts, Two 10,000lb tow hooks, DT3000s, Outland lightbar, 5 high powered offroad lights, Mapp Nerf Bars, 102" whip antenna, Midland CB, 6 speaker soundbar, Smallest leaf removed, Air restrictor removed, No trackbars, No swaybars, No A/C, Custom 32 song horn-


http://www.cardomain.com/memberpage/753987
micfly83 is offline   Reply With Quote Quick reply to this message
Unread 04-25-2005, 04:49 PM   #6
Shinner
Registered User
1992 YJ Wrangler 
 
Join Date: Jul 2003
Location: Central PA.
Posts: 1,270
Quote:
Originally Posted by micfly83
Ebay is great for performance parts. Just search for "Jeep Intake" or "4.0L Throttle Body Spacer". I'm sure you'll find what you are lookin for, for an excellent price.
Gonna check it out...any chance you remember the seller's ID you bought from?
__________________
His : 1992 YJ (Almighty 4 banger)
Hers: 2004 WJ Columbia Edition (4.7HO)

Black Jeep Society - Black Jeep Club V2.0 #37 - Merry Wacko Jeep Club #37 - Metalhead Jeep Club #37 - 2.5L Low Output Jeep Club #37
Shinner is offline   Reply With Quote Quick reply to this message
Unread 04-25-2005, 05:01 PM   #7
micfly83
Registered User
 
Join Date: Nov 2004
Posts: 317
There were basically two intakes i had to choose from

http://cgi.ebay.com/ebaymotors/ws/eB...category=38634

and

http://cgi.ebay.com/ebaymotors/ws/eB...category=38634

I chose the second one because it looked like the filter was further forward and protected by the fan shroud from water spray from the fan.

It didn't come with installation instructoins, but its pretty easy to do.
__________________
1994 Jeep Wrangler YJ, 2.5L High Output, High flow aluminum intake, 4.0L Throttle Body, 62mm TB Spacer, bored out intake manifold, 5spd, 3" suspension lift, 31" BFG A/Ts, Two 10,000lb tow hooks, DT3000s, Outland lightbar, 5 high powered offroad lights, Mapp Nerf Bars, 102" whip antenna, Midland CB, 6 speaker soundbar, Smallest leaf removed, Air restrictor removed, No trackbars, No swaybars, No A/C, Custom 32 song horn-


http://www.cardomain.com/memberpage/753987
micfly83 is offline   Reply With Quote Quick reply to this message
Unread 04-25-2005, 05:07 PM   #8
dabomb5756
Registered User
 
Join Date: Feb 2005
Posts: 88
I want to do this to my 95 YJ with the 2.5.
When i go to junkyard, what should i look for? I am only wanting to put on 4.0 throttle body, and spacer. What all do i need, as far as sensors and such? What year 4.0 engine do i want to take it from? Also, what should i be looking to pay for these things?
__________________
88 Samurai, Locked, SPOA, Cage, 4.9:1, 31's.
dabomb5756 is offline   Reply With Quote Quick reply to this message
Unread 04-25-2005, 05:30 PM   #9
micfly83
Registered User
 
Join Date: Nov 2004
Posts: 317
Quote:
Originally Posted by dabomb5756
I want to do this to my 95 YJ with the 2.5.
When i go to junkyard, what should i look for? I am only wanting to put on 4.0 throttle body, and spacer. What all do i need, as far as sensors and such? What year 4.0 engine do i want to take it from? Also, what should i be looking to pay for these things?
I can't really help you hear. I lucked out and got one off JeepsUnlimited.com from another member who was trying to sell his because he rolled his Jeep etc. It was off a 4.0L YJ and he only wanted $35 for it. You can search for car parts over the internet at carparts.com, I think??. And I believe you can use a throttle body off a Cherokee or somethin from the same year, because the engines are the same. I'm sure someone will chime in with the exact details though

The sensors are a moot point. I used the 4.0L sensors and so far they have worked fine. It idles correctly sometimes (around 900 rpm) and sometimes it idles at 1500. When I first start her up in the morning in cranks up to 2000, but then readjusts down to the normal idle. I plan to correct this by just swapping out the AIS motors if I feel the need too. I'm going to leave the TPS; so far it has worked fine and I have no need to swap this. If you have a 5spd, your throttle cable should not be an issue either with the addition of a spacer. As stated above my gas pedal is now a little siffer, which I prefer.

