4.0l owners....lets talk power and performance

[BUDAKANE]

I love the I6 especially the torque ,you will be amazed at how much power you can get out of them it might not be a 5.7 hemi but it will move! post all your 4.0l mods and beats.........

[hemi.jon]

my 4.0l wrangler was the fastest in town, even with 35x14.50 tires.

i had CAI, PAce setter header, exhaust with not cats. Venom 400 chip (beast of a chip) and 4.56 gears in my axles. the 5spd helped alot to. but like i said i was fast in it. i could even out run alot of ricers i knew.

http://c4.ac-images.myspacecdn.com/images01/120/l_9305782b8222fdcfc6bd617fdf52b5ef.jpg

[BUDAKANE]

fine ill star on my own thread.....future mods include nitrous of course, and to be completely honest im leaning heavily twd an engine swap for a rebuilt 5.9 and tranny until then the only thing left is nitrous the cheap alt or the 4.6l stroker kit still havent decided yet i have good deals on both!

[BUDAKANE]

am i the only 4.0l owner to beat a mustang gt? i doubt it but ya never know....however thats not my best beat...any takers?

[robpp]

i have a 4.0 in my XJ. I am the original owner. I can agree on the torque and the actual power of that little beast.
My only mods are a K&N FIPK, Borla CatBack and FirePower Ignition. That little thing pulls all day long. Out here we have 70 and 75 speed limits, that means cruising 80 no problem. That little 4.0 can do 80 all day long and can do more if needed for spurts to pass someone.

if you want to engage me further inthis thread you got to change your text to something readable, please!

[Chaoul1]

Nothing yet but later I will get a K&N Filter and probably a performance exhaust.

[BUDAKANE]

hey paul you know i got the hook up tell me the brand ill get it cheap and put it on

[mon_21]

Rob, get me a Super 40 and I'll see you at the shop with 12 packs of dos xx!

[BUDAKANE]

too easy ramone however if ur gonna spend ur money on a exhaust u might as well get the best for ur engine with my discount they are not far apart as far as price goes.......

[mon_21]

waht dafak do u have in mind now? I dont want what u have, because I dont race or drag. I just want to wake up my neighbors when I leave for work at 5 in the morning.....lol

[BUDAKANE]

why the f*ck u so hostile? Im just tryin to help my friends out and i get this? Its ok.......

[mon_21]

hahahahaha Rob..... me hostile? Chill dude! didnt you see the LOL at the end? need a hug big guy?

[Chaoul1]

Same with me I want to wake up my neighbors also. I would like just a little more power. Not a whole lot but just a little.

[00wj]

BUDAKANE - what was the cheapest mod you did with the most performance gain?
I have a cold air intake, throttle body spacer, 180 termostat, and a superchip programer

[Dylans3960ccs]

I'm gonna go all out when I get some money and how much is the 4.6 Oh and the only time I've passed people is when I go to tennessee to see my cousin and I pass people on two lane roads going 60 to 80ish and thats with loads of cargo including by brother that makes any car without a half good suspension sag, mother and I.

[BUDAKANE]

00wj.....first of all a throttle body spacer is junk unless u have a bored throttle body and have the spacer bored also ,all a throttle body spacer wil do is whistle on a stock throttle body, now with the thermastat.....not bad , a stroker kit will cost between $1400-1800 bucks i with my father in law owning his own shop i can get it for a grand flat out!! i would say the headers and bigger throttle body to answer ur question

[BUDAKANE]

might sound funny but im considering while i have time.. of outting some dumps maybe an electric exhaust cutoff i ran my jeep open headers for a couple day sand i love the sound and besides for a couple etra ponies its worth waking up ur neighbors lol

[NHWK05]

fine ill star on my own thread.....future mods include nitrous of course, and to be completely honest im leaning heavily twd an engine swap for a rebuilt 5.9 and tranny until then the only thing left is nitrous the cheap alt or the 4.6l stroker kit still havent decided yet i have good deals on both!


Why a 5.9? The 5.2 and 5.9 engines are not exactly the most reliable on the road and as compared to the 4.7 and the 5.7 they not that powerful/full of torque to start off with.

IMHO stroke the I6, or do a 4.7 swap. There is a reason the 5.2 and 5.9 were replaced.

[BUDAKANE]

good point, duly noted however i guess i wanted the my engine is bigger than urs thing goin....however my inline as of now is stronger than the 4.7 so i might as well just stroke it and later toss in a supercharger........

[Dylans3960ccs]

I like turbos better.

[Dylans3960ccs]

the throttle body spacer actually increases torque.

[00wj]

BUDAKANE - with the spacer i notice better mpg and a better throttle responce... I wanted to get the throttle body but i didnt get as much money as i thought i would so i didnt get it... and as for the stroker i would do it next summer if i could get it at your price... i'll be getting the trottle body next...

[Dylans3960ccs]

Oh if it's throttle response your after you could just make some ITBs (independent throttle bodies) haha.

[00wj]

haha i think i got a good throttle response now with the superchip... now i need some horsepower!

[BUDAKANE]

00WJ do you have paypal? i do if u ever need anything i get everything 35% off on parts wholesale so hit me up i can even install if ur close enuff!! no charge!! and put on bigger headers bigger throttle body and an exhaust u will be on ur way

[Dylans3960ccs]

take off the spacer lol.

[00wj]

BUDAKANE - I do have paypal and thank you... i do want more power but i need to save up lol what type of exhaust and headers would sound good on my jeep?

[00wj]

take off the spacer lol.

It's proven to give me 1 mpg better so it will stay on... i only get 15 mpg...

[00wj]

00WJ do you have paypal? i do if u ever need anything i get everything 35% off on parts wholesale so hit me up i can even install if ur close enuff!! no charge!! and put on bigger headers bigger throttle body and an exhaust u will be on ur way

i forgot to ask... what state do u live in?

[Dylans3960ccs]

Hamana Hamana Hamana Hamana.

[Dylans3960ccs]

(southern accent) Viriginia (end southern accent)

[BUDAKANE]

Banks headerrs all the way they will make ur engine roar plus its dyno proven the only headers for our engine to give us 5hp and gibson is also the only exhaust dyno'd and guaranteed 20 hp it roared when i got it and with the headers on i can set off most cars alarms!! just wait till i get the cutoffs lol i will post a video of my exhaust setting off my neighbors wj again!!

[BUDAKANE]

and about tha damn spacer.... get it bored to 63mm and a throttle body to match and you will see some REAL throttle response!!! i can can smoke my tires with 20's easy just imagine when i put on my stocks and go to the track with it

[Dylans3960ccs]

I had a nice cherp on some slick soft tires before they were rotated.

[00wj]

Banks headerrs all the way they will make ur engine roar plus its dyno proven the only headers for our engine to give us 5hp and gibson is also the only exhaust dyno'd and guaranteed 20 hp it roared when i got it and with the headers on i can set off most cars alarms!! just wait till i get the cutoffs lol i will post a video of my exhaust setting off my neighbors wj again!!

Can't wait to hear it!

[BUDAKANE]

do just not add reputation points or ehat? whether u guys think this is a whack thread or what at least leave feed back i do it for every1 else i expect the same and will post that vid real soon

[Dylans3960ccs]

some ones hatin' on the 4s

[NHWK05]

good point, duly noted however i guess i wanted the my engine is bigger than urs thing goin....however my inline as of now is stronger than the 4.7 so i might as well just stroke it and later toss in a supercharger........


DOOO EEEETT


There are a few people in my other club that wheel Turboed 4.0's.

[Chuck]

Wow I wasn't even aware that you had a 4.0, with those mods and what you mentioned I always thought you has a 4.7. Nice, represent the 4.0 :thumbsup:.

I only have a Magnaflow exhaust. Thats about it right now. I'm not sure if I'll add anything else.

[NHWK05]

My best friend has a 2001 XJ cherokee, (same as the wj 4.0 HO) Banks header, K&N FIPK, Flowmaster series 40 muffler, 2.5" pipe from header back. 3" tip, Resonater removed.

I must say it has to be the best sounding, throatiest, most responsive 4.0 i have ever driven with nothing but bolt on performance mods.

[S.O.T.I.]

BUDAKANE - what was the cheapest mod you did with the most performance gain?
I have a cold air intake, throttle body spacer, 180 termostat, and a superchip programer

Your Jeep is looking hot! I like the white with the SRT rims. Really nice.

[00wj]

Thank you! :D
I wish i had the SRT wheels... these are Iroc wheels
I would trade them for the srt wheels anytime. Anyone want to trade.... lol

[NHWK05]

Thank you! :D
I wish i had the SRT wheels... these are Iroc wheels
I would trade them for the srt wheels anytime. Anyone want to trade.... lol
i'll buy em if u wanna sell them and the price is right and i have money. lol

[00wj]

I'll sell them do u want them with or without tires?

[NHWK05]

I'll sell them do u want them with or without tires?

If i had money, Id want them with tires but realistically i cant spend that kind of money right now, Tis just a dream.

[00wj]

haha well im not in any rush to sell them so if you change your mind in a few months to a year ill sell them to you for a good price

[NHWK05]

Cool deal, thanks.

[S.O.T.I.]

Thank you! :D
I wish i had the SRT wheels... these are Iroc wheels
I would trade them for the srt wheels anytime. Anyone want to trade.... lol
IROC? as in the Camaro? Where did you find those? Post some better pics of your Jeep so I can see how they look. or a link if you already have!

[00wj]

haha yes... i found them at a rims shop near where i live
here's the link there's a lot of pics there http://www.cardomain.com/ride/3179044

[AcidCold]

Question for those with plenty of knowledge with the 4.0..
I have an 88 xj 4.0 which gets veeeery hot! here in chicago we get plenty of humidity (which i don't know if that has an effect on the engines) it tends to overheat and i was wondering if i were to remove the thermostat completly off for a constant flow, will that effect anything else? i don't want the engine to run lean or have any negative effects that will be costly down the road.
Any ideas? i know the best thing to do is to buy a 180 degree for all year round but if i can get away with removing it just for the summer, then that will make my day.
Thanks.

[Dylans3960ccs]

I think you should just put a dual electric fan in it and be done.

[BUBBADOG]

First off the 4.0l is bullet proof but you not getting any power of it unless u stroke it 4.6l or do what i did and add 100 shot of juice point blank!! i did just about every bolt on made for the thing besides gear and ran 10.52 in the 1/8 mile lol...14.6's in the 1/4 mile with a 90 shot other than that where u getting torque from is beyond me lol...

[Dylans3960ccs]

what jeep did you own that had a 4.0?

[BUBBADOG]

what jeep did you own that had a 4.0?If you talking to me i still own a 2001 4.0l WJ with tons of bolt on's...........http://i208.photobucket.com/albums/bb91/bubbadog4x4/trackburnout.jpg

[Dylans3960ccs]

Oh my!!!

[Dylans3960ccs]

do you have any vids of it?

[BUBBADOG]

do you have any vids of it?I sure do bro here's 2 of them want more just holla...

First race is me spraying a 90 shot on a WOT switch in 2WD drive didnt work out so well lol...

http://www.youtube.com/watch?v=s1-0ujb6tZw


The truck on the dyno!!

http://www.youtube.com/watch?v=ew4AYSJ6WYQ

[Dylans3960ccs]

Wow that thing puts down a lot to the wheels. What did it make without nos 200/199hp I think?

[NHWK05]

Question for those with plenty of knowledge with the 4.0..
I have an 88 xj 4.0 which gets veeeery hot! here in chicago we get plenty of humidity (which i don't know if that has an effect on the engines) it tends to overheat and i was wondering if i were to remove the thermostat completly off for a constant flow, will that effect anything else? i don't want the engine to run lean or have any negative effects that will be costly down the road.
Any ideas? i know the best thing to do is to buy a 180 degree for all year round but if i can get away with removing it just for the summer, then that will make my day.
Thanks.

Its prolly because that 4.0 has the closed cooling system and any xj prior to 92 is known for always running hot and over heating. You would have to convert it to the newer style cooling system, an open system. Which is not cheap but its pretty easy. I hate working on any 4.0 that is not a HO engine. the renix 4.0 is a bitch.

[AcidCold]

Nice to know, thanks Kyle! i might throw in a aluminum radiator as well.

[BUDAKANE]

i dont mean to betray u guys....i just came across a awesome deal for a stroker and supercharger and i am gonna do it however i wil be a 4.0l owner 4 life!!!

[scjeep4.7HO]

What supercharger are you looking at?

[BUDAKANE]

i was lookin at paxton but i think im goin with vortech

[BUDAKANE]

kenne bell is way out of my pricerange........unless i start pimpin again

[scjeep4.7HO]

LOL. My blower may be for sale soon. hell I may be getting the 2000 sooner than I thought.

[BUBBADOG]

LOL. My blower may be for sale soon. hell I may be getting the 2000 sooner than I thought.Man no body wants your cheap azz blower lol...How much ??

[scjeep4.7HO]

Man no body wants your cheap azz blower lol...How much ??


man I am only selling it to friends. LOL

[Big Perm]

I dunno about modding my engine. Seems like it wouldnt be worth it to mod my 4.0 unless I went balls 2 the walls like you budd haha

[Dylans3960ccs]

how high do you guys think my engine would rev if I welded the camshaft?