NAXJA Forums -::- North American XJ Association  

Go Back   NAXJA Forums -::- North American XJ Association > NAXJA Unibody Jeep Technical Forums > Jeep Cherokee XJ (1984 - 2001) > Modified Tech Discussion
HOME Member FAQ Sponsor Info Rules Bylaws E-Mail

Modified Tech Discussion Forum for Tech related discussion for Modified XJ's and MJ's.

Reply
 
Thread Tools Display Modes
  #1  
Old February 28th, 2012, 11:37
kenny811's Avatar
kenny811 kenny811 is offline
NAXJA Member
 
Join Date: Apr 2007
Location: Gresham, OR
Posts: 1,448
Injector Swap

I have a set 5.0 ( im pretty sure 19 LBS ) in a 89 renix. Can they be swapped into a 93 HO motor? Is there a range or limit for this swap?

Thanks
Kenny
Reply With Quote
  #2  
Old February 28th, 2012, 14:47
gradon's Avatar
gradon gradon is offline
NAXJA Forum User
 
Join Date: May 2006
Location: DC
Posts: 3,115
Re: Injector Swap

Those Ford yellows are rated 19#@39psi and the the brown top injectors in your '93 are rated 21#@39psi. I'm sure the pcm can adapt to use 10% smaller injectors while driving in closed loop and part throttle below 3Krpm, but when it goes to OL during >75% throttle input those injectors won't give enough fuel(lean) unless you have a map adjuster to bump up the voltage some.
Reply With Quote
  #3  
Old February 28th, 2012, 15:25
kenny811's Avatar
kenny811 kenny811 is offline
NAXJA Member
 
Join Date: Apr 2007
Location: Gresham, OR
Posts: 1,448
Re: Injector Swap

They have about 400 miles on them ( the yellow ones ) So I need to find a set of 21#... Thanks for the input.
Reply With Quote
  #4  
Old February 28th, 2012, 17:01
Tacedaddy's Avatar
Tacedaddy Tacedaddy is offline
NAXJA Forum User
 
Join Date: Sep 2011
Location: Shenandoah valley
Posts: 552
Re: Injector Swap

edit nvm had to re-read
Reply With Quote
  #5  
Old February 28th, 2012, 18:02
blubullett's Avatar
blubullett blubullett is offline
NAXJA Forum User
 
Join Date: Jan 2010
Location: Modesto CA
Posts: 406
Re: Injector Swap

I have them in my 95 with no problems. No spark knock or anything. I even passed CA smog with them in so it wasn't running lean in normal driving conditions. I did just add the upgraded pressure regulator that is recomended for use with them and it didn't seem to make any difference.
Reply With Quote
Reply


Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools
Display Modes

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

Forum Jump

Similar Threads
Thread Thread Starter Forum Replies Last Post
Injector Swap Question bdenglund Jeep Street and Performance 8 January 27th, 2012 19:31
injector swap phillyxj570 Modified Tech Discussion 4 September 4th, 2010 14:26
injector swap questions CromeY90 OEM Tech Discussion 50 February 14th, 2010 22:08
injector swap cmr4by4 OEM Tech Discussion 4 January 22nd, 2005 22:25
Issue after 5.0 injector swap... sintax Modified Tech Discussion 13 April 3rd, 2004 14:31


All times are GMT -7. The time now is 14:57.


Powered by vBulletin® Version 3.8.9
Copyright ©2000 - 2017, vBulletin Solutions, Inc.
NAXJA and NAXJA logo's Copyright NAXJA. All content/images Copyright NAXJA 1999-2014