Increasing Your Horsepower? Read - Page 2 - Jeep Wrangler Forum
Jeep Wrangler Forum

Go Back   Jeep Wrangler Forum > TJ Jeep Wrangler Forum > TJ General Discussion Forum

Join Wrangler Forum Today


Reply
 
Thread Tools

Please support our sponsors and let them know you heard about them on WranglerForum.com
Old 05-31-2011, 09:21 AM   #31
President, ThumbJeeps

WF Supporting Member
 
sevenservices's Avatar
 
Join Date: Sep 2009
Location: Mid-Michigan/Thumb
Posts: 3,937
oh, and you could always go with the ol' flame paint job. I've heard painting flames on it will add +20 horsepower


hehe...

__________________
-Chris
President, ThumbJeeps
CB Callsign "AirForce One"


1994 Wrangler YJ I6 4.0 H/O Auto 3 spd. 4" RC (33x12.5) (15x8) 3:54 Gears
sevenservices is offline   Quote Quick Reply
Old 05-31-2011, 10:01 AM   #32
Jeeper
 
Join Date: May 2011
Posts: 317
Minimum.

Hemi YJ is offline   Quote Quick Reply
Old 05-31-2011, 04:07 PM   #33
Jeeper
 
neverfastenough1's Avatar
 
Join Date: Nov 2010
Location: Savannah, Ga
Posts: 925
Quote:
Originally Posted by Mr_RPM View Post
Nitrous Oxide

aka NOS
Lol, its funny how ricers call their laughing gas system NOS no matter who makes it. I think if you put a NOS sticker on your ZEX kit, you automatically double the output. I think you can get away with more than a 50 shot. Plus, I don't think a 50 shot is worth the 500 or more bucks it takes to get a good starter system, wet or dry. Then you have to spend 50 bucks to fill it up every time its empty. Mine would be empty all the time, lol. Just imagine how expensive it would be when you decide you want a bottle warmer, window switch, automatic bottle opener, and so on, 1000+ buckaroos. No replacement for displacement, except FI.
neverfastenough1 is offline   Quote Quick Reply
Old 05-31-2011, 07:26 PM   #34
Jeeper
 
Mr_RPM's Avatar
 
Join Date: Dec 2010
Location: Howell Michigan
Posts: 784
Id personally step up to a mild supercharger system waaaaay before looking at a NOS kit.
or putting in a different engine.
Personally i feel my jeep has plenty of power, but only when its in its happy zone (power band) because im running 3.07s with 31s in a 3 speed auto tranny its slow, but 3-5k RPM its pretty good.
I think a proper re gear and a manual tranny would be a good way to go if i wanted some power. But for what i do, i don't need any more power.
__________________
2001 TJ 4.0L Automatic, D35/30, both hard and soft top, full doors,JKS quicker Disconnects, 31" discoverer ATR, American racing 767 offset 15" wheel. ProComp Genuine steel bumpers front and back. glass pack muffler, Rugged Ridge extended fender flares, 130w KC daylighters, motorcycle light for reverse lights. 86,000k miles (11-7-2012)
Mr_RPM is offline   Quote Quick Reply
Old 06-03-2011, 02:19 PM   #35
Jeeper
 
danieldlg_13's Avatar
 
Join Date: Sep 2009
Location: Houston
Posts: 1,012
Send a message via MSN to danieldlg_13 Send a message via Yahoo to danieldlg_13
Quote:
Originally Posted by Mr_RPM View Post
Id personally step up to a mild supercharger system waaaaay before looking at a NOS kit.
or putting in a different engine.
Personally i feel my jeep has plenty of power, but only when its in its happy zone (power band) because im running 3.07s with 31s in a 3 speed auto tranny its slow, but 3-5k RPM its pretty good.
I think a proper re gear and a manual tranny would be a good way to go if i wanted some power. But for what i do, i don't need any more power.
I'm geared the same, 3.07 and my 4.0 Auto is fine with the 33's its got on it. Sometimes I wish to go faster, like passing people on the freeway, but this keeps me from speeding. I would eventually regear and lock.
danieldlg_13 is offline   Quote Quick Reply
Old 06-03-2011, 05:22 PM   #36
Jeeper
 
