I need a new engine! - Jeep Wrangler Forum
Jeep Wrangler Forum

Go Back   Jeep Wrangler Forum > TJ Jeep Wrangler Forum > TJ Tech Forum

Join Wrangler Forum Today


Reply
 
Thread Tools

Please support our sponsors and let them know you heard about them on WranglerForum.com
Old 02-15-2014, 07:19 AM   #1
Jeeper
 
CPRJeeper's Avatar
 
Join Date: Aug 2013
Posts: 105
Cool I need a new engine!

Hey everyone, so on my way back home one day my engine locked up, long story short, i need a new engine. 4.0L 98 TJ. Now instead of just going back to the regular I6, i see this as a possibility to upgrade. I don't know too much about engines, but I do know a v8 conversion is out of my price range. Someone mentioned a stroker I6 is really good in the jeeps. What is a stroker exactly? same thing with long block? are there other engine types that I'm missing that owuld be good in a jeep? and why are they different from each other? also what brands should I be looking at? I kind of want to stay under $4 grand

CPRJeeper is offline   Quote Quick Reply
Old 02-15-2014, 07:44 AM   #2
Jeeper
 
beaureed445's Avatar
 
Join Date: Sep 2012
Location: Oklahoma
Posts: 464
Check out ATK. They build a 4.7 liter to replace the 4.0. Also, Golen.

__________________
'03 TJ/ 4" Currie Lift/ Bilstein 5100's/ 35x12.50 BFG KM2's/ G2 Dana 44's/ 4.56 gears/ Eaton Lockers/ Anti-Rock/ CurrectLync/ MetalCloak Track Bars
beaureed445 is offline   Quote Quick Reply
Old 02-15-2014, 09:27 AM   #3
Jeeper
 
jeepwayoflife's Avatar
 
Join Date: Nov 2011
Location: California
Posts: 3,068
Most strokers sold increase the displacement with piston boring to give you more power and better throttle response, then the connecting rods are lengthened for more leverage and many internal parts are upgraded to more high performance parts for more power. I believe some use modified cams for more power as well. You are left with an engine the same size that puts out more power (270-350hp vs 200hp) yet retains about the same throttle response.
__________________
--------------------------------------------------------
jeepwayoflife is offline   Quote Quick Reply
Old 02-15-2014, 10:22 AM   #4
Jeeper
 
SlightlyMoto's Avatar
 
Join Date: Jul 2013
Posts: 165
Craigslist buy a rotted running one... Part out the rest..Or go big
SlightlyMoto is online now   Quote Quick Reply
Old 02-15-2014, 01:23 PM   #5
Jeeper
 
mfarr75's Avatar
 
Join Date: Nov 2012
Posts: 153
Out of curiosity could you tell us some more about how the engine just locked up. I am wondering how and why that would happen. Any warning signs or did it just for no reason you can tell seize?
mfarr75 is offline   Quote Quick Reply
Old 02-15-2014, 01:46 PM   #6
Jeeper
 
Junky_One's Avatar
 
Join Date: Sep 2013
Location: Highwood
Posts: 496
A stroker 4.7 is basically your 4.0 with just what the name implies, it's stroked. That means that the total distance from top to bottom of piston travel is increased. It's the difference between what builders refer to as 'square' being under square or over square. Square referring to the ratio between piston/bore diameter versus the stroke length. When a motor is stroked you often see higher torque outputs. Can't remember which is which (under/over square). And when a motor is anti stroked you see hp gains. It's like the difference between a 350 Chevy motor being stroked with a 400 crank that gives you a 383 super torquey and some what sluggish in comparison to a 400 Chevy motor with a 350 crank that anti strokes it to a 377 that has gobs of rpm and all the horsepower the 383 wants.
__________________
Jeeps never get stuck or broke. Just parked in odd places for an indeterminate length of time.
Junky_One is offline   Quote Quick Reply
Old 02-15-2014, 01:49 PM   #7
Jeeper
 
Junky_One's Avatar
 
Join Date: Sep 2013
Location: Highwood
Posts: 496
And yes I believe you can find a 4.7 for around 3 grand, and if you don't want a used motor see what kind of prices you can get to have one built. If you bought a used motor for 500 bucks that still runs I can't see it costing more then 2100-2800 dollars to build in any setting here in the states.
__________________
Jeeps never get stuck or broke. Just parked in odd places for an indeterminate length of time.
Junky_One is offline   Quote Quick Reply
Old 02-15-2014, 04:44 PM   #8
Jeeper
 
CPRJeeper's Avatar
 
Join Date: Aug 2013
Posts: 105
the engine quit because the oil pump quit and it ran without oil, without my knowledge because the oil guage wasnt working. It's in the shop and I wont get it back until friday. Theyre putting in an ATK 4.0 I6 in and needless to say i will get the oil gauge working as soon as I get it back
CPRJeeper is offline   Quote Quick Reply
Old 02-15-2014, 06:32 PM   #9
Newb
 
oldjpman's Avatar
 
Join Date: Oct 2011
Location: Crosby Tx.
Posts: 1
Research, research, research. Type in stroker kit on the internet and talk to your local machine shop. It cost me about $700 for a complete rebuild kit for the block minus the crank. It cost me another 400 dollars to have the block decked, I had them install the new cam bearings , bored 30 over, milled the head, and some other head work done . It was just a standard rebuild and after I work out the bugs it runs great.

The reason I say research is because 1 these kits get very expensive and 2 because once you go 60 over and you screw that up you gotta start looking for a new block. I know you can go with one of the kits that require 40 over but what's the point. And also you need to consider once you go with a higher compression motor you can only run high octane fuel.

Don't get me wrong I'm all about the big stroker 6 with a supercharger & yeah you need to look that up too. I believe you're looking at about 400 hp when it's all said and done but you're also looking at enough money that you can drop in a v8. Your question is about the same as the stick or automatic trans. question. You need to figure that one out on your own because it's all about your preference for your situation. If its not a daily driver stroke it like you never stroked it before and save up for the supercharger. That's my two cents.

oldjpman is offline   Quote Quick Reply
Reply

Tags
4.0 , engine , engine swap , inline 6 , new engine

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



logo carid shop wrangler parts carid fender flares custom wheels store avs deflectors at carid

» Network Links
»Jeep Parts
» Featured Product

All times are GMT -5. The time now is 04:05 PM.



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