Gas Mileage - Page 2 - JeepForum.com
Reply
 
LinkBack Thread Tools
post #16 of 20 Old 07-14-2007, 07:23 AM
collkid
Registered User
2000 XJ Cherokee 
 
Join Date: Apr 2007
Location: Highlands Ranch, Colorado
Posts: 1,845
Quote:
Originally Posted by gearheadjlm
I'm wondering if this engine properly built with a turbo would do better....

Turbo is only going to make things worse trust me....

Forcing more air into the engine will force more Gas to be used and burned.

There is no way a turbo can help your MPG

collkid is offline  
Sponsored Links
Advertisement
 
post #17 of 20 Old 07-18-2007, 08:39 PM
michiganmaveric
Got Beer?
 
michiganmaveric's Avatar
2011 JK Wrangler 
 
Join Date: Aug 2004
Location: Southeast Michigan
Posts: 2,807
Here's a good article to read about gas milage. It basically says all the mod's are not worth it. Read the entire article. The tests were done in a TJ or XJ model Jeep. Very interesting stuff.


http://www.omninerd.com/2006/07/16/articles/57

Previous Jeeps: 84 CJ7 (A True Jeep), 2000 XJ (163,000 Miles/Totaled (Pictures of wrecked Jeep in gallery)), 2004 WJ (parting out die to major electrical issues)

If you don't have time to do it right the first time, how do you have time to do it over.

Lifetime member #13

www.militaryjeepers.com lifetime member/airforce26yrs

2011 Tango/Mango JKU
michiganmaveric is offline  
post #18 of 20 Old 07-18-2007, 08:45 PM
michiganmaveric
Got Beer?
 
michiganmaveric's Avatar
2011 JK Wrangler 
 
Join Date: Aug 2004
Location: Southeast Michigan
Posts: 2,807
Quote:
Originally Posted by collkid
Turbo is only going to make things worse trust me....

Forcing more air into the engine will force more Gas to be used and burned.

There is no way a turbo can help your MPG

I believe that turbo's do help in the gas milage department, but it would take years and years to recoupe the $3,000-$4,000 cost of modifing your engine.

Previous Jeeps: 84 CJ7 (A True Jeep), 2000 XJ (163,000 Miles/Totaled (Pictures of wrecked Jeep in gallery)), 2004 WJ (parting out die to major electrical issues)

If you don't have time to do it right the first time, how do you have time to do it over.

Lifetime member #13

www.militaryjeepers.com lifetime member/airforce26yrs

2011 Tango/Mango JKU
michiganmaveric is offline  
post #19 of 20 Old 07-19-2007, 09:03 AM
Happy Joe
Registered User
1985 CJ7 
 
Join Date: Jun 2007
Location: Colorado
Posts: 2,365
No matter what you do you are going to have to be able to at least modify the oxygen sensor output to the computer. If not it will readjust the engine back as close to the factory settings as possible or it will go into poor mileage limp home mode.
Once you get a box that will let you lean out the engine; your options expand, water, steam and vapor injection are proven to increase mileage and are relatively easy to home brew at little cost. (I got a 24% improvement (daily driving) with simple water injection (think large hookah) during the last gasoline hoax (shortage) but I had to remember to refill the water reservoir every time that I got gasoline (It would not run without the water). Resign yourself to building/experimenting yourself, most if not all of the mileage increasing devices on the market are overpriced frauds, IMO.
BTW, all mods of this kind are illegal and will cause your engine to fail at least the visual portions of a pollution test.
Enjoy!
Happy Joe is offline  
post #20 of 20 Old 07-19-2007, 09:35 AM
ryan89crx
Registered User
 
ryan89crx's Avatar
1992 YJ Wrangler 
 
Join Date: Jul 2007
Location: Tri-Cities, WA
Posts: 36
Quote:
Originally Posted by michiganmaveric
I believe that turbo's do help in the gas milage department, but it would take years and years to recoupe the $3,000-$4,000 cost of modifing your engine.
I believe you are thinking Supercharger. Most guys the run SC'd Hondas see 1-2mpg better mileage due to the fact that you have more power to get you going and there isnt so much load on the motor.

Personally, I lost about 2-3mpg city driving and 3-4mpg highway driving after turbocharging my Honda. And that was with a fully programmable ECU and custom tuning to lean out the partial throttle cruising. I don't see that being any different with any sort of chassis, but real world results speak louder than assumptions.
ryan89crx 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



Similar Threads
Thread Thread Starter Jeep Forums Replies Last Post
bfg mt km mileage and tsl radial mileage epeck87 Tires & Wheels 1 03-29-2009 08:53 AM
LTB Mileage SkyChi Tires & Wheels 7 10-27-2008 07:10 PM
4.10/4.56 gas mileage? morningwood1429 Engines & Drivetrain 18 02-08-2008 10:17 PM
AT vs/MT mileage? terrible Tires & Wheels 3 04-02-2006 01:00 PM
Gas mileage JeepnTX Engines & Drivetrain 3 03-07-2003 03:45 PM

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