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Unread 01-12-2010, 12:29 AM   #1
drprunty
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Join Date: Jul 2009
Location: Washington
Posts: 29
Upgrade injectors

Ive been reading a lot on the upgrade of injectors for the 4.0 engines, using Dodge neon or mustang injectors. I have an 89 Renix xj 4.0 no mods just stock trim. Ive done searches but can seem to get a clear picture on what will fit and what wont, so far all I understand is that I should be using 19lb inj. Can someone give me that clear picture as to what years of Neons and Mustangs with compatible injectors with part numbers that I can use.? Im leaning toward the Neon injectors but any straight info would be awesome.


Thks

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Unread 01-12-2010, 09:26 AM   #2
nrpalmer32
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1987 XJ Cherokee 
 
Join Date: Mar 2007
Location: Milwaukie, Oregon
Posts: 1,511
I purchased a rebuilt set on eBay. This is actually the set that I purchased about a year ago and installed them in late spring '09. They seem to run smoother and have a better idle. Plus its nice to get rid of the troublesome 3 piece design. I would recommend them to anyone. They are completely rebuilt and all tested.
* Fuel Injectors 19lb Design III 3 Ford Mustang TPI BMW:eBay Motors (item 280448474693 end time Jan-17-10 20:43:12 PST)
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Unread 01-12-2010, 09:32 AM   #3
leftlanetruckin
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I also run their injectors. Good value and smoothed out the idle on my junk.

Martin
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1998 XJ on 37's.JK Rubi axles with chromo shafts and ctm's, 4:1 transfer case, etc etc etc.The Cherylkee....
2003 Range Rover HSE, 4.4 Quad Cam.
1998 Range Rover 4.6 HSE
2000 4.7 4WD WJ with a rebuilt motor.
4.3/700r4/new frame buildup (YJ)....
http://www.jeepforum.com/forum/f12/swap-offically-underway-324622/

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Minutes to gain the knowledge from the internet, and quote it just as freely.
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Unread 01-12-2010, 09:38 AM   #4
98muddyjeep
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you get better spray and air mixture due to the 4 holes in these injectors as compaired to the one or two holes in jeep injectors,which will give better proformance.
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Unread 01-13-2010, 03:37 PM   #5
painjectors
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Those are my injectors you're running!

Pretty much any year up to 1997 I believe had the same connector that you'll be looking for and if it's a year before 94 make sure you check the end of the injector for the four hole nozzle. You want the four hole versions of the injectors when it comes to Fords. If you go with a Dodge injector there are a couple that will fit and the Denso injectors that are in some Dodges run really well with even a single pintle nozzle. It really comes to down the model number. Ford Mustang injectors had wide spray patterns and that's what made them such good replacements. There are some 4 hole nozzles that have narrow streams, angled streams, or too wide streams.
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[URL="http://www.jeepforum.com/forum/f43/precision-auto-injectors-august-special-1090634/"]AUGUST JEEP PROMOTIONAL PRICING IN THIS THREAD![/URL]

Full line of upgrade fuel injectors for all fuel injected Jeep models.

[URL="http://www.youtube.com/watch?v=WIhkGBNIpn8"]YouTube Video showing upgrade 87-95 Injectors[/URL]
[URL="http://www.youtube.com/watch?v=8imS40hheTw"]Upgrade 96-98 Injectors[/URL]
[URL="http://www.youtube.com/watch?v=bHf-6ohkgbA"]99-04 Jeep Injectors vs 4 Hole![/URL]

[URL="http://www.precisionautoinjectors.com"]Website[/URL]

Use coupon code "jeep" for 10% off

PM with any questions or
email: [email]precisionautoinjectors@yahoo.com[/email]
phone: 407-536-4509

Installed my injectors? Write a review!
[URL="http://www.jeepforum.com/forum/f224/precision-auto-injectors-1987-1995-4-0l-947865/"]87-95 Fuel Injector Review on Jeepforum.com[/URL]
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Unread 01-13-2010, 05:13 PM   #6
leftlanetruckin
XJ on 37's
 
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1998 XJ Cherokee 
 
Join Date: Jul 2006
Location: missouri via blackpool,lancs.
Posts: 10,606
Quote:
Originally Posted by painjectors View Post
Those are my injectors you're running!

Pretty much any year up to 1997 I believe had the same connector that you'll be looking for and if it's a year before 94 make sure you check the end of the injector for the four hole nozzle. You want the four hole versions of the injectors when it comes to Fords. If you go with a Dodge injector there are a couple that will fit and the Denso injectors that are in some Dodges run really well with even a single pintle nozzle. It really comes to down the model number. Ford Mustang injectors had wide spray patterns and that's what made them such good replacements. There are some 4 hole nozzles that have narrow streams, angled streams, or too wide streams.
I got a set from your website @1.5yrs ago, and love them
My junk is a 98, and they smoothed out the cosiderably.

