Author Topic: throttle body/Intake question  (Read 1502 times)

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blacknblue

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throttle body/Intake question
« on: July 11, 2008, 07:59:34 PM »
So I am shopping around for a 4.0 throttle body to swap in.  I have also been checking out cold air intakes.  Most of the quality ones...K&N, Volant only have applications for the 4.0.  I run a Banks header (torque tubes) and a Banks Monster exhaust.  Banks makes a ram-air cold air intake for the 4.0.  Here is my million dollar question..."If I were to swap in a 4.0 tb then would a cold air intake designed for a 4.0 work?" :confused:  Or would I need an intake designed for a 2.5?  Are they designed based on the size of the throttle body or the location? 

Offline Jeffy

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Re: throttle body/Intake question
« Reply #1 on: July 11, 2008, 08:10:19 PM »
So I am shopping around for a 4.0 throttle body to swap in.  I have also been checking out cold air intakes.  Most of the quality ones...K&N, Volant only have applications for the 4.0.  I run a Banks header (torque tubes) and a Banks Monster exhaust.  Banks makes a ram-air cold air intake for the 4.0.  Here is my million dollar question..."If I were to swap in a 4.0 tb then would a cold air intake designed for a 4.0 work?" :confused:  Or would I need an intake designed for a 2.5?  Are they designed based on the size of the throttle body or the location? 

No, it has nothing to do with the TB but rather the placement of the TB.  The 4.0L has the TB further forward so it will be short for a 2.5L.
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Offline VA_YJ

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Re: throttle body/Intake question
« Reply #2 on: July 14, 2008, 02:30:15 PM »
I am running an AEM Bruteforce CAI with a 4.0 throttle body on my 2.5 liter engine.  Works real well.  The dryflow element does not require oiling.
95 YJ, 31 BFG ATs, 4.0 TB & spacer, Banks header, DynoMax CAT back, 19# inj, AEM CAI, 20 gal mod, Optima yellow
98 TJ, 35 BFG Krawlers, 4.0 liter, ax15, atlas 5:1, armor, Super 88 (under construction)
96 XJ Cheep Cherokee, 33s, 4.0 liter, AW4, future project
89 Waggy, 360 V8 727 dana 44s, it runs

GeorgiaYJguy

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Re: throttle body/Intake question
« Reply #3 on: July 14, 2008, 03:03:02 PM »
So all yall running a 4.0 tb on an 2.5 Is that like a 91 and up 2.5. ? Just dont look rite on my 89

Offline Jeffy

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Re: throttle body/Intake question
« Reply #4 on: July 14, 2008, 03:55:14 PM »
So all yall running a 4.0 tb on an 2.5 Is that like a 91 and up 2.5. ? Just dont look rite on my 89

Might want to peruse the FAQ.

http://4bangerjp.com/forums/index.php?topic=8.0
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"If the motor car were invented today, there is absolutely no way that any government in the world would let normal members of the public drive one."

blacknblue

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Re: throttle body/Intake question
« Reply #5 on: July 15, 2008, 04:26:53 PM »
Thanks for the help Jeffy.  I will probably run the 4.0 t/b with my stock intake and establish a baseline for the CAI mod later on.   Here is a link to JP magazine... they did a cold air intake shoot out on a dyno and compare 4-5 of the top intakes.  http://www.jpmagazine.com/techarticles/engine/154_0804_jeep_wrangler_intake_shootout/index.html      :thumbsup:

blacknblue

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Re: throttle body/Intake question
« Reply #6 on: July 15, 2008, 04:29:03 PM »
Sorry... actually the review is for 10 of the top cold air intakes.

Offline Bounty Hunter

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Re: throttle body/Intake question
« Reply #7 on: July 16, 2008, 12:06:05 PM »
Consider a 62mm throttle body, 7mm larger than the 4.0 tb and removes the taper for quicker off-idle throttle response.  Check out the classifieds.

blacknblue

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Re: throttle body/Intake question
« Reply #8 on: July 16, 2008, 04:24:37 PM »
I was considering the 62mm... I will look into it...thanks Bounty Hunter.