More Power!!!

K

Krazytrain

New member
Help! I just returned from a Jetski/Camping vacation where I pulled a double trailer with 2 skis (1500 pounds) plus camping gear for 6 hours. Once I hit the hills in SC I swore I was going to sell my O4 Rubicon 4.0 manual for it's lack off power. Low and mid aren't bad but going up hill I would floor it and still be slowing down. I want to keep my Rubicon but need to add more top end power.

What are the common things done...ie header, exhaust, air intake, power chip...etc. I don't mind spending some money but don't want to void a warranty or sacrifice reliability.

Suggestions please....

KT
 

I have an '01 Sport with a 4.0 and a 5spd. I put 33" tires on it and even with the 4.10 gears I still don't get to see 5th gear unless I'm on flat, wide open ground. When I'm pulling my trailer up the mountain to go camp I just put it in 3rd and go. I can do 55-60 without breathing too hard all the way up the hill. I've even been known to pass a few full size trucks towing smaller trailers than mine.

The only mods I've done to my engine is a throttle body spacer and K&N filter on a Rocket Air tube. I would imagine a good header/cat/exhaust combination would do the trick. However, I don't think I want to go much faster pulling a trailer.
 
RE: girl + jeep

Yeah but 55-60 won't do for highway travel. I don't need much but I definately need a boost in top end power. Do the spacer and air intake systems hurt reliability? Do the chips really improve performance? If so how much? Any answers to these questions will be helpful.

KT
 
Spacers and intakes dont hurt reliabilty, but in my opinion the spacer is useless. Chips arent that great, but if your going to get one, get the Hypertech programmer.

Hate to tell you, but pulling all that weight, how much power can you expect from a 243 cubic engine while traveling UPHILL????

You can regear, put on the bolt on goodies, and your still going to be slow pulling all that weight.
 

RE: Just bought a 95 Cherokee Sport, what

I heard the chip is a waste of money. Go with a quality exhaust and get some more air into the engine.
 
Krazytrain said:
Yeah but 55-60 won't do for highway travel.
Click to expand...


You're pulling a trailer...with a Jeep. What do you expect??

What do you mean 55-60 won't do for highway travel?? You won't get in trouble for going that slow with a trailer. If I'm pulling a heavy load with a truck, I would expect it to slow down a little on hills (more or less depending on the size of load).


With a SHORT wheelbase vehicle, I would not really want to go much faster than that with a trailer behind me :wink:
 

wrangler top on a CJ7?

Get a good header and get a bored out TB. Try that. If you running stock gears with bigger tires than your getting what you deserve....All else fails you can get a avenger supercharger.(for about 3k)lol
 
Re: RE: Tailgate Replacement?

Im new to the jeep world but as far as reliability, air intake and exhaust/header combo is your best bet. You will gain about 30-40 hp with a good setup. Stay away from chips because they will void your warranty on your drivetrain all together. Air intake you can pop off when you need to service it if they say anything and your cpu will not throw codes (it will with a chip). Exhaust and headers are overlooked in the warranty department because all that deals with is output of airflow. Dont do supercharger, turbo, or chip if you are worried about warranties.

Also a bigger throttle body would help as the above suggested.
 
RE: someone check me...

Pauly420 said:
air intake and exhaust/header combo is your best bet. You will gain about 30-40 hp with a good setup.
.
Click to expand...

I'm a bit sceptical of those hp gains...especially if the cat is left on, which it would need to be for the engine to run right if there is an O2 sensor behind it. I'm just not a big fan of intake/exhuast mods, unless an improvement in sound is what you're after.

Just remember: there is no replacement for displacement (or a blower!)
 
I agree with you GaryMB. Unless his catalytic converter or muffler is plugged up bad, he won't really gain much at all from exhaust and intake. It sure can't hurt, and you'll probably gain around 5-10hp/torque, but no way you'll get 30-40hp.

Oh, and with a 2004 TJ, I really doubt the exhaust is plugged up yet...
 

This won't give you much power but it will give you a little. When I added my snorkel I noticed a difference both in power and fuel mileage. It acts like a ram air and gives you a constant flow of cool air. Even in the summer since your intake is much higher up, it isn't sucking in the hot air that is heated by the street. I think that by adding a bunch of small upgrades you'll notice a difference....such as exhaust, header, chip, snorkel, TBS ect. You might even look into different gears.
 
Dusy-Ershim Trail, Central CA

Or put in a supercharged GM 572. Then add Nitrous, Co2, twin turbo chargers....and I think you could pull the hell out of that trailer.
 

RE: someone check me...

Unfortunately, I don't think the rear tires would last very long since they'll be the only ones touching the pavement. I've pulled the trailer a lot and 50-65 is about as fast as I want to go. Especially going uphill on a windy road. You could go to AEV in Utah and have them drop in the new Hemi. However, I think that runs quite a bit more than a supercharger.
 
RE: Re: My last trail run

If pulling a trailer is what you want to do then you should've bought a vehicle more suited for that purpose. I say trade it and get something else. You'll be better off speeding down the highway in something with a longer wheelbase anyway.
 
Get rid of his Rubicon?!?! I cannot believe my eyes...at most I could understand trading it in for an Unlimited Rubicon :wink:
 

RE: Re: RE: 4Low question...

You have an auto or manual? Either way, I don't care what type of vehicle you are driving, you shouldn't be towing in overdrive, hard on a transmission and no power. Were you attempting hills in 5th gear?

Ever notice the Wranglers do not come with tow packages?


:|
 
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