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Finally found a Jeep #1687959
10/19/14 07:03 PM
10/19/14 07:03 PM
Joined: Jan 2003
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been looking for a while for an older jeep to pull behind the motor home on trips. found a clean 2002 Wrangler with a 4.0 6. what are easy mods on these to gain a little power and better fuel mileage. also is there a way disconnect the front wheels when on the highway, like locking hubs?


Re: Finally found a Jeep [Re: Quicktree] #1687960
10/19/14 08:00 PM
10/19/14 08:00 PM
Joined: Jul 2006
Posts: 9,366
Lehigh Acres, Florida
rickstershemi Offline
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Nice looking jeep....towed mine a bunch and just kicked the transfer case into neutral and forgot about it.....never had a problem....have fun with it.

Bought mine new in 2001 for $10,300 and sold it ten years later for $10,000

Rickster

Re: Finally found a Jeep [Re: rickstershemi] #1687961
10/19/14 08:24 PM
10/19/14 08:24 PM
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yea no kidding they are proud of these things

Re: Finally found a Jeep [Re: Quicktree] #1687962
10/20/14 03:44 AM
10/20/14 03:44 AM
Joined: Apr 2010
Posts: 10,570
Sunny South Florida
Golden-Arm Offline
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trans in neutral, transfer case in neutral, and tow away. i added an air raid air filter kit, and throttle body spacer, and a tuner for the computer, and had no problems lighting them up. cat back exhaust, and i saw a slight increase in mpg. the main thing was quicker acceleration, and more torque on the low end.



weld some tow tabs on, or get some frame mounted ones, and get the light kit, so you can run the tail lights and turn signals, while towing.





"When Tyranny Becomes Law, Rebellion Becomes Duty"

Re: Finally found a Jeep [Re: Golden-Arm] #1687963
10/20/14 03:59 AM
10/20/14 03:59 AM
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Quote:

trans in neutral, transfer case in neutral, and tow away. i added an air raid air filter kit, and throttle body spacer, and a tuner for the computer, and had no problems lighting them up. cat back exhaust, and i saw a slight increase in mpg. the main thing was quicker acceleration, and more torque on the low end.

weld some tow tabs on, or get some frame mounted ones, and get the light kit, so you can run the tail lights and turn signals, while towing.


it already has the K&N cold air kit, i''l look for the spacer.do you remember the name of the tuner for the computer? I was told to put the transfer case in neutral and the tranny in park when towing? will be using the blue ox tow bar system, I do have to get a light kit. did you have to get a brake assist for towing? I think our law states anything over 3000lbs has to have brakes while towing? thanks for the help

Re: Finally found a Jeep [Re: Quicktree] #1687964
10/20/14 05:53 AM
10/20/14 05:53 AM
Joined: Apr 2010
Posts: 10,570
Sunny South Florida
Golden-Arm Offline
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tranny in park? my stick didn't have park as a choice.

if auto, then yes, in park. i wouldn't worry about the brake assist. you won't even feel the jeep back there*. in fact, you might even forget it, and back up while holding it.

it's been a while, but i'm thinking the comp got a "jet stage 2" module. a 62mm throttle body also went on. for the add-ons, i take what the manufacturer claims, then subtract 50% from their low number. if you add-on 40 hp worth of stuff, figure 15-20hp actual gains. opening up the exhaust is probably the single biggest benefit for the 4.0, short of a ported head and a cam.

* i never towed my jeep behind anything, i just towed with it. i've always sold a jeep, for more than i paid for it. they retain value if you take care of them, and use quality parts while keeping the factory take-offs in boxes.


"When Tyranny Becomes Law, Rebellion Becomes Duty"

Re: Finally found a Jeep [Re: Golden-Arm] #1687965
10/20/14 10:45 AM
10/20/14 10:45 AM
Joined: Jul 2010
Posts: 1,845
Tampa
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DusterDave Offline
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Tampa
Nice TJ, Quick! Looks like it was well cared for!


