post #16 of Old 10-11-2011, 04:48 PM
justanotherjpr
Registered User
 
Join Date: Nov 2007
Posts: 6,336
Gas mileage lately?


Quote:
Originally Posted by Motorcharge View Post
So do you actually hear your thoughts in your head or is it just sort of a dull roar before you smash your face into your keyboard and just submit whatever dumb **** ended up on the page?
justanotherjpr is offline  
post #17 of Old 10-11-2011, 06:03 PM
dagr8tim
Web Wheeler
 
dagr8tim's Avatar
1997 XJ Cherokee 
 
Join Date: May 2008
Location: Galloway, Oh
Posts: 3,103
You used petroleum jelly on the o rings? Generally that's not a wise idea on rubber parts. The same reason you are not supposed to use it with condoms.

Everywhere I've read says to lube them with some 10w30.

Jeeping - The art of getting dirty & going broke while slowly heading nowhere, and taking all day to do it.

97 XJ SE - The War Wagon
98 TJ - Mall Crawler/Light Trail Rig
dagr8tim is offline  
post #18 of Old 10-11-2011, 08:25 PM
91wranglerwilly
Registered User
1991 YJ Wrangler 
 
Join Date: Oct 2010
Location: greenwood lake
Posts: 109
ok thanks for the help. im not entirerly sure thats the problem. i also havent sold my yj to buy this cherokee. so i was just doing a little perliminary back round work to see what i was getting in to
91wranglerwilly is offline  
post #19 of Old 10-12-2011, 03:50 PM Thread Starter
dukie564
Web Wheeler
 
dukie564's Avatar
1995 XJ Cherokee 
 
Join Date: Jun 2008
Location: Aberdeen
Posts: 2,832
Quote:
Originally Posted by justanotherjpr View Post
Gas mileage lately?
18.75mpg average with 235/75R15 M/T tires, hacked front facia, and 300# of tools in the back....not too bad for a 248,000 mile Cherokee.

1995 XJ Cherokee Sport
4.5" Homebrew Lift, 4.0L HO I-6, AX-15, NP231, D30(Open)/C8.25(Locked)
33x12.5 Mickey Thompson Baja MTZ Tires, 309,000 mi and runnin' strong
http://www.jeepforum.com/forum/f22/p...rt-xj-1297118/
dukie564 is offline  
post #20 of Old 10-17-2011, 08:29 PM
jimmy21669
Registered User
1998 XJ Cherokee 
 
Join Date: Aug 2008
Location: Hagerstown
Posts: 182
I did this back in May. I was driving back and forth from MD to OH and needed the MPG.

I drive a 94 XJ 4.0 5 spd. with 160K on the clock.

My last trip I averaged 25.75 MPG. I have pics of the trip odometer and gas pump to prove it!
jimmy21669 is offline  
post #21 of Old 10-17-2011, 09:05 PM
jxpeej
Registered User
 
Join Date: Feb 2011
Location: apple valley
Posts: 18
I think I'm getting 13.8......I might have to try this.
jxpeej is offline  
post #22 of Old 11-25-2011, 03:07 PM
akdanny87
Registered User
 
Join Date: Nov 2011
Location: Anchorage
Posts: 1
Hey guys, I just joined this forum to look for advice on this exact issue....I am quite the novice mechanic but I didnt want to take it to the shop. I am spewing gas from my injectors right now....what is the fire risk with this?
akdanny87 is offline  
post #23 of Old 11-25-2011, 03:26 PM Thread Starter
dukie564
Web Wheeler
 
dukie564's Avatar
1995 XJ Cherokee 
 
Join Date: Jun 2008
Location: Aberdeen
Posts: 2,832
HUGE. Seriously injector o-rings are cheap as hell from your local auto parts store. Fel-Pro ES70599 (also listed as FPES70599).

My writeup shows exactly how to replace them - should take all of about 15 minutes with a basic socket set.

1995 XJ Cherokee Sport
4.5" Homebrew Lift, 4.0L HO I-6, AX-15, NP231, D30(Open)/C8.25(Locked)
33x12.5 Mickey Thompson Baja MTZ Tires, 309,000 mi and runnin' strong
http://www.jeepforum.com/forum/f22/p...rt-xj-1297118/
dukie564 is offline  
post #24 of Old 12-09-2011, 05:08 PM
goolsbayjeep
Registered User
2001 XJ Cherokee 
 
Join Date: Feb 2011
Location: tulsa
Posts: 208
does anyone know what neon injectors would work with a 2001 cherokee 4.0L
goolsbayjeep is offline  
post #25 of Old 12-09-2011, 08:39 PM
NJXJ91
Registered User
2001 XJ Cherokee 
 
Join Date: Jan 2010
Location: South Jersey
Posts: 1,030
Thanks man this is perfect. I plan on doing this eventually with these: http://www.precisionautoinjectors.co...2&categoryId=3
NJXJ91 is offline  
post #26 of Old 12-09-2011, 10:36 PM
90xjlimited
Registered User
1990 XJ Cherokee 
 
Join Date: Oct 2010
Location: atlanta
Posts: 81
Quote:
Originally Posted by dagr8tim View Post
You used petroleum jelly on the o rings? Generally that's not a wise idea on rubber parts. The same reason you are not supposed to use it with condoms.