Bigdog46's Avatar
 
Join Date: May 2011
Location: Cleveland, Georgia
Posts: 31
Improvisation at its best!
Bigdog46 is offline   Quote Quick Reply
Old 06-06-2011, 03:28 PM   #37
Jeeper
 
danieldlg_13's Avatar
 
Join Date: Sep 2009
Location: Houston
Posts: 1,012
Send a message via MSN to danieldlg_13 Send a message via Yahoo to danieldlg_13
What are some of the prices you can find on upgrades for increasing horsepower?
For example a simple CAI will cost you... and could give you ...horsepower and ... torque.
A supercharger...
danieldlg_13 is offline   Quote Quick Reply
Old 06-06-2011, 06:15 PM   #38
Jeeper
 
Join Date: May 2011
Posts: 317
Just to throw it out there Painless Performance makes a 62mm and 68mm throttle body for the 4.0L. They say It's good.
Hemi YJ is offline   Quote Quick Reply
Old 06-06-2011, 07:05 PM   #39
Jeeper
 
kboles89's Avatar
 
Join Date: Jan 2011
Location: elon, nc
Posts: 451
kboles89 is offline   Quote Quick Reply
Old 06-06-2011, 07:36 PM   #40
Jeeper
 
Join Date: May 2011
Posts: 317
That's awesome.
Hemi YJ is offline   Quote Quick Reply
Old 06-07-2011, 09:07 AM   #41
Jeeper
 
danieldlg_13's Avatar
 
Join Date: Sep 2009
Location: Houston
Posts: 1,012
Send a message via MSN to danieldlg_13 Send a message via Yahoo to danieldlg_13
Quote:
Originally Posted by kboles89 View Post
Best info ever!


50 Free HP
Very funny!
danieldlg_13 is offline   Quote Quick Reply
Old 06-07-2011, 10:24 PM   #42
Newb
 
Join Date: Jun 2011
Posts: 2
Newbie here...

So none of the familiar tricks (intake, exhaust, chip) are going to net any meaningful HP/torque improvements?
pinkrton is offline   Quote Quick Reply
Old 06-07-2011, 10:53 PM   #43
Jeeper
 
Join Date: May 2011
Posts: 317
Define meaningful?
Hemi YJ is offline   Quote Quick Reply
Old 06-08-2011, 10:16 AM   #44
Jeeper
 
danieldlg_13's Avatar
 
Join Date: Sep 2009
Location: Houston
Posts: 1,012
Send a message via MSN to danieldlg_13 Send a message via Yahoo to danieldlg_13
Quote:
Originally Posted by pinkrton View Post
Newbie here...

So none of the familiar tricks (intake, exhaust, chip) are going to net any meaningful HP/torque improvements?
You could gain HP and torque. Most people will tell you that regearing your Jeep could be the best start of helping you on your road to increasing your HP and torque, probably the most beneficial and affordable...

Regearing will not increase your horsepower and torque but it helps your engine to lower/match speed,horsepower,torque,rpm etc.
danieldlg_13 is offline   Quote Quick Reply
Old 06-08-2011, 11:26 AM   #45
Jeeper
 
rattycaddy's Avatar
 
Join Date: Nov 2010
Location: Hartland, WI
Posts: 76
I was also curious on the larger throttle body, my room mate has one on his S52 swapped E34 (BMW). There was a difference after it was swapped in but I don't know in the Jeep world if it would. Also does anyone have a link to build thread for a hemi TJ project?
rattycaddy is offline   Quote Quick Reply
Old 06-08-2011, 01:23 PM   #46
Jeeper
 
Join Date: May 2011
Posts: 317
I built a Hemi YJ. Don't know of a TJ thread. But I can try to help if you like.
Hemi YJ is offline   Quote Quick Reply
Old 06-08-2011, 02:32 PM   #47
Jeeper
 
rattycaddy's Avatar
 
Join Date: Nov 2010
Location: Hartland, WI
Posts: 76
I am more or less just wondering what is all needed such as trans, t case, wiring, ect. I know the mount need to be fabbed and cooling system and what not. Just wondering how everything else works with it. Does it also use the oem gauges and everything if so how does it connect?

I have does plenty of VW motor swaps but never on anything domestic. Not saying I'll do a Hemi swap but would be cool to see how it is done.
rattycaddy is offline   Quote Quick Reply
Old 06-08-2011, 02:37 PM   #48
Jeeper
 
Join Date: May 2011
Posts: 317
What kind of Jeep is yours? Year, engine, trans...
Hemi YJ is offline   Quote Quick Reply
Old 06-08-2011, 03:50 PM   #49
Jeeper
 
rattycaddy's Avatar
 
Join Date: Nov 2010
Location: Hartland, WI
Posts: 76
02 4L 5speed, new-ish to the Jeep thing don't know all of the codes like I do my VW's and BMW's
rattycaddy is offline   Quote Quick Reply
Old 06-08-2011, 04:36 PM   #50
Jeeper
 