Gone to the dark side with an LS3 powered '57 Chevy 210
Re: Finally found a Jeep [Re: Quicktree] #1687966
10/20/14 10:50 AM
10/20/14 10:50 AM
Joined: Jan 2003
Posts: 8,005
Tulsa OK
Bad340fish Offline
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I have heard lots of people say the throttle body spacers don't do anything. That makes sense to me because its not flowing fuel, so all it really does is add a small amount of plenum volume.

I have been running a stroked 4.0 for about 10 years now, love it.


68 Barracuda Formula S 340
87 "Chrysler" Conquest
Re: Finally found a Jeep [Re: DusterDave] #1687967
10/20/14 03:11 PM
10/20/14 03:11 PM
Joined: Apr 2010
Posts: 10,570
Sunny South Florida
Golden-Arm Offline
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that silver one looks like it's ready to roll. take care of it, and you'll be able to sell it, for what you paid for it.

as far as throttle body spacers not working, i'll refer you to the testing done on all motor mods, by 4 wheeler network. they have done real world testing on a large collection of "power mods" for the 4.0. i'm not sure why it works with mpfi systems, but it does offer some gains. maybe the added plenum volume allows for less turbulence? maybe the motor just think the thing looks cool, so it tries harder? who knows.

4.0 motor mods test


"When Tyranny Becomes Law, Rebellion Becomes Duty"

Re: Finally found a Jeep [Re: DusterDave] #1687968
10/20/14 10:29 PM
10/20/14 10:29 PM
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Nice TJ, Quick! Looks like it was well cared for!


thanks, it's pretty clean for the age. wanna trade

Re: Finally found a Jeep [Re: Golden-Arm] #1687969
10/20/14 10:32 PM
10/20/14 10:32 PM
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that silver one looks like it's ready to roll. take care of it, and you'll be able to sell it, for what you paid for it.

as far as throttle body spacers not working, i'll refer you to the testing done on all motor mods, by 4 wheeler network. they have done real world testing on a large collection of "power mods" for the 4.0. i'm not sure why it works with mpfi systems, but it does offer some gains. maybe the added plenum volume allows for less turbulence? maybe the motor just think the thing looks cool, so it tries harder? who knows.

4.0 motor mods test


yours looks nice also, thanks for the help the big tires and wheels are coming off. I picked up 5 brand new Michelin 17" tires and wheels tonight for $350. going to put a black hardtop on it and then start working on the motor.

Re: Finally found a Jeep [Re: Golden-Arm] #1687970
10/21/14 12:36 AM
10/21/14 12:36 AM
Joined: Jan 2003
Posts: 8,005
Tulsa OK
Bad340fish Offline
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Quote:

that silver one looks like it's ready to roll. take care of it, and you'll be able to sell it, for what you paid for it.

as far as throttle body spacers not working, i'll refer you to the testing done on all motor mods, by 4 wheeler network. they have done real world testing on a large collection of "power mods" for the 4.0. i'm not sure why it works with mpfi systems, but it does offer some gains. maybe the added plenum volume allows for less turbulence? maybe the motor just think the thing looks cool, so it tries harder? who knows.

4.0 motor mods test




Actual increase according to the article was 1hp, unless it's free and puts itself on I'm not so sure it's worth it lol.

While I have never dyno'd mine I have never noticed an increase when I ran an open element filter. It very well could be up some horsepower but I think that is washed put by extra heat intake etc(in my application).

I have always wanted to try one of the newer intake manifolds on my stroker but never have. I stuck this thing together ten years ago and it's been so good I hate to mess with it.


68 Barracuda Formula S 340
87 "Chrysler" Conquest
Re: Finally found a Jeep [Re: Bad340fish] #1687971
10/21/14 06:27 AM
10/21/14 06:27 AM
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Quote:

that silver one looks like it's ready to roll. take care of it, and you'll be able to sell it, for what you paid for it.

as far as throttle body spacers not working, i'll refer you to the testing done on all motor mods, by 4 wheeler network. they have done real world testing on a large collection of "power mods" for the 4.0. i'm not sure why it works with mpfi systems, but it does offer some gains. maybe the added plenum volume allows for less turbulence? maybe the motor just think the thing looks cool, so it tries harder? who knows.

4.0 motor mods test




Actual increase according to the article was 1hp, unless it's free and puts itself on I'm not so sure it's worth it lol.