As for the year you want the throttle body from; obviously you want one as close to the year you have. I believe any 91 and newer will work, but I would stay away from 97 and over, because they may have done something different with them. But again I'm not positive on this.

I belive when I was searching on the carpart websites the throttle bodies ran about $60 or so. You could easily spend $150 on one, but its not really worth it.
HTH
__________________
1994 Jeep Wrangler YJ, 2.5L High Output, High flow aluminum intake, 4.0L Throttle Body, 62mm TB Spacer, bored out intake manifold, 5spd, 3" suspension lift, 31" BFG A/Ts, Two 10,000lb tow hooks, DT3000s, Outland lightbar, 5 high powered offroad lights, Mapp Nerf Bars, 102" whip antenna, Midland CB, 6 speaker soundbar, Smallest leaf removed, Air restrictor removed, No trackbars, No swaybars, No A/C, Custom 32 song horn-


http://www.cardomain.com/memberpage/753987
micfly83 is offline   Reply With Quote Quick reply to this message
Unread 04-25-2005, 05:34 PM   #10
Shinner
Registered User
1992 YJ Wrangler 
 
Join Date: Jul 2003
Location: Central PA.
Posts: 1,270
Quote:
Originally Posted by micfly83
There were basically two intakes i had to choose from

http://cgi.ebay.com/ebaymotors/ws/eB...category=38634
http://cgi.ebay.com/ebaymotors/ws/eB...category=38634

I chose the second one because it looked like the filter was further forward and protected by the fan shroud from water spray from the fan.
Thanks...was just looking at both of those. The first one sits pretty high, was wondering if there'd be any greater protection from water at that height.

Quote:
Originally Posted by dabomb5756
When i go to junkyard, what should i look for? I am only wanting to put on 4.0 throttle body, and spacer. What all do i need, as far as sensors and such? What year 4.0 engine do i want to take it from?
Been told to get a 4.0 TB from the same year as your Wrangler, even if it comes from a Cherokee, the year is the important thing. You'll reuse the sensors off the 2.5 TB. Seems very simple to do and I hope to take care of it once the weather decides if it's spring or still winter.
__________________
His : 1992 YJ (Almighty 4 banger)
Hers: 2004 WJ Columbia Edition (4.7HO)

Black Jeep Society - Black Jeep Club V2.0 #37 - Merry Wacko Jeep Club #37 - Metalhead Jeep Club #37 - 2.5L Low Output Jeep Club #37
Shinner is offline   Reply With Quote Quick reply to this message
Unread 04-25-2005, 05:46 PM   #11
micfly83
Registered User
 
Join Date: Nov 2004
Posts: 317
Quote:
Originally Posted by Shinner
Thanks...was just looking at both of those. The first one sits pretty high, was wondering if there'd be any greater protection from water at that height.
Thats true, the one I have sits at about the height of my headlight and I wont be going into water that deep to get it sucked in . After hitten mud holes and I noticed that mud is sprayed all over the inside of the hood. Its basically from it splashing up and hitting the fan and splattering everywhere. The first intake seems like it could get some of this spray vs the other one, which is a little more protected in the area thats in. The first intake looks like it could have a little more of a ''ram" or "higher flow" effect, because theres nothing blocking it and thers not as many curves in the piping.