Join Date: May 2011
Posts: 317
Of you just want to buy everything and have everything work and pass emissions you need a 2003-2008 motor and transmission. The motor can be a 5.7 or 6.1 from anything. The trans needs to be a 5-45RFE. It probably would be easiest to get motor and trans from same vehicle. Ran, Grand Cherokee... you can bolt up your 231 to it (I'd upgrade it to SYE, bigger shaft) or get a 241 from the Ram or what ever. You need a 2005 Ram computer. Before you get the computer call a dealership with the VIN and make sure it has no security on it. You also need to update the NVLD and fuel pump to a 2005 TJ. A buddy of mine paid $200.00 at a salvage yard for a 2005 TJ fuel tank and NVLD system. If you can't fab motor mounts Tera-Flex and Burnsville Offroad make them for TJ's. You can get a plug and play harness and your computer programmed at http://www.hotwireauto.com/. I have two harnesses from them. They are the best in the business. It's a purchase you won't regret. They also have a 1997 TJ on their site they put a Hemi in. You should check it out. I've heard the stock radiator is ok to use. You will need exhaust put on and if you go to a salvage yard get the auto shifter and cable for a TJ.
You can run a stick but unless you buy an entire Ram with a stick the price goes up quite a bit. Well that's the basics. Any more questions I'm here.
Hemi YJ is offline   Quote Quick Reply
Old 06-08-2011, 04:49 PM   #51
Jeeper
 
danieldlg_13's Avatar
 
Join Date: Sep 2009
Location: Houston
Posts: 1,012
Send a message via MSN to danieldlg_13 Send a message via Yahoo to danieldlg_13
Quote:
Originally Posted by Hemi YJ View Post
Of you just want to buy everything and have everything work and pass emissions you need a 2003-2008 motor and transmission. The motor can be a 5.7 or 6.1 from anything. The trans needs to be a 5-45RFE. It probably would be easiest to get motor and trans from same vehicle. Ran, Grand Cherokee... you can bolt up your 231 to it (I'd upgrade it to SYE, bigger shaft) or get a 241 from the Ram or what ever. You need a 2005 Ram computer. Before you get the computer call a dealership with the VIN and make sure it has no security on it. You also need to update the NVLD and fuel pump to a 2005 TJ. A buddy of mine paid $200.00 at a salvage yard for a 2005 TJ fuel tank and NVLD system. If you can't fab motor mounts Tera-Flex and Burnsville Offroad make them for TJ's. You can get a plug and play harness and your computer programmed at HotwireAuto - Fuel Injected Wiring Harnesses. I have two harnesses from them. They are the best in the business. It's a purchase you won't regret. They also have a 1997 TJ on their site they put a Hemi in. You should check it out. I've heard the stock radiator is ok to use. You will need exhaust put on and if you go to a salvage yard get the auto shifter and cable for a TJ.
You can run a stick but unless you buy an entire Ram with a stick the price goes up quite a bit. Well that's the basics. Any more questions I'm here.
So in its entirety, what would this setup cost and what numbers would this produce?
danieldlg_13 is offline   Quote Quick Reply
Old 06-08-2011, 05:13 PM   #52
Jeeper
 
Join Date: May 2011
Posts: 317
Quote:
Originally Posted by danieldlg_13

So in its entirety, what would this setup cost and what numbers would this produce?
There are a lot of factors to consider like what kind of deal you can get on a motor and trans. Or your fabrication skills. Or How much you upgrade.
But for a basic setup with no extra goodies a $3000.00 to $4500.00.
350hp
20mpg

You put an electric fan and Headers/bad ass exhaust intake and custom programming. $4500.00 to $6000.00.
450hp
20mpg

You can do it for less if you can weld/fabricate, wire your own harness, don't care it it will pass emissions or if your gauges work.$1500.00 to $2500.00. And still have
350hp
20mpg

I bought my first engine and trans with 30,000 miles for $1500.00. A year later when I did my next they wanted $4000.00 for ones with 100,000 miles. I ended up buying a wrecked 2006 Ram with 4,600 miles for $2500.00. So I sourced the motor, trans, case, fuel pump... a bunch from it and selling other parts. But you got to look and wait for a deal.
Hemi YJ is offline   Quote Quick Reply
Old 06-08-2011, 08:44 PM   #53
Jeeper
 
rattycaddy's Avatar
 
Join Date: Nov 2010
Location: Hartland, WI
Posts: 76
hmm very interesting and tempting some day. I also think an axle upgrade would be needed. Can't imagine a D35 would appreciate it. Sounds like a fun swap with plenty of parts to make it easy. Just one question, what would the NVLD system be?
rattycaddy is offline   Quote Quick Reply
Old 06-08-2011, 09:02 PM   #54
Jeeper
 
