Jeep tb vs Ported tb

[raiders420a]

I have been doing some research and i only see two options.The jeep throttle body vs porting my old T.B. . i checked the local wrecking yards the only want 40 for the jeep tb and throttle body from a gs. So could i get the same results from just porting and cleaning the one i have on my car or is the jeep tb better for some reason

any help would be nice

 

[eligst21]

why change the rate of air coming in if you got the stock intake mainfold that pushes the same air regardless. anyways these so called tb and intake mani upgrades are virtually useless with out forced induction.

 

[VIGILART]

What year and model jeep?

 

[raiders420a]

it was a 95 wrangler i believe . and i wanted to see if anybody has personally ported the intake manifold. how hard was it or should i take it to a machine shop

why change the rate of air coming in if you got the stock intake mainfold that pushes the same air regardless. anyways these so called tb and intake mani upgrades are virtually useless with out forced induction.

im basically doing all of this so i can setup a turbo system before summer. this car is kinda my winter project. better to have all of this done so im not rushed installing everything.

 

[eligst21]

im basically doing all of this so i can setup a turbo system before summer. this car is kinda my winter project. better to have all of this done so im not rushed installing everything.[/QUOTE]

oh got you. well yeah but i would keep it saved untili actually turbo the car. i would do it all at once. im not sure about the jeep throttle bodies. i'm sure you can port and do that job on your intake mani yourself. just dont port too thin and try to make the runners smooth.

 

[Shake_Zulla]

You can do the TB work right now you don't have to wait to turbo it. One of the reasons why people use the Jeep TB is because when you port the stock TB it makes the walls pretty thin. People prefer the swap because they can get a 60mm opening with no porting involved while you can only port a stock to 56mm safely. Before you turbo if you go with the Jeep it will effect your throttle response but most people don't notice enough to care. I say go for it, it's 40 bucks and you don't have to put it on right away... but we all know you will.

 

[Fotowntalon]

anyways these so called tb and intake mani upgrades are virtually useless with out forced induction.

I completely disagree... but I will give you that an upgraded tb is virtually useless if you are bottle-necking into a stock IM opening.

 

[Carter_95RS]

What year and model jeep?

I got mine off of a mid 90's Cherokee. Make sure it is coming off of a 4.0L The one i pulled came as a 60mm so i didn't have to port it at all, and it gives me room in the future to port it out a little more.

If you're putting it on a n/t and port it out to 60mm, you will loose a little bit of low end torque...IIRC 57mm is "ideal" for a n/a application on this motor.

 

[raiders420a]

i know this is off topic but if you had to port your intake manifold or get one off of ebay. what would you do. i already have the jeep tb and im just looking for neon or gs one. they crushed the one at the junkyard so i gotta probably go out to Tacoma.i know the one off of ebay takes some fabrication .is it something i can do.or should i have a machine shop do it

 

[Shake_Zulla]

i know this is off topic but if you had to port your intake manifold or get one off of ebay. what would you do. i already have the jeep tb and im just looking for neon or gs one. they crushed the one at the junkyard so i gotta probably go out to Tacoma.i know the one off of ebay takes some fabrication .is it something i can do.or should i have a machine shop do it

I havn't seen many ebay intakes that looked like something I would want on my car. Stick with stock, it will be better than anything you find on ebay.

 

[Carter_95RS]

I havn't seen many ebay intakes that looked like something I would want on my car. Stick with stock, it will be better than anything you find on ebay.

I have to disagree, you can find good parts on eBay if you know what you're looking for

 

[crazyboy81]

Self ported just short of 58mm.

<a href="http://s267.photobucket.com/albums/ii283/nckyd81/?action=view&amp;current=IMAG0060.jpg" target="_blank"><img src="http://i267.photobucket.com/albums/ii283/nckyd81/IMAG0060.jpg" border="0" alt="Photobucket"></a>

4.0l jeep throttle body mod:
2GNT.com - Supplement_To_The_60mm_Jeep_TB_Article

why change the rate of air coming in if you got the stock intake mainfold that pushes the same air regardless. anyways these so called tb and intake mani upgrades are virtually useless with out forced induction.