Everywhere I've read says to lube them with some 10w30.
Gasoline is petroleum based, makes sense to use the jelly. Fuel system o-rings are petro resistant.

I installed the Ford 5.0 injectors on my '90 about a month ago. I averaged 19.7 mpg on a trip from Atlanta to Savannah, about 250 miles. An average mph of 75-80 and my cracked exhaust manifold didn't help the mpg's at all though.

Great write up.

90 XJ-RC 3 in. Series II-31x10.5 Grabber AT2's-Soft 8's-Leigh's 60mm TB-K&N Rusty's tube-5.0 injectors
90xjlimited is offline  
post #27 of Old 12-10-2011, 01:12 PM
goolsbayjeep
Registered User
2001 XJ Cherokee 
 
Join Date: Feb 2011
Location: tulsa
Posts: 208
Quote:
Originally Posted by NJXJ91 View Post
Thanks man this is perfect. I plan on doing this eventually with these: http://www.precisionautoinjectors.co...2&categoryId=3
try these I have heard great things and they are a heck of a lot cheaper

http://www.fiveomotorsport.com/bosch...,-dodge-dakota
they also have 24lb and 27lb injectors
goolsbayjeep is offline  
post #28 of Old 12-11-2011, 08:44 AM Thread Starter
dukie564
Web Wheeler
 
dukie564's Avatar
1995 XJ Cherokee 
 
Join Date: Jun 2008
Location: Aberdeen
Posts: 2,832
Quote:
Originally Posted by goolsbayjeep View Post
does anyone know what neon injectors would work with a 2001 cherokee 4.0L
784s


Quote:
Originally Posted by goolsbayjeep View Post
try these I have heard great things and they are a heck of a lot cheaper

http://www.fiveomotorsport.com/bosch...,-dodge-dakota
they also have 24lb and 27lb injectors
Yes those will work


Here's a pretty complete list of options for anyone interested, as well as what is needed to make them work in some cases


1995 XJ Cherokee Sport
4.5" Homebrew Lift, 4.0L HO I-6, AX-15, NP231, D30(Open)/C8.25(Locked)
33x12.5 Mickey Thompson Baja MTZ Tires, 309,000 mi and runnin' strong
http://www.jeepforum.com/forum/f22/p...rt-xj-1297118/
dukie564 is offline  
post #29 of Old 12-24-2011, 10:53 AM
d50
Registered User
 
Join Date: Dec 2011
Location: boise
Posts: 2
where do you get new filters, o-rings, and pintle caps for the 703's? and what make year and model do you ask for? i found a set at the junkyard but i dont remember what year the neon was. thanks.
d50 is offline  
post #30 of Old 12-24-2011, 01:42 PM Thread Starter
dukie564
Web Wheeler
 
dukie564's Avatar
1995 XJ Cherokee 
 
Join Date: Jun 2008
Location: Aberdeen
Posts: 2,832
i order my rebuild kits from a guy on bonanza - I think his username is turboparts
[edit: i was right - http://www.bonanza.com/listings/BOSC...-CYL/42334375]

The 703s are usually in 95-97 neons, but it's hit or miss. You need to make sure the number on the side is correct.

This is the engine you're looking for (or at least the one I've found them in)

1995 XJ Cherokee Sport
4.5" Homebrew Lift, 4.0L HO I-6, AX-15, NP231, D30(Open)/C8.25(Locked)
33x12.5 Mickey Thompson Baja MTZ Tires, 309,000 mi and runnin' strong
http://www.jeepforum.com/forum/f22/p...rt-xj-1297118/
dukie564 is offline  
Reply


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
D30 differential cover swap writeup TheRifleman XJ Cherokee Technical Forum 50 01-05-2012 07:47 PM
89 injector swap evilbill XJ Cherokee Technical Forum 2 10-21-2010 05:46 AM
injector swap. XJ98beast XJ Cherokee Technical Forum 0 03-01-2010 08:03 AM
injector swap boring96xj XJ Cherokee Technical Forum 1 08-18-2006 09:35 AM
Auto swap to Manual Writeup? Jeepin_XJ_101 XJ Cherokee Technical Forum 3 01-15-2006 02:35 PM

Posting Rules  
You may not post new threads
You may not 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