Join Date: May 2011
Posts: 317
It's the Natural Vacuum Leak Detection. You know how on newer vehicles if the gas cap isn't tight the check engine light comes on. NVLD system does that. It checks for fuel leaks.
Hemi YJ is offline   Quote Quick Reply
Old 06-08-2011, 09:04 PM   #55
Jeeper
 
Join Date: May 2011
Posts: 317
Forgot to mention. You are going to need a gas peddle from a Hemi vehicle. Hemi's are drive by wire. There's no throttle cable.
Hemi YJ is offline   Quote Quick Reply
Old 06-09-2011, 09:12 AM   #56
Jeeper
 
danieldlg_13's Avatar
 
Join Date: Sep 2009
Location: Houston
Posts: 1,012
Send a message via MSN to danieldlg_13 Send a message via Yahoo to danieldlg_13
That's not bad. Around $4000 for 350 HP, but you would need to do your own labor. So its safe to add anothoer $1500+ for labor? But you've only upgraded your engine, now you have to upgrade your driveline. You would have to add another $800 to do it yourself, or $2000 to have someone do it for you.

A Banks cold air intake will cost you $285 and the estimated HP is said to be 12 but at 4623rpm... that's a bit high. And this is something you can do yourself with simple tools and knowledge of mechanics.
danieldlg_13 is offline   Quote Quick Reply
Old 06-09-2011, 09:51 AM   #57
Jeeper
 
Join Date: May 2011
Posts: 317
As far as drivetrain you would need to upgrade shafts and axles. You can get away with the stock shafts and axles for awhile if you can control your lead foot long enough to save some cash. But if you forget or try showing of or something you will find out where your weakest link is and then the next and the next... you get the picture. Being that the computer controls the engine, trans and gas they are actually pretty mild as long as you aren't hammering down.
Hemi YJ is offline   Quote Quick Reply
Old 06-09-2011, 01:05 PM   #58
Jeeper
 
danieldlg_13's Avatar
 
Join Date: Sep 2009
Location: Houston
Posts: 1,012
Send a message via MSN to danieldlg_13 Send a message via Yahoo to danieldlg_13
All that HP, I'd be scared to really push it. You can snap something off reall quick.
danieldlg_13 is offline   Quote Quick Reply
Old 06-09-2011, 04:59 PM   #59
Jeeper
 
Join Date: May 2011
Posts: 317
What I'm saying is don't push it. Not till the rest is upgraded.
Hemi YJ is offline   Quote Quick Reply
Old 06-10-2011, 10:29 AM   #60
Jeeper
 
rattycaddy's Avatar
 
Join Date: Nov 2010
Location: Hartland, WI
Posts: 76
Last question for now, what did you run for a rear drive shaft? I am guessing the hemi motor and trans will push it back further with the t case connected? Also what about the front drive shaft?

rattycaddy is offline   Quote Quick Reply
Reply

Quick Reply
Message:
Options

Register Now

In order to be able to post messages on the Jeep Wrangler Forum forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.
User Name:
If you do not want to register, fill this field only and the name will be used as user name for your post.
Password
Please enter a password for your user account. Note that passwords are case-sensitive.
Password:
Confirm Password:
Email Address
Please enter a valid email address for yourself.
Email Address:

Log-in

Human Verification

In order to verify that you are a human and not a spam bot, please enter the answer into the following box below based on the instructions contained in the graphic.



Thread Tools

Posting Rules
You may post new threads
You may post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
VERY cool read about a Belgian's expedition through the Congo! Jerry Bransford Off-Topic 3 12-15-2010 02:12 AM
December issue of "Off Road Adventures". must read Wrangler1212 General Jeep Discussion 4 12-01-2010 11:50 AM
This is embarassing. How to read tire size? InvertChaos TJ General Discussion Forum 34 09-26-2010 11:18 AM



» Network Links
»Jeep Parts
» Featured Product

All times are GMT -5. The time now is 07:40 AM.



Jeep®, Wrangler, Liberty, Wagoneer, Cherokee, and Grand Cherokee are copyrighted and trademarked to Chrysler Motors LLC.
Wranglerforum.com is not in any way associated with the Chrysler Motors LLC