I'm sure they are both good
__________________
1994 Jeep Wrangler YJ, 2.5L High Output, High flow aluminum intake, 4.0L Throttle Body, 62mm TB Spacer, bored out intake manifold, 5spd, 3" suspension lift, 31" BFG A/Ts, Two 10,000lb tow hooks, DT3000s, Outland lightbar, 5 high powered offroad lights, Mapp Nerf Bars, 102" whip antenna, Midland CB, 6 speaker soundbar, Smallest leaf removed, Air restrictor removed, No trackbars, No swaybars, No A/C, Custom 32 song horn-


http://www.cardomain.com/memberpage/753987
micfly83 is offline   Reply With Quote Quick reply to this message
Unread 06-16-2005, 06:27 PM   #12
yj_x
Registered User
 
Join Date: May 2005
Posts: 28
I just finished a similar set up, but I built my intake tube out of 3" aluminized exhaust, and some copper couplings jb welded to tube for hoses. Total I spent $105. Luckily the TB I got came with the 90 degree elbow from the TB.

K&N Filter $58.99
http://cgi.ebay.com/ebaymotors/ws/eB...tem=7978176550

TB Spacer $19.85
http://cgi.ebay.com/ebaymotors/ws/eB...tem=7978717138

4.0 TB $26.84
http://cgi.ebay.com/ebaymotors/ws/eB...tem=7977551395



__________________
95 YJ 2.5L * 2" BDS Springs * 2" Shackle lift * Custom Air Intake with K&N filter * Herculined Tub * 33x1250 BFG MT * Thinking about swaping in an 8.8 * Optima Red Top * [URL=http://jeepn.jarzion.com]My Jeep Site[/URL] | [URL="http://www.4wdsearch.com"]4wdsearch.com[/URL]
yj_x is offline   Reply With Quote Quick reply to this message
Unread 06-17-2005, 07:00 AM   #13
dabomb5756
Registered User
 
Join Date: Feb 2005
Posts: 88
yj x, now do any type of mudding or water crossings. See what happens.
__________________
88 Samurai, Locked, SPOA, Cage, 4.9:1, 31's.
dabomb5756 is offline   Reply With Quote Quick reply to this message
Unread 06-17-2005, 07:11 AM   #14
What The?
Registered User
2000 TJ Wrangler 
 
Join Date: Jun 2002
Location: Wayne National Forest
Posts: 270
Quote:
Originally Posted by micfly83
..........
On a side note; I do not have a high flow exhuast at all, which could be restricting even more power gains. If I find a good deal on a flowmaster or something I may throw that on just to make it complete, but for now its great.
...............
Dynomax has a killer rebate on their ultra flow stainless steel mufflers, I got mine for $13 after rebate, others got theirs for free (after rebate).

http://www.jeepforum.com/forum/f7/huge-rebate-nearly-free-dynomax-muffler-167800/
__________________
Joe
What The? is offline   Reply With Quote Quick reply to this message
Unread 06-17-2005, 09:46 AM   #15
ErikJordan
Pimp Hand
 
ErikJordan's Avatar
1995 YJ Wrangler 
 
Join Date: Apr 2002
Location: Lakewood CA
Posts: 5,088
unless you are going to feed it more fuel, and spark, you wont see significant changes with this mod.
it sounds different, but you wont have any "real" gains.
i did it on mine, and even with the larger injectors, i wish i had spent the money elsewhere
__________________
___________________________________________


What is all of this talk of Savvily designed products?
ErikJordan is offline   Reply With Quote Quick reply to this message
Reply

Quick Reply
Message:
Options

Register Now

In order to be able to post messages on the JeepForum.com forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.
User Name:
Password
Please enter a password for your user account. Note that passwords are case-sensitive.
Password:
Confirm Password:
Email Address
Please enter a valid e-mail address for yourself.
Note: All free e-mails have been banned due to mis-use. (Yahoo, Gmail, Hotmail, etc.)
Don't have a non-free e-mail address? Click here for a solution: Manual Account Creation
Email Address:

Log-in

Human Verification

In order to verify that you are a human and not a spam bot, please enter the answer into the following box below based on the instructions contained in the graphic.


Thread Tools


Suggested Threads





Jeep, Wrangler, Cherokee, Grand Cherokee, and other models are copyrighted and trademarked to Jeep/Chrysler Corporation. JeepForum.com is not in any way associated with Jeep or the Chrysler Corp.