2.5L more HP? - JeepForum.com

 
LinkBack Thread Tools
post #1 of 10 Old 02-02-2013, 10:29 AM Thread Starter
OliverTwist
Registered User
1992 YJ Wrangler 
 
Join Date: Nov 2012
Location: Clarkston
Posts: 4
2.5L more HP?

Hello, I have a 92 YJ with the 2.5L and was doing some reading an saw that if I add a a throttle body and spacer off a cherokee and and a cold air intake I could boost up the HP a tad. So what would I look for in the parts so I know they would work

OliverTwist is offline  
Sponsored Links
Advertisement
 
post #2 of 10 Old 02-02-2013, 11:09 AM
Que89YJ
Web Wheeler
1989 YJ Wrangler 
 
Join Date: Apr 2008
Location: Detroit
Posts: 21,698
Try this web site:
http://www.4bangerjp.com/forums/

Everything you wanted to know about getting more HP out of a 2.5L
Que89YJ is offline  
post #3 of 10 Old 02-02-2013, 02:50 PM
Jay-P
Registered User
1992 YJ Wrangler 
 
Join Date: Aug 2002
Location: Winnipeg, MB, Canada
Posts: 290
Put your money towards a regear...

But if you must... a 4.0 tb is a good idea, i personally wouldnt bother with a spacer, i have one and felt no difference. Add a free flowing exhaust and thats it. I wouldnt bother with a header. You have to watch that you dont shift the power band too high in the rpm range. Having to rev the crap out the the 2.5 to get those 5 added hp doesnt make any sense in a YJ.

1992 YJ + 2012 JKUR
Jay-P is offline  
post #4 of 10 Old 02-02-2013, 03:30 PM
Mark05059
Registered User
1989 YJ Wrangler 
 
Join Date: Mar 2009
Location: quechee Vermont
Posts: 4,699
add 4 more cyls

1998 ZJ 5.2 Auto

1989 Wrangler Black Bone Stock 2.5l 5spd
/l , [____],
|---L--[]lllllll[]-
()_) ()_)==O=)_)
Mark05059 is offline  
post #5 of 10 Old 02-02-2013, 04:41 PM
ashland82391
Out of money yet...Yup!
 
ashland82391's Avatar
1993 YJ Wrangler 
 
Join Date: Sep 2011
Location: Chandler
Posts: 7,878
ashland82391 is offline  
post #6 of 10 Old 02-02-2013, 06:37 PM
Xpress
Registered User
1996 ZJ 
 
Join Date: Dec 2010
Location: The Great Big Box
Posts: 5,927
Garage
Not a whole lot can be done, but what can be done has to be done altogether to increase power output. Not one single component or upgrade will yield a lot of power. The simplest way to get 5-10hp (or rather gain it back) is to go with an electric fan rather than use the factory steel fan. That's the biggest HP gain, unfortunately. The most I've seen someone get out of their 2.5L is about 40hp, but that was with close to a thousand dollars in components. For about $1500 you could swap in an entirely new driveline and be done with the 2.5L.

Or you can get used to driving a 4 cylinder powered brick. It has enough guts to mosey along at 65mph, even on stock gears with slightly bigger tires. Too big a tire will eat up your engines power really quick.

All about that unibody life.
Xpress is offline  
post #7 of 10 Old 02-02-2013, 06:48 PM
Flood
Registered User
2004 TJ Wrangler 
 
Join Date: Sep 2009
Location: Vancouver, BC, Canada
Posts: 77
I got more HP by selling it and buying a JK ....But seriously consider re-gearing since your on 33's. That was my plan, but I has to sell it, no room for both.

2004 TJ Rubicon: Khaki, 2 inch BDS on 31's.
2013 JKU Sahara: 6spd, Billet Metallic (Family Hauler/Mall Crawler for now...)
1994 YJ: Blue, 4cyl, 3.5 lift, 31's - Sold
Flood is offline  
post #8 of 10 Old 02-02-2013, 06:51 PM
flcracker
Registered User
1992 YJ Wrangler 
 
Join Date: Jun 2012
Location: Naples
Posts: 889
I went with an electric fan to free up a little power but I am not sure how much power I gained.... seeing some improvement in MPG though so I guess it helped a little....

Not the sharpest bulb in the box....

My Jeep is possessed with the goal of making me lose my religion....
flcracker is offline  
post #9 of 10 Old 02-03-2013, 01:36 AM
nembudonna
Registered User
1990 YJ Wrangler 
 
Join Date: Feb 2011
Location: northwest
Posts: 935
It is what it is and that's all that it is. Save your money and be glad that it runs good.
nembudonna is offline  
post #10 of 10 Old 02-03-2013, 04:47 AM
91BoD
Registered User
1991 YJ Wrangler 
 
Join Date: Apr 2010
Location: Marysville
Posts: 639
You need to increase displacement or rpm. Not much else is very effective as others have mentioned.
91BoD is offline  
Reply

Quick Reply
Message:
Options

Register Now



In order to be able to post messages on the JeepForum.com forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.

User Name:
Password
Please enter a password for your user account. Note that passwords are case-sensitive.

Password:


Confirm Password:
Email Address
Please enter a valid e-mail address for yourself.



Email Address:
OR

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.




Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page



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 On
Refbacks are On

 
For the best viewing experience please update your browser to Google Chrome