Martin
__________________
1998 XJ on 37's.JK Rubi axles with chromo shafts and ctm's, 4:1 transfer case, etc etc etc.The Cherylkee....
2003 Range Rover HSE, 4.4 Quad Cam.
1998 Range Rover 4.6 HSE
2000 4.7 4WD WJ with a rebuilt motor.
4.3/700r4/new frame buildup (YJ)....
http://www.jeepforum.com/forum/showthread.php?t=324622

Years to gain the hands on experience, and offer it freely.
Minutes to gain the knowledge from the internet, and quote it just as freely.
Choose wisely!
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Unread 01-13-2010, 10:55 PM   #7
nrpalmer32
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1987 XJ Cherokee 
 
Join Date: Mar 2007
Location: Milwaukie, Oregon
Posts: 1,511
Quote:
Originally Posted by painjectors View Post
Those are my injectors you're running!

Pretty much any year up to 1997 I believe had the same connector that you'll be looking for and if it's a year before 94 make sure you check the end of the injector for the four hole nozzle. You want the four hole versions of the injectors when it comes to Fords. If you go with a Dodge injector there are a couple that will fit and the Denso injectors that are in some Dodges run really well with even a single pintle nozzle. It really comes to down the model number. Ford Mustang injectors had wide spray patterns and that's what made them such good replacements. There are some 4 hole nozzles that have narrow streams, angled streams, or too wide streams.
Thats funny! Well hopefully you get some more business lol They are great. I am having an o-ring leak now I think but that seems normal for my Heep.
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Unread 01-14-2010, 06:08 AM   #8
cruiser54
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I just ordered a set last night at 7 PM their time for $89.95 and they have already shipped. I'm a little spooked by the factory injectors which can leak and cause an engine fire. The video posted by painjectors is kinda interesting. I'll ost back after installation and road test.
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Unread 01-14-2010, 01:40 PM   #9
painjectors
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Quote:
Originally Posted by nrpalmer32 View Post
Thats funny! Well hopefully you get some more business lol They are great. I am having an o-ring leak now I think but that seems normal for my Heep.
Sure it's an o-ring leaking?

It's very common for them to leak where the metal connector meets the metal portion of the injector body. The o-rings don't leak if you've never taken them out and caused physical damage to them.
__________________
[URL="http://www.jeepforum.com/forum/f43/precision-auto-injectors-august-special-1090634/"]AUGUST JEEP PROMOTIONAL PRICING IN THIS THREAD![/URL]

Full line of upgrade fuel injectors for all fuel injected Jeep models.

[URL="http://www.youtube.com/watch?v=WIhkGBNIpn8"]YouTube Video showing upgrade 87-95 Injectors[/URL]
[URL="http://www.youtube.com/watch?v=8imS40hheTw"]Upgrade 96-98 Injectors[/URL]
[URL="http://www.youtube.com/watch?v=bHf-6ohkgbA"]99-04 Jeep Injectors vs 4 Hole![/URL]

[URL="http://www.precisionautoinjectors.com"]Website[/URL]

Use coupon code "jeep" for 10% off

PM with any questions or
email: [email]precisionautoinjectors@yahoo.com[/email]
phone: 407-536-4509

Installed my injectors? Write a review!
[URL="http://www.jeepforum.com/forum/f224/precision-auto-injectors-1987-1995-4-0l-947865/"]87-95 Fuel Injector Review on Jeepforum.com[/URL]
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Unread 01-15-2010, 12:22 AM   #10
ckisela
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1994 XJ Cherokee 
 
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Location: Sacramento
Posts: 240
Besides the idle fix do you notice any other differences after the swap?
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Unread 01-15-2010, 01:38 AM   #11
rawk hard xj
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Location: Junction City, Oregon
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I'm rather interested to hear on the testimonials on these injectors, after swapping out my rusty fuel tank and still curing my horrible issues, I'm leaning toward new injectors.
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Unread 01-15-2010, 05:58 AM   #12
cruiser54
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You'll get a testimonial from me as soon as I get them installed. They shipped from Florida on Tuesday evening. Could I be so fortunate to get them by the weekend? It's in the hands of the USPS now..
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Unread 01-15-2010, 09:34 AM   #13
nrpalmer32
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Quote:
Originally Posted by ckisela View Post
Besides the idle fix do you notice any other differences after the swap?
Have you ever installed a MSD Ignition box? To me, it felt about the same.....everything just seems smoother. I installed a MSD Ignition on a Honda Accord and a Bronco II, and the differences to me was that the RPM range seemed smoother, with maybe a bit more "umph". Its not like a header or anything. It should cause better ignition of the gas, some more fuel efficiency, and less leaks (hopefully)

Disclaimer: I am not saying the injectors and a MSD Ignition will give you the exact same results. lol
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Unread 01-15-2010, 09:37 AM   #14
nrpalmer32
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1987 XJ Cherokee 
 
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Quote:
Originally Posted by painjectors View Post
Sure it's an o-ring leaking?

It's very common for them to leak where the metal connector meets the metal portion of the injector body. The o-rings don't leak if you've never taken them out and caused physical damage to them.
Do you have a pic of where you are talking about? I went out to see where you were talking about and I am not quite sure. IIRC it is my #4 injector, or maybe #5.
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Unread 01-15-2010, 10:12 AM   #15
lollygagger8
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painjectors, sent you an email
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