I disagree as well since I notice a difference WOT. Take the total circumference of all 4 intake manifold ports and tell me 52mm is enough to cover it?

 

[Carter_95RS]

It looks good, and its a good size for staying N/A

 

[Shake_Zulla]

I have to disagree, you can find good parts on eBay if you know what you're looking for

I agree with you but not on the intake it is way less expensive to get one out of a junk yard and on a N/T if you got any bigger of a mani with that huge jeep TB your gains wouldn't outweight the paid price. Lets not turn this into a pro ebay vs con ebay thread please Like previously stated 57mm is best for NA 420a but people choose the jeep tb because it involves no porting. Stick with the stock intake and after you turbo it and are running high boost worry about a bigger manifold plenum.

Self ported just short of 58mm.

<
4.0l jeep throttle body mod:
2GNT.com - Supplement_To_The_60mm_Jeep_TB_Article



I disagree as well since I notice a difference WOT. Take the total circumference of all 4 intake manifold ports and tell me 52mm is enough to cover it?

^^This the throttle body is you first main bottle neck into your intake. Once the air makes it through that it has that whole cylinder to fill. It's the difference between thinking in 3 dimensional shapes and 2 dimensional shapes. Now I don't know anything about the 4g63 manifold so I don't know if Eligst21 has problems with his manifold or not... that is the reason why I post in the 420a section... cause thats what I know... thats what I work on... seeing my train of thought here?

 

[Fotowntalon]

I agree with you but not on the intake it is way less expensive to get one out of a junk yard and on a N/T if you got any bigger of a mani with that huge jeep TB your gains wouldn't outweight the paid price. Lets not turn this into a pro ebay vs con ebay thread please Like previously stated 57mm is best for NA 420a but people choose the jeep tb because it involves no porting. Stick with the stock intake and after you turbo it and are running high boost worry about a bigger manifold plenum.

First off 57mm for NA is the most.... "optimal" not necessarily the best. Its the biggest you can go for HP gains before you start losing low end. MB had had gains with up to a 65mm although he is losing low end, and his car is built for it, i wouldn't recommend this for everyone.

For intake manifolds, MB gained... i think it was 3whp going from a stock P&P IM to an ebay IM (also known as the OBX, same thing) that is after he ported it and everything. In my opinion its not worth the money and work for the little its giving you especially with the fitment issues and some reports of cracking issues when boosted.

Once again, in my opinion, there are only 2 real options for an IM. 1) stay stock and port and polish it. 2) Get the AMM IM

 

[Shake_Zulla]

First off 57mm for NA is the most.... "optimal" not necessarily the best. Its the biggest you can go for HP gains before you start losing low end. MB had had gains with up to a 65mm although he is losing low end, and his car is built for it, i wouldn't recommend this for everyone.

For intake manifolds, MB gained... i think it was 3whp going from a stock P&P IM to an ebay IM (also known as the OBX, same thing) that is after he ported it and everything. In my opinion its not worth the money and work for the little its giving you especially with the fitment issues and some reports of cracking issues when boosted.

Once again, in my opinion, there are only 2 real options for an IM. 1) stay stock and port and polish it. 2) Get the AMM IM

Sorry I lost my mind for a second. In the car world it's always optimal not best... forgive me.

 

[Fotowntalon]

I hope i didn't sound to much like a dick there, just saying that optimal is different because different people are looking for different things out of there car.

 

[crazyboy81]

I paid $35 shipped on ebay for that intake manifold with throttle body attached!

 

[bullettdsm]

why change the rate of air coming in if you got the stock intake mainfold that pushes the same air regardless. anyways these so called tb and intake mani upgrades are virtually useless with out forced induction.

No.

I've proven this on the 1/4 mile runs with direct swaps (from stock to 60mm TB's on alternating runs) on a couple of different set-ups. BUT the stock intake does have to be opened up at the neck to match the 60mm. That is the common prectice when putting a 60mm TB on.

MB

 

[crazyboy81]

MB speaks again. Listen.

 

[TalonEsi_96]

I got my throttle body for my n/t done at CIMotorsports.

 

[Fotowntalon]

i would recommend against them, sometimes they do good work, but lot of times they do shotty work, just search around, they get a lot of poor reviews