While I have never dyno'd mine I have never noticed an increase when I ran an open element filter. It very well could be up some horsepower but I think that is washed put by extra heat intake etc(in my application).

I have always wanted to try one of the newer intake manifolds on my stroker but never have. I stuck this thing together ten years ago and it's been so good I hate to mess with it.


tell me about your stroker?

Re: Finally found a Jeep [Re: Bad340fish] #1687972
10/21/14 03:49 PM
10/21/14 03:49 PM
Joined: Jan 2003
Posts: 8,005
Tulsa OK
Bad340fish Offline
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It's a budget stroker made with stock parts. Lots of info on the internet and many ways of doing it. It uses a stock 4.0 block, stock AMC 258 crank and rods, and 4.0 pistons.

It really goes together seamlessly, nothing had to be modified other than shimming the crank girdle up to clear the extra stroke. The stock crank girdle is super flimsy but I put it back on anyways, can't hurt.

I used ford Motorsport 24lb injectors and a crane cam. It runs well, it's in my xj Cherokee that is lifted with 35" tires. It weighs about 4400lbs and it moves well. It will run 80mph with the AC blasting no problem. It will also push it way faster than it needs to. Math says I have done about 115with it when it had 33" tires on it.

There is more parts available now than there was ten years ago. Kb makes a piston to use the longer 4.0 rod with the 258 crank. I think the longer rod might help flatten the power some, it's kind of peaky like this. But I am sure some of that comes from the ecu programming not being ideal for an extra 37 cubes although it handles it well and has no problems.

These motors are pretty tough, a friend of mines Dad has a stroker 4.0 in a little altered car, it's been 9.40s with a ported stock head. He spins it to the moon and it's held together well for a few seasons now.

8307490-image.jpg (114 downloads)

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Re: Finally found a Jeep [Re: Bad340fish] #1687973
10/21/14 06:20 PM
10/21/14 06:20 PM
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thanks, i'll look into it

Re: Finally found a Jeep [Re: Quicktree] #1687974
10/21/14 06:44 PM
10/21/14 06:44 PM
Joined: Jan 2003
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Tulsa OK
Bad340fish Offline
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Quote:

thanks, i'll look into it




I wish I would have paid attention to proper quench etc when I built mine. I kind of threw it together as time was an issue. I am sure I have 15-20 hp left on the table from little stuff that wasn't scienced out. It's got 50k miles on it now so the combo is reliable.


68 Barracuda Formula S 340
87 "Chrysler" Conquest
Re: Finally found a Jeep [Re: Bad340fish] #1687975
10/21/14 07:47 PM
10/21/14 07:47 PM
Joined: Apr 2010
Posts: 10,570
Sunny South Florida
Golden-Arm Offline
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if you're going to wheel it, reliable is a huge factor.


"When Tyranny Becomes Law, Rebellion Becomes Duty"

Re: Finally found a Jeep [Re: Golden-Arm] #1687976
10/21/14 08:05 PM
10/21/14 08:05 PM
Joined: Jan 2003
Posts: 8,005
Tulsa OK
Bad340fish Offline
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Is been beaten like a rented mule off-road. It's seen hours of idle time with the AC on in the trails when it was over 100* outside(sometimes the wife goes lol). It's also seen rev limiter climbs and all sorts of fun. The fact that it's a stroker made from parts of two of the most bullet proof motors around shows sometimes.


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87 "Chrysler" Conquest
Re: Finally found a Jeep [Re: Quicktree] #1687977
10/21/14 11:06 PM
10/21/14 11:06 PM
Joined: Jul 2006
Posts: 9,366
Lehigh Acres, Florida
rickstershemi Offline
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Just my opinion but Dude drive it as is.....or if you have to put power to it put a 5.7 in it....it's been done and if you're going to have to update the drivetrain for a hopped up 6-Banger anyway....you might as well go for the Hemi and really have something to talk about

Rickster

Re: Finally found a Jeep [Re: rickstershemi] #1687978
10/22/14 08:16 AM
10/22/14 08:16 AM
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i''l drive it like it is for a while, don't have the energy to do the swap. don't really need a whole lot more. I think a few upgrades will be